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[AMDGPU] Propagate alias information in AMDGPULowerKernelArguments.#161375

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PeddleSpam merged 12 commits intollvm:mainfrom
PeddleSpam:alias_info
Dec 21, 2025
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[AMDGPU] Propagate alias information in AMDGPULowerKernelArguments.#161375
PeddleSpam merged 12 commits intollvm:mainfrom
PeddleSpam:alias_info

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@PeddleSpam PeddleSpam commented Sep 30, 2025 •
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Emit !noalias and alias.scope metadata for noalias kernel arguments.

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llvmbot commented Sep 30, 2025

@llvm/pr-subscribers-backend-amdgpu

Author: Leon Clark (PeddleSpam)

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Emit !noalias metadata for noalias kernel arguments.

Patch is 50.28 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/161375.diff

1 Files Affected:

  • (added) llvm/test/CodeGen/AMDGPU/lower-noalias-kernargs.ll (+620)
diff --git a/llvm/test/CodeGen/AMDGPU/lower-noalias-kernargs.ll b/llvm/test/CodeGen/AMDGPU/lower-noalias-kernargs.ll
new file mode 100644
index 0000000000000..313ae3b883e56
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/lower-noalias-kernargs.ll
@@ -0,0 +1,620 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
+; RUN: opt -mtriple=amdgcn-- -S -o - -passes=amdgpu-lower-kernel-arguments %s | FileCheck %s
+
+define amdgpu_kernel void @aliasinfo_2i32(ptr addrspace(1) %out, ptr addrspace(1) %in) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_2i32(
+; CHECK-SAME: ptr addrspace(1) [[OUT:%.*]], ptr addrspace(1) [[IN:%.*]]) #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_2I32_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(272) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[OUT_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_2I32_KERNARG_SEGMENT]], i64 36
+; CHECK-NEXT:    [[OUT_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT_KERNARG_OFFSET]], align 4, !invariant.load [[META0:![0-9]+]]
+; CHECK-NEXT:    [[IN_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_2I32_KERNARG_SEGMENT]], i64 44
+; CHECK-NEXT:    [[IN_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[IN_GEP:%.*]] = getelementptr i32, ptr addrspace(1) [[IN_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[IN_GEP]], align 4
+; CHECK-NEXT:    [[CTLZ:%.*]] = call i32 @llvm.ctlz.i32(i32 [[VAL]], i1 false) #[[ATTR5:[0-9]+]]
+; CHECK-NEXT:    store i32 [[CTLZ]], ptr addrspace(1) [[OUT_LOAD]], align 4
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %in.gep = getelementptr i32, ptr addrspace(1) %in, i32 %tid
+  %val = load i32, ptr addrspace(1) %in.gep, align 4
+  %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
+  store i32 %ctlz, ptr addrspace(1) %out, align 4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_2i32_NA(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %in) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_2i32_NA(
+; CHECK-SAME: ptr addrspace(1) noalias [[OUT:%.*]], ptr addrspace(1) noalias [[IN:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_2I32_NA_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(272) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[IN_GEP:%.*]] = getelementptr i32, ptr addrspace(1) [[IN]], i32 [[TID]]
+; CHECK-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[IN_GEP]], align 4
+; CHECK-NEXT:    [[CTLZ:%.*]] = call i32 @llvm.ctlz.i32(i32 [[VAL]], i1 false) #[[ATTR5]]
+; CHECK-NEXT:    store i32 [[CTLZ]], ptr addrspace(1) [[OUT]], align 4
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %in.gep = getelementptr i32, ptr addrspace(1) %in, i32 %tid
+  %val = load i32, ptr addrspace(1) %in.gep, align 4
+  %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
+  store i32 %ctlz, ptr addrspace(1) %out, align 4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_2i32_AS(ptr addrspace(1) %out, ptr addrspace(1) %in) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_2i32_AS(
+; CHECK-SAME: ptr addrspace(1) [[OUT:%.*]], ptr addrspace(1) [[IN:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_2I32_AS_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(272) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[OUT_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_2I32_AS_KERNARG_SEGMENT]], i64 36
+; CHECK-NEXT:    [[OUT_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[IN_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_2I32_AS_KERNARG_SEGMENT]], i64 44
