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[clang] Add nuw attribute to GEPs (#105496)
Add nuw attribute to inbounds GEPs where the expression used to form the GEP is an addition of unsigned indices.
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‎clang/lib/CodeGen/CGBuilder.h‎

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -14,6 +14,7 @@
1414
#include "CodeGenTypeCache.h"
1515
#include "llvm/Analysis/Utils/Local.h"
1616
#include "llvm/IR/DataLayout.h"
17+
#include "llvm/IR/GEPNoWrapFlags.h"
1718
#include "llvm/IR/IRBuilder.h"
1819
#include "llvm/IR/Type.h"
1920

@@ -334,9 +335,10 @@ class CGBuilderTy : public CGBuilderBaseTy {
334335

335336
Address CreateGEP(Address Addr, ArrayRef<llvm::Value *> IdxList,
336337
llvm::Type *ElementType, CharUnits Align,
337-
const Twine &Name = "") {
338+
const Twine &Name = "",
339+
llvm::GEPNoWrapFlags NW = llvm::GEPNoWrapFlags::none()) {
338340
llvm::Value *Ptr = emitRawPointerFromAddress(Addr);
339-
return RawAddress(CreateGEP(Addr.getElementType(), Ptr, IdxList, Name),
341+
return RawAddress(CreateGEP(Addr.getElementType(), Ptr, IdxList, Name, NW),
340342
ElementType, Align);
341343
}
342344

‎clang/lib/CodeGen/CGExprScalar.cpp‎

Lines changed: 14 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -36,6 +36,7 @@
3636
#include "llvm/IR/DerivedTypes.h"
3737
#include "llvm/IR/FixedPointBuilder.h"
3838
#include "llvm/IR/Function.h"
39+
#include "llvm/IR/GEPNoWrapFlags.h"
3940
#include "llvm/IR/GetElementPtrTypeIterator.h"
4041
#include "llvm/IR/GlobalVariable.h"
4142
#include "llvm/IR/Intrinsics.h"
@@ -5756,7 +5757,12 @@ CodeGenFunction::EmitCheckedInBoundsGEP(llvm::Type *ElemTy, Value *Ptr,
57565757
bool SignedIndices, bool IsSubtraction,
57575758
SourceLocation Loc, const Twine &Name) {
57585759
llvm::Type *PtrTy = Ptr->getType();
5759-
Value *GEPVal = Builder.CreateInBoundsGEP(ElemTy, Ptr, IdxList, Name);
5760+
5761+
llvm::GEPNoWrapFlags NWFlags = llvm::GEPNoWrapFlags::inBounds();
5762+
if (!SignedIndices && !IsSubtraction)
5763+
NWFlags |= llvm::GEPNoWrapFlags::noUnsignedWrap();
5764+
5765+
Value *GEPVal = Builder.CreateGEP(ElemTy, Ptr, IdxList, Name, NWFlags);
57605766

57615767
// If the pointer overflow sanitizer isn't enabled, do nothing.
57625768
if (!SanOpts.has(SanitizerKind::PointerOverflow))
@@ -5871,8 +5877,13 @@ Address CodeGenFunction::EmitCheckedInBoundsGEP(
58715877
Address Addr, ArrayRef<Value *> IdxList, llvm::Type *elementType,
58725878
bool SignedIndices, bool IsSubtraction, SourceLocation Loc, CharUnits Align,
58735879
const Twine &Name) {
5874-
if (!SanOpts.has(SanitizerKind::PointerOverflow))
5875-
return Builder.CreateInBoundsGEP(Addr, IdxList, elementType, Align, Name);
5880+
if (!SanOpts.has(SanitizerKind::PointerOverflow)) {
5881+
llvm::GEPNoWrapFlags NWFlags = llvm::GEPNoWrapFlags::inBounds();
5882+
if (!SignedIndices && !IsSubtraction)
5883+
NWFlags |= llvm::GEPNoWrapFlags::noUnsignedWrap();
5884+
5885+
return Builder.CreateGEP(Addr, IdxList, elementType, Align, Name, NWFlags);
5886+
}
58765887

58775888
return RawAddress(
58785889
EmitCheckedInBoundsGEP(Addr.getElementType(), Addr.emitRawPointer(*this),

‎clang/test/CodeGen/2005-01-02-ConstantInits.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --check-globals --global-value-regex "@.+"
1+
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --check-globals --global-value-regex "[A-Za-z].*"
22
// RUN: %clang_cc1 -triple=x86_64-unknown-linux %s -emit-llvm -o - | FileCheck %s
33

44
// This tests all kinds of hard cases with initializers and
@@ -51,7 +51,7 @@ int foo(int i) { return bar(&Arr[49])+bar(&Arr[i]); }
5151
// CHECK-NEXT: store i32 [[I]], ptr [[I_ADDR]], align 4
5252
// CHECK-NEXT: store ptr @Arr, ptr [[P]], align 8
5353
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[P]], align 8
54-
// CHECK-NEXT: [[INCDEC_PTR:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i32 1
54+
// CHECK-NEXT: [[INCDEC_PTR:%.*]] = getelementptr inbounds nuw i32, ptr [[TMP0]], i32 1
5555
// CHECK-NEXT: store ptr [[INCDEC_PTR]], ptr [[P]], align 8
5656
// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[I_ADDR]], align 4
5757
// CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[TMP1]] to i64