+; CHECK-NEXT:    [[IN_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[IN_GEP:%.*]] = getelementptr i32, ptr addrspace(1) [[IN_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[IN_GEP]], align 4, !alias.scope [[META1:![0-9]+]], !noalias [[META4:![0-9]+]]
+; CHECK-NEXT:    [[CTLZ:%.*]] = call i32 @llvm.ctlz.i32(i32 [[VAL]], i1 false) #[[ATTR5]]
+; CHECK-NEXT:    store i32 [[CTLZ]], ptr addrspace(1) [[OUT_LOAD]], align 4, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %in.gep = getelementptr i32, ptr addrspace(1) %in, i32 %tid
+  %val = load i32, ptr addrspace(1) %in.gep, align 4, !alias.scope !4, !noalias !2
+  %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
+  store i32 %ctlz, ptr addrspace(1) %out, align 4, !alias.scope !2, !noalias !4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_2i32_NA_AS(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %in) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_2i32_NA_AS(
+; CHECK-SAME: ptr addrspace(1) noalias [[OUT:%.*]], ptr addrspace(1) noalias [[IN:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_2I32_NA_AS_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(272) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[IN_GEP:%.*]] = getelementptr i32, ptr addrspace(1) [[IN]], i32 [[TID]]
+; CHECK-NEXT:    [[VAL:%.*]] = load i32, ptr addrspace(1) [[IN_GEP]], align 4, !alias.scope [[META1]], !noalias [[META4]]
+; CHECK-NEXT:    [[CTLZ:%.*]] = call i32 @llvm.ctlz.i32(i32 [[VAL]], i1 false) #[[ATTR5]]
+; CHECK-NEXT:    store i32 [[CTLZ]], ptr addrspace(1) [[OUT]], align 4, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %in.gep = getelementptr i32, ptr addrspace(1) %in, i32 %tid
+  %val = load i32, ptr addrspace(1) %in.gep, align 4, !alias.scope !4, !noalias !2
+  %ctlz = call i32 @llvm.ctlz.i32(i32 %val, i1 false) nounwind readnone
+  store i32 %ctlz, ptr addrspace(1) %out, align 4, !alias.scope !2, !noalias !4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_v4f32_3v4i8(ptr addrspace(1) %out, ptr addrspace(1) %out1, ptr addrspace(1) %in, ptr addrspace(1) %in1) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_v4f32_3v4i8(
+; CHECK-SAME: ptr addrspace(1) [[OUT:%.*]], ptr addrspace(1) [[OUT1:%.*]], ptr addrspace(1) [[IN:%.*]], ptr addrspace(1) [[IN1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_V4F32_3V4I8_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(288) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[OUT_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_KERNARG_SEGMENT]], i64 36
+; CHECK-NEXT:    [[OUT_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[OUT1_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_KERNARG_SEGMENT]], i64 44
+; CHECK-NEXT:    [[OUT1_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT1_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[IN_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_KERNARG_SEGMENT]], i64 52
+; CHECK-NEXT:    [[IN_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[IN1_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_KERNARG_SEGMENT]], i64 60
+; CHECK-NEXT:    [[IN1_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN1_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN1_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[LOAD:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP]], align 1
+; CHECK-NEXT:    [[LOAD1:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP1]], align 1
+; CHECK-NEXT:    [[SHUFFLE0_0:%.*]] = shufflevector <4 x i8> [[LOAD]], <4 x i8> [[LOAD1]], <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+; CHECK-NEXT:    [[CVT:%.*]] = uitofp <4 x i8> [[SHUFFLE0_0]] to <4 x float>
+; CHECK-NEXT:    store <4 x float> [[CVT]], ptr addrspace(1) [[OUT_LOAD]], align 16
+; CHECK-NEXT:    store <4 x i8> [[SHUFFLE0_0]], ptr addrspace(1) [[OUT1_LOAD]], align 4
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr <4 x i8>, ptr addrspace(1) %in, i32 %tid
+  %gep1 = getelementptr <4 x i8>, ptr addrspace(1) %in1, i32 %tid
+  %load = load <4 x i8>, ptr addrspace(1) %gep, align 1
+  %load1 = load <4 x i8>, ptr addrspace(1) %gep1, align 1
+  %shuffle0_0 = shufflevector <4 x i8> %load, <4 x i8> %load1, <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+  %cvt = uitofp <4 x i8> %shuffle0_0 to <4 x float>
+  store <4 x float> %cvt, ptr addrspace(1) %out, align 16
+  store <4 x i8> %shuffle0_0, ptr addrspace(1) %out1, align 4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_NA(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %out1, ptr addrspace(1) noalias %in, ptr addrspace(1) noalias %in1) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_NA(
+; CHECK-SAME: ptr addrspace(1) noalias [[OUT:%.*]], ptr addrspace(1) noalias [[OUT1:%.*]], ptr addrspace(1) noalias [[IN:%.*]], ptr addrspace(1) noalias [[IN1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_V4F32_3V4I8_NA_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(288) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN]], i32 [[TID]]
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN1]], i32 [[TID]]
+; CHECK-NEXT:    [[LOAD:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP]], align 1
+; CHECK-NEXT:    [[LOAD1:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP1]], align 1
+; CHECK-NEXT:    [[SHUFFLE0_0:%.*]] = shufflevector <4 x i8> [[LOAD]], <4 x i8> [[LOAD1]], <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+; CHECK-NEXT:    [[CVT:%.*]] = uitofp <4 x i8> [[SHUFFLE0_0]] to <4 x float>
+; CHECK-NEXT:    store <4 x float> [[CVT]], ptr addrspace(1) [[OUT]], align 16
+; CHECK-NEXT:    store <4 x i8> [[SHUFFLE0_0]], ptr addrspace(1) [[OUT1]], align 4
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr <4 x i8>, ptr addrspace(1) %in, i32 %tid
+  %gep1 = getelementptr <4 x i8>, ptr addrspace(1) %in1, i32 %tid
+  %load = load <4 x i8>, ptr addrspace(1) %gep, align 1
+  %load1 = load <4 x i8>, ptr addrspace(1) %gep1, align 1
+  %shuffle0_0 = shufflevector <4 x i8> %load, <4 x i8> %load1, <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+  %cvt = uitofp <4 x i8> %shuffle0_0 to <4 x float>
+  store <4 x float> %cvt, ptr addrspace(1) %out, align 16
+  store <4 x i8> %shuffle0_0, ptr addrspace(1) %out1, align 4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_AS(ptr addrspace(1) %out, ptr addrspace(1) %out1, ptr addrspace(1) %in, ptr addrspace(1) %in1) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_AS(
+; CHECK-SAME: ptr addrspace(1) [[OUT:%.*]], ptr addrspace(1) [[OUT1:%.*]], ptr addrspace(1) [[IN:%.*]], ptr addrspace(1) [[IN1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_V4F32_3V4I8_AS_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(288) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[OUT_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_AS_KERNARG_SEGMENT]], i64 36
+; CHECK-NEXT:    [[OUT_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[OUT1_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_AS_KERNARG_SEGMENT]], i64 44
+; CHECK-NEXT:    [[OUT1_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[OUT1_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[IN_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_AS_KERNARG_SEGMENT]], i64 52
+; CHECK-NEXT:    [[IN_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[IN1_KERNARG_OFFSET:%.*]] = getelementptr inbounds i8, ptr addrspace(4) [[ALIASINFO_V4F32_3V4I8_AS_KERNARG_SEGMENT]], i64 60
+; CHECK-NEXT:    [[IN1_LOAD:%.*]] = load ptr addrspace(1), ptr addrspace(4) [[IN1_KERNARG_OFFSET]], align 4, !invariant.load [[META0]]
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN1_LOAD]], i32 [[TID]]
+; CHECK-NEXT:    [[LOAD:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP]], align 1, !alias.scope [[META1]], !noalias [[META4]]
+; CHECK-NEXT:    [[LOAD1:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP1]], align 1, !alias.scope [[META1]], !noalias [[META4]]
+; CHECK-NEXT:    [[SHUFFLE0_0:%.*]] = shufflevector <4 x i8> [[LOAD]], <4 x i8> [[LOAD1]], <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+; CHECK-NEXT:    [[CVT:%.*]] = uitofp <4 x i8> [[SHUFFLE0_0]] to <4 x float>
+; CHECK-NEXT:    store <4 x float> [[CVT]], ptr addrspace(1) [[OUT_LOAD]], align 16, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    store <4 x i8> [[SHUFFLE0_0]], ptr addrspace(1) [[OUT1_LOAD]], align 4, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr <4 x i8>, ptr addrspace(1) %in, i32 %tid
+  %gep1 = getelementptr <4 x i8>, ptr addrspace(1) %in1, i32 %tid
+  %load = load <4 x i8>, ptr addrspace(1) %gep, align 1, !alias.scope !4, !noalias !2
+  %load1 = load <4 x i8>, ptr addrspace(1) %gep1, align 1, !alias.scope !4, !noalias !2
+  %shuffle0_0 = shufflevector <4 x i8> %load, <4 x i8> %load1, <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+  %cvt = uitofp <4 x i8> %shuffle0_0 to <4 x float>
+  store <4 x float> %cvt, ptr addrspace(1) %out, align 16, !alias.scope !2, !noalias !4
+  store <4 x i8> %shuffle0_0, ptr addrspace(1) %out1, align 4, !alias.scope !2, !noalias !4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_NA_AS(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %out1, ptr addrspace(1) noalias %in, ptr addrspace(1) noalias %in1) nounwind {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_v4f32_3v4i8_NA_AS(