‎clang/test/CodeGen/PowerPC/ppc-emmintrin.c‎

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -1012,14 +1012,14 @@ test_shuffle() {
10121012
// CHECK: %[[SHR:[0-9a-zA-Z_.]+]] = ashr i32 %{{[0-9a-zA-Z_.]+}}, 6
10131013
// CHECK: %[[AND4:[0-9a-zA-Z_.]+]] = and i32 %[[SHR]], 3
10141014
// CHECK: sext i32 %[[AND4]] to i64
1015-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
1015+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
10161016
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %{{[0-9a-zA-Z_.]+}}, i32 0
1017-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
1017+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
10181018
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %{{[0-9a-zA-Z_.]+}}, i32 1
1019-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
1019+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
10201020
// CHECK: %[[ADD:[0-9a-zA-Z_.]+]] = add i32 %{{[0-9a-zA-Z_.]+}}, 269488144
10211021
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %[[ADD]], i32 2
1022-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
1022+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_epi32.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
10231023
// CHECK: add i32 %{{[0-9a-zA-Z_.]+}}, 269488144
10241024
// CHECK: call <4 x i32> @vec_perm(int vector[4], int vector[4], unsigned char vector[16])
10251025

@@ -1050,7 +1050,7 @@ test_shuffle() {
10501050
// CHECK: sext i32 %[[AND4]] to i64
10511051
// CHECK-LE: store <2 x i64> <i64 1663540288323457296, i64 0>, ptr %{{[0-9a-zA-Z_.]+}}, align 16
10521052
// CHECK-BE: store <2 x i64> <i64 1157726452361532951, i64 0>, ptr %{{[0-9a-zA-Z_.]+}}, align 16
1053-
// CHECK-COUNT-4: getelementptr inbounds [4 x i16], ptr @_mm_shufflehi_epi16.__permute_selectors, i64 0, i64 {{[0-9a-zA-Z_%.]+}}
1053+
// CHECK-COUNT-4: getelementptr inbounds nuw [4 x i16], ptr @_mm_shufflehi_epi16.__permute_selectors, i64 0, i64 {{[0-9a-zA-Z_%.]+}}
10541054
// CHECK: call <2 x i64> @vec_perm(unsigned long long vector[2], unsigned long long vector[2], unsigned char vector[16])
10551055

10561056
// CHECK-LABEL: define available_externally <2 x i64> @_mm_shufflelo_epi16
@@ -1067,7 +1067,7 @@ test_shuffle() {
10671067
// CHECK: sext i32 %[[AND4]] to i64
10681068
// CHECK-LE: store <2 x i64> <i64 0, i64 2242261671028070680>, ptr %{{[0-9a-zA-Z_.]+}}, align 16
10691069
// CHECK-BE: store <2 x i64> <i64 0, i64 1736447835066146335>, ptr %{{[0-9a-zA-Z_.]+}}, align 16
1070-
// CHECK-COUNT-4: getelementptr inbounds [4 x i16], ptr @_mm_shufflelo_epi16.__permute_selectors, i64 0, i64 {{[0-9a-zA-Z_%.]+}}
1070+
// CHECK-COUNT-4: getelementptr inbounds nuw [4 x i16], ptr @_mm_shufflelo_epi16.__permute_selectors, i64 0, i64 {{[0-9a-zA-Z_%.]+}}
10711071
// CHECK: call <2 x i64> @vec_perm(unsigned long long vector[2], unsigned long long vector[2], unsigned char vector[16])
10721072

10731073
void __attribute__((noinline))

‎clang/test/CodeGen/PowerPC/ppc-xmmintrin.c‎

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -894,16 +894,16 @@ test_shuffle() {
894894
// CHECK: %[[SHR3:[0-9a-zA-Z_.]+]] = ashr i32 %{{[0-9a-zA-Z_.]+}}, 6
895895
// CHECK: %[[AND4:[0-9a-zA-Z_.]+]] = and i32 %[[SHR3]], 3
896896
// CHECK: sext i32 %[[AND4]] to i64
897-
// CHECK: getelementptr inbounds [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
897+
// CHECK: getelementptr inbounds nuw [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
898898
// CHECK-LE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 0
899899
// CHECK-BE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 3
900-
// CHECK: getelementptr inbounds [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
900+
// CHECK: getelementptr inbounds nuw [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
901901
// CHECK-LE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 1
902902
// CHECK-BE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 2
903-
// CHECK: getelementptr inbounds [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
903+
// CHECK: getelementptr inbounds nuw [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
904904
// CHECK-LE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 2
905905
// CHECK-BE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 1
906-
// CHECK: getelementptr inbounds [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
906+
// CHECK: getelementptr inbounds nuw [4 x i16], ptr @_mm_shuffle_pi16.__permute_selectors, i64 0, i64 %{{[0-9a-zA-Z_.]+}}
907907
// CHECK-LE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 3
908908
// CHECK