+; CHECK-SAME: ptr addrspace(1) noalias [[OUT:%.*]], ptr addrspace(1) noalias [[OUT1:%.*]], ptr addrspace(1) noalias [[IN:%.*]], ptr addrspace(1) noalias [[IN1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_V4F32_3V4I8_NA_AS_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(288) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[TID:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN]], i32 [[TID]]
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr <4 x i8>, ptr addrspace(1) [[IN1]], i32 [[TID]]
+; CHECK-NEXT:    [[LOAD:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP]], align 1, !alias.scope [[META1]], !noalias [[META4]]
+; CHECK-NEXT:    [[LOAD1:%.*]] = load <4 x i8>, ptr addrspace(1) [[GEP1]], align 1, !alias.scope [[META1]], !noalias [[META4]]
+; CHECK-NEXT:    [[SHUFFLE0_0:%.*]] = shufflevector <4 x i8> [[LOAD]], <4 x i8> [[LOAD1]], <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+; CHECK-NEXT:    [[CVT:%.*]] = uitofp <4 x i8> [[SHUFFLE0_0]] to <4 x float>
+; CHECK-NEXT:    store <4 x float> [[CVT]], ptr addrspace(1) [[OUT]], align 16, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    store <4 x i8> [[SHUFFLE0_0]], ptr addrspace(1) [[OUT1]], align 4, !alias.scope [[META4]], !noalias [[META1]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr <4 x i8>, ptr addrspace(1) %in, i32 %tid
+  %gep1 = getelementptr <4 x i8>, ptr addrspace(1) %in1, i32 %tid
+  %load = load <4 x i8>, ptr addrspace(1) %gep, align 1, !alias.scope !4, !noalias !2
+  %load1 = load <4 x i8>, ptr addrspace(1) %gep1, align 1, !alias.scope !4, !noalias !2
+  %shuffle0_0 = shufflevector <4 x i8> %load, <4 x i8> %load1, <4 x i32> <i32 3, i32 2, i32 6, i32 2>
+  %cvt = uitofp <4 x i8> %shuffle0_0 to <4 x float>
+  store <4 x float> %cvt, ptr addrspace(1) %out, align 16, !alias.scope !2, !noalias !4
+  store <4 x i8> %shuffle0_0, ptr addrspace(1) %out1, align 4, !alias.scope !2, !noalias !4
+  ret void
+}
+
+define amdgpu_kernel void @aliasinfo_10v16f16(ptr addrspace(3) %in, ptr addrspace(3) %out) #0 {
+; CHECK-LABEL: define amdgpu_kernel void @aliasinfo_10v16f16(
+; CHECK-SAME: ptr addrspace(3) [[IN:%.*]], ptr addrspace(3) [[OUT:%.*]]) #[[ATTR1:[0-9]+]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[ALIASINFO_10V16F16_KERNARG_SEGMENT:%.*]] = call nonnull align 16 dereferenceable(264) ptr addrspace(4) @llvm.amdgcn.kernarg.segment.ptr()
+; CHECK-NEXT:    [[IDX:%.*]] = call i32 @llvm.amdgcn.workitem.id.x()
+; CHECK-NEXT:    [[LOAD_0_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[IN]], i32 [[IDX]]
+; CHECK-NEXT:    [[LOAD_0:%.*]] = load <16 x half>, ptr addrspace(3) [[LOAD_0_ADDR]], align 32
+; CHECK-NEXT:    [[LOAD_1_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[LOAD_0_ADDR]], i32 64
+; CHECK-NEXT:    [[LOAD_1:%.*]] = load <16 x half>, ptr addrspace(3) [[LOAD_1_ADDR]], align 32
+; CHECK-NEXT:    [[LOAD_2_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[LOAD_1_ADDR]], i32 128
+; CHECK-NEXT:    [[LOAD_2:%.*]] = load <16 x half>, ptr addrspace(3) [[LOAD_2_ADDR]], align 32
+; CHECK-NEXT:    [[LOAD_3_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[LOAD_2_ADDR]], i32 192
+; CHECK-NEXT:    [[LOAD_3:%.*]] = load <16 x half>, ptr addrspace(3) [[LOAD_3_ADDR]], align 32
+; CHECK-NEXT:    [[LOAD_4_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[LOAD_3_ADDR]], i32 256
+; CHECK-NEXT:    [[LOAD_4:%.*]] = load <16 x half>, ptr addrspace(3) [[LOAD_4_ADDR]], align 32
+; CHECK-NEXT:    [[MAI_0:%.*]] = call <16 x half> @llvm.amdgcn.wmma.f16.16x16x16.f16.v16f16.v16f16(<16 x half> [[LOAD_0]], <16 x half> [[LOAD_0]], <16 x half> [[LOAD_0]], i1 false)
+; CHECK-NEXT:    [[MAI_1:%.*]] = call <16 x half> @llvm.amdgcn.wmma.f16.16x16x16.f16.v16f16.v16f16(<16 x half> [[LOAD_1]], <16 x half> [[LOAD_1]], <16 x half> [[LOAD_1]], i1 false)
+; CHECK-NEXT:    [[MAI_2:%.*]] = call <16 x half> @llvm.amdgcn.wmma.f16.16x16x16.f16.v16f16.v16f16(<16 x half> [[LOAD_2]], <16 x half> [[LOAD_2]], <16 x half> [[LOAD_2]], i1 false)
+; CHECK-NEXT:    [[MAI_3:%.*]] = call <16 x half> @llvm.amdgcn.wmma.f16.16x16x16.f16.v16f16.v16f16(<16 x half> [[LOAD_3]], <16 x half> [[LOAD_3]], <16 x half> [[LOAD_3]], i1 false)
+; CHECK-NEXT:    [[MAI_4:%.*]] = call <16 x half> @llvm.amdgcn.wmma.f16.16x16x16.f16.v16f16.v16f16(<16 x half> [[LOAD_4]], <16 x half> [[LOAD_4]], <16 x half> [[LOAD_4]], i1 false)
+; CHECK-NEXT:    [[STORE_0_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[OUT]], i32 [[IDX]]
+; CHECK-NEXT:    store <16 x half> [[MAI_0]], ptr addrspace(3) [[STORE_0_ADDR]], align 32
+; CHECK-NEXT:    [[STORE_1_ADDR:%.*]] = getelementptr <16 x half>, ptr addrspace(3) [[OUT]], i32 64
+; CHECK-NEXT:    store <16 x half> [[MAI_1]], ptr addrspace(3) [[STORE_1_ADDR]], align ...
[truncated]

arsenm
arsenm requested changes Oct 10, 2025
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Is this supposed to just be a baseline test? The title sounds like it should be the actual change, but that's missing?

@PeddleSpam PeddleSpam mentioned this pull request Nov 20, 2025
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PeddleSpam added a commit that referenced this pull request Nov 24, 2025
@PeddleSpam
[AMDGPU] Propagate AA info in vector load/store splitting. (#168871)
ee4f647 
Fixes a bug in `AMDGPUISelLowering` where alias analysis info is not
propagated to split loads and stores.

This is required for #161375

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
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✅ With the latest revision this PR passed the C/C++ code formatter.

arsenm
arsenm reviewed Nov 24, 2025
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aadeshps-mcw pushed a commit to aadeshps-mcw/llvm-project that referenced this pull request Nov 26, 2025
@PeddleSpam @aadeshps-mcw
[AMDGPU] Propagate AA info in vector load/store splitting. (llvm#168871)
2aea285 
Fixes a bug in `AMDGPUISelLowering` where alias analysis info is not
propagated to split loads and stores.

This is required for llvm#161375

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
Priyanshu3820 pushed a commit to Priyanshu3820/llvm-project that referenced this pull request Nov 26, 2025
@PeddleSpam @Priyanshu3820
[AMDGPU] Propagate AA info in vector load/store splitting. (llvm#168871)
4fd84c5 
Fixes a bug in `AMDGPUISelLowering` where alias analysis info is not
propagated to split loads and stores.

This is required for llvm#161375

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
@PeddleSpam PeddleSpam requested a review from arsenm November 27, 2025 04:28
augusto2112 pushed a commit to augusto2112/llvm-project that referenced this pull request Dec 3, 2025
@PeddleSpam @augusto2112
[AMDGPU] Propagate AA info in vector load/store splitting. (llvm#168871)
7f8febf 
Fixes a bug in `AMDGPUISelLowering` where alias analysis info is not
propagated to split loads and stores.

This is required for llvm#161375

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
arsenm
arsenm reviewed Dec 8, 2025
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@PeddleSpam PeddleSpam mentioned this pull request Dec 17, 2025
Closed
@PeddleSpam PeddleSpam requested a review from arsenm December 18, 2025 15:44
@PeddleSpam PeddleSpam merged commit 9f4f13a into llvm:main Dec 21, 2025
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llvm-ci commented Dec 21, 2025

LLVM Buildbot has detected a new failure on builder sanitizer-aarch64-linux-bootstrap-ubsan running on sanitizer-buildbot9 while building llvm at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/85/builds/16928

Here is the relevant piece of the build log for the reference 
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 93499 tests, 72 workers --
Testing:  0.. 10.. 20.. 30
FAIL: LLVM :: CodeGen/AMDGPU/lower-kernargs.ll (32785 of 93499)
******************** TEST 'LLVM :: CodeGen/AMDGPU/lower-kernargs.ll' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll | /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck -check-prefixes=GCN,HSA /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# | 1.	Running pass "function(amdgpu-lower-kernel-arguments)" on module "/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll"
# | 2.	Running pass "amdgpu-lower-kernel-arguments" on function "kern_noargs"
# |  #0 0x0000c57a10fdef2c llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:842:13
# |  #1 0x0000c57a10fdbe30 __cxx_atomic_store<CallbackAndCookie::Status> /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/libcxx_install_ubsan/include/c++/v1/__atomic/support/c11.h:68:3
# |  #2 0x0000c57a10fdbe30 store /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/libcxx_install_ubsan/include/c++/v1/__atomic/atomic.h:63:5
# |  #3 0x0000c57a10fdbe30 llvm::sys::RunSignalHandlers() /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Signals.cpp:110:16
# |  #4 0x0000c57a10fe0a08 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:429:38
# |  #5 0x0000fec7e6df59c0 (linux-vdso.so.1+0x9c0)
# |  #6 0x0000fec7e67ba460 (/lib/aarch64-linux-gnu/libc.so.6+0x8a460)
# |  #7 0x0000fec7e67676c0 raise (/lib/aarch64-linux-gnu/libc.so.6+0x376c0)
# |  #8 0x0000fec7e6751ac8 abort (/lib/aarch64-linux-gnu/libc.so.6+0x21ac8)
# |  #9 0x0000c57a10f4b008 __sanitizer::Atexit(void (*)()) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp:170:10
# | #10 0x0000c57a10f48eb0 __sanitizer::Die() /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #11 0x0000c57a10f5a6b4 __ubsan_handle_alignment_assumption /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/ubsan/ubsan_handlers.cpp:195:0
# | #12 0x0000c57a1428427c llvm::AMDGPULowerKernelArgumentsPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Target/AMDGPU/AMDGPULowerKernelArguments.cpp:0:0
# | #13 0x0000c57a112cfec4 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #14 0x0000c57a112d5cc4 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:132:23
# | #15 0x0000c57a112ceeb4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #16 0x0000c57a12c01e5c isSmall /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:248:33
# | #17 0x0000c57a12c01e5c ~SmallPtrSetImplBase /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:89:10
# | #18 0x0000c57a12c01e5c ~PreservedAnalyses /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/Analysis.h:112:7
# | #19 0x0000c57a12c01e5c llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:574:3
# | #20 0x0000c57a10f63d64 optMain /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:758:9
# | #21 0x0000fec7e67522dc (/lib/aarch64-linux-gnu/libc.so.6+0x222dc)
# | #22 0x0000fec7e67523bc __libc_start_main (/lib/aarch64-linux-gnu/libc.so.6+0x223bc)
# | #23 0x0000c57a10f33e30 _start (/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x7a83e30)
Step 11 (stage2/ubsan check) failure: stage2/ubsan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 93499 tests, 72 workers --
Testing:  0.. 10.. 20.. 30
FAIL: LLVM :: CodeGen/AMDGPU/lower-kernargs.ll (32785 of 93499)
******************** TEST 'LLVM :: CodeGen/AMDGPU/lower-kernargs.ll' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll | /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck -check-prefixes=GCN,HSA /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# | 1.	Running pass "function(amdgpu-lower-kernel-arguments)" on module "/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll"
# | 2.	Running pass "amdgpu-lower-kernel-arguments" on function "kern_noargs"
# |  #0 0x0000c57a10fdef2c llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:842:13
# |  #1 0x0000c57a10fdbe30 __cxx_atomic_store<CallbackAndCookie::Status> /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/libcxx_install_ubsan/include/c++/v1/__atomic/support/c11.h:68:3
# |  #2 0x0000c57a10fdbe30 store /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/libcxx_install_ubsan/include/c++/v1/__atomic/atomic.h:63:5
# |  #3 0x0000c57a10fdbe30 llvm::sys::RunSignalHandlers() /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Signals.cpp:110:16
# |  #4 0x0000c57a10fe0a08 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:429:38
# |  #5 0x0000fec7e6df59c0 (linux-vdso.so.1+0x9c0)
# |  #6 0x0000fec7e67ba460 (/lib/aarch64-linux-gnu/libc.so.6+0x8a460)
# |  #7 0x0000fec7e67676c0 raise (/lib/aarch64-linux-gnu/libc.so.6+0x376c0)
# |  #8 0x0000fec7e6751ac8 abort (/lib/aarch64-linux-gnu/libc.so.6+0x21ac8)
# |  #9 0x0000c57a10f4b008 __sanitizer::Atexit(void (*)()) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp:170:10
# | #10 0x0000c57a10f48eb0 __sanitizer::Die() /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #11 0x0000c57a10f5a6b4 __ubsan_handle_alignment_assumption /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/ubsan/ubsan_handlers.cpp:195:0
# | #12 0x0000c57a1428427c llvm::AMDGPULowerKernelArgumentsPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Target/AMDGPU/AMDGPULowerKernelArguments.cpp:0:0
# | #13 0x0000c57a112cfec4 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #14 0x0000c57a112d5cc4 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:132:23
# | #15 0x0000c57a112ceeb4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #16 0x0000c57a12c01e5c isSmall /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:248:33
# | #17 0x0000c57a12c01e5c ~SmallPtrSetImplBase /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:89:10
# | #18 0x0000c57a12c01e5c ~PreservedAnalyses /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/Analysis.h:112:7
# | #19 0x0000c57a12c01e5c llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:574:3
# | #20 0x0000c57a10f63d64 optMain /home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:758:9
# | #21 0x0000fec7e67522dc (/lib/aarch64-linux-gnu/libc.so.6+0x222dc)
# | #22 0x0000fec7e67523bc __libc_start_main (/lib/aarch64-linux-gnu/libc.so.6+0x223bc)
# | #23 0x0000c57a10f33e30 _start (/home/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x7a83e30)

@llvm-ci
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llvm-ci commented Dec 21, 2025

LLVM Buildbot has detected a new failure on builder sanitizer-x86_64-linux-bootstrap-ubsan running on sanitizer-buildbot4 while building llvm at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/25/builds/14230

Here is the relevant piece of the build log for the reference 
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 94794 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.
FAIL: LLVM :: CodeGen/AMDGPU/lower-kernargs.ll (34237 of 94794)
******************** TEST 'LLVM :: CodeGen/AMDGPU/lower-kernargs.ll' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck -check-prefixes=GCN,HSA /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# executed command: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# | 1.	Running pass "function(amdgpu-lower-kernel-arguments)" on module "/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll"
# | 2.	Running pass "amdgpu-lower-kernel-arguments" on function "kern_noargs"
# |  #0 0x00005a1404da319e llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:842:13
# |  #1 0x00005a1404d9fc3f llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Signals.cpp:109:18
# |  #2 0x00005a1404da4bb8 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:429:38
# |  #3 0x0000743dfcc458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #4 0x0000743dfcca49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #5 0x0000743dfcc4579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #6 0x0000743dfcc288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# |  #7 0x00005a1404d0b60c (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x798160c)
# |  #8 0x00005a1404d0949e __sanitizer::Die() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# |  #9 0x00005a1404d1b629 (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x7991629)
# | #10 0x00005a14083440f3 llvm::AMDGPULowerKernelArgumentsPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Target/AMDGPU/AMDGPULowerKernelArguments.cpp:0:0
# | #11 0x00005a140509e850 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #12 0x00005a14050a48b1 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:132:23
# | #13 0x00005a140509d690 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #14 0x00005a1406b0b796 isSmall /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:248:33
# | #15 0x00005a1406b0b796 ~SmallPtrSetImplBase /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:89:10
# | #16 0x00005a1406b0b796 ~PreservedAnalyses /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/Analysis.h:112:7
# | #17 0x00005a1406b0b796 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:574:3
# | #18 0x00005a1404d26bdc optMain /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:0:10
# | #19 0x0000743dfcc2a578 (/lib/x86_64-linux-gnu/libc.so.6+0x2a578)
# | #20 0x0000743dfcc2a63b __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a63b)
# | #21 0x00005a1404cf38e5 _start (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x79698e5)
# `-----------------------------
# error: command failed with exit status: -6
Step 11 (stage2/ubsan check) failure: stage2/ubsan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:564: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 94794 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.
FAIL: LLVM :: CodeGen/AMDGPU/lower-kernargs.ll (34237 of 94794)
******************** TEST 'LLVM :: CodeGen/AMDGPU/lower-kernargs.ll' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck -check-prefixes=GCN,HSA /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# executed command: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -mtriple=amdgcn-amd-amdhsa -S -o - -passes=amdgpu-lower-kernel-arguments /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll
# | 1.	Running pass "function(amdgpu-lower-kernel-arguments)" on module "/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/CodeGen/AMDGPU/lower-kernargs.ll"
# | 2.	Running pass "amdgpu-lower-kernel-arguments" on function "kern_noargs"
# |  #0 0x00005a1404da319e llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:842:13
# |  #1 0x00005a1404d9fc3f llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Signals.cpp:109:18
# |  #2 0x00005a1404da4bb8 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:429:38
# |  #3 0x0000743dfcc458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #4 0x0000743dfcca49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #5 0x0000743dfcc4579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #6 0x0000743dfcc288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# |  #7 0x00005a1404d0b60c (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x798160c)
# |  #8 0x00005a1404d0949e __sanitizer::Die() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# |  #9 0x00005a1404d1b629 (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x7991629)
# | #10 0x00005a14083440f3 llvm::AMDGPULowerKernelArgumentsPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Target/AMDGPU/AMDGPULowerKernelArguments.cpp:0:0
# | #11 0x00005a140509e850 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #12 0x00005a14050a48b1 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:132:23
# | #13 0x00005a140509d690 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:80:8
# | #14 0x00005a1406b0b796 isSmall /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:248:33
# | #15 0x00005a1406b0b796 ~SmallPtrSetImplBase /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:89:10
# | #16 0x00005a1406b0b796 ~PreservedAnalyses /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/Analysis.h:112:7
# | #17 0x00005a1406b0b796 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:574:3
# | #18 0x00005a1404d26bdc optMain /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:0:10
# | #19 0x0000743dfcc2a578 (/lib/x86_64-linux-gnu/libc.so.6+0x2a578)
# | #20 0x0000743dfcc2a63b __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a63b)
# | #21 0x00005a1404cf38e5 _start (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x79698e5)
# `-----------------------------
# error: command failed with exit status: -6

@nikic nikic mentioned this pull request Dec 22, 2025
Closed
nikic added a commit that referenced this pull request Dec 22, 2025
@nikic
Revert "[AMDGPU] Propagate alias information in AMDGPULowerKernelArgu…
1d61ced 
…ments. (#161375)"

This reverts commit 9f4f13a.

Broke sanitizer buildbots, and causes test hangs in release builds.
@nikic
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nikic commented Dec 22, 2025

Reverted in 1d61ced, as it breaks the sanitizer buildbots, see above. We've also seen test hangs downstream, presumably for the same reason.

@aemerson
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aemerson commented Dec 22, 2025

Reverted in 1d61ced, as it breaks the sanitizer buildbots, see above. We've also seen test hangs downstream, presumably for the same reason.

Thanks, I was literally just about to write the same thing about https://green.lab.llvm.org

valadaptive pushed a commit to valadaptive/llvm-project that referenced this pull request Dec 24, 2025
@PeddleSpam @valadaptive
[AMDGPU] Propagate alias information in AMDGPULowerKernelArguments. (l…
cd4cca7 
…lvm#161375)

Emit `!noalias` and `alias.scope` metadata for `noalias` kernel
arguments.

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
valadaptive pushed a commit to valadaptive/llvm-project that referenced this pull request Dec 24, 2025
@nikic @valadaptive
Revert "[AMDGPU] Propagate alias information in AMDGPULowerKernelArgu…
9c37e93 
…ments. (llvm#161375)"

This reverts commit 9f4f13a.

Broke sanitizer buildbots, and causes test hangs in release builds.
@llvm-ci
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llvm-ci commented Jan 2, 2026

LLVM Buildbot has detected a new failure on builder cross-project-tests-sie-ubuntu-dwarf5 running on doug-worker-1b while building llvm at step 2 "checkout".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/163/builds/31888

Here is the relevant piece of the build log for the reference 
Step 2 (checkout) failure: update (failure)
...
remote: Counting objects:  49% (34/69)        
remote: Counting objects:  50% (35/69)        
remote: Counting objects:  52% (36/69)        
remote: Counting objects:  53% (37/69)        
remote: Counting objects:  55% (38/69)        
remote: Counting objects:  56% (39/69)        
remote: Counting objects:  57% (40/69)        
remote: Counting objects:  59% (41/69)        
remote: Counting objects:  60% (42/69)        
remote: Counting objects:  62% (43/69)        
remote: Counting objects:  63% (44/69)        
remote: Counting objects:  65% (45/69)        
remote: Counting objects:  66% (46/69)        
remote: Counting objects:  68% (47/69)        
remote: Counting objects:  69% (48/69)        
remote: Counting objects:  71% (49/69)        
remote: Counting objects:  72% (50/69)        
remote: Counting objects:  73% (51/69)        
remote: Counting objects:  75% (52/69)        
remote: Counting objects:  76% (53/69)        
remote: Counting objects:  78% (54/69)        
remote: Counting objects:  79% (55/69)        
remote: Counting objects:  81% (56/69)        
remote: Counting objects:  82% (57/69)        
remote: Counting objects:  84% (58/69)        
remote: Counting objects:  85% (59/69)        
remote: Counting objects:  86% (60/69)        
remote: Counting objects:  88% (61/69)        
remote: Counting objects:  89% (62/69)        
remote: Counting objects:  91% (63/69)        
remote: Counting objects:  92% (64/69)        
remote: Counting objects:  94% (65/69)        
remote: Counting objects:  95% (66/69)        
remote: Counting objects:  97% (67/69)        
remote: Counting objects:  98% (68/69)        
remote: Counting objects: 100% (69/69)        
remote: Counting objects: 100% (69/69), done.        
remote: Compressing objects:  12% (1/8)        
remote: Compressing objects:  25% (2/8)        
remote: Compressing objects:  37% (3/8)        
remote: Compressing objects:  50% (4/8)        
remote: Compressing objects:  62% (5/8)        
remote: Compressing objects:  75% (6/8)        
remote: Compressing objects:  87% (7/8)        
remote: Compressing objects: 100% (8/8)        
remote: Compressing objects: 100% (8/8), done.        
remote: Total 11 (delta 9), reused 4 (delta 3), pack-reused 0 (from 0)        
From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
fatal: reference is not a tree: 9f4f13a793b53adef37dfb63c4e30dccfa98517b

mahesh-attarde pushed a commit to mahesh-attarde/llvm-project that referenced this pull request Jan 6, 2026
@PeddleSpam @mahesh-attarde
[AMDGPU] Propagate alias information in AMDGPULowerKernelArguments. (l…
d929807 
…lvm#161375)

Emit `!noalias` and `alias.scope` metadata for `noalias` kernel
arguments.

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
mahesh-attarde pushed a commit to mahesh-attarde/llvm-project that referenced this pull request Jan 6, 2026
@nikic @mahesh-attarde
Revert "[AMDGPU] Propagate alias information in AMDGPULowerKernelArgu…
7cadf38 
…ments. (llvm#161375)"

This reverts commit 9f4f13a.

Broke sanitizer buildbots, and causes test hangs in release builds.
@PeddleSpam PeddleSpam mentioned this pull request Jan 8, 2026
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PeddleSpam commented Jan 14, 2026

Reverted in 1d61ced, as it breaks the sanitizer buildbots, see above. We've also seen test hangs downstream, presumably for the same reason.

Thanks for reverting this @nikic 🙏
Would you mind taking a look at #174977?

PeddleSpam added a commit that referenced this pull request Jan 20, 2026
@PeddleSpam
Reapply "[AMDGPU] Propagate alias information in AMDGPULowerKernelArg…
bd9668d 
…uments." (#174977)

Emit `!noalias` and `!alias.scope` metadata for `noalias` kernel
arguments.

Fixes sanitizer issues in #161375.

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
BStott6 pushed a commit to BStott6/llvm-project that referenced this pull request Jan 22, 2026
@PeddleSpam @BStott6
Reapply "[AMDGPU] Propagate alias information in AMDGPULowerKernelArg…
aec452d 
…uments." (llvm#174977)

Emit `!noalias` and `!alias.scope` metadata for `noalias` kernel
arguments.

Fixes sanitizer issues in llvm#161375.

---------

Co-authored-by: Leon Clark <leoclark@amd.com>
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@arsenm arsenm arsenm approved these changes

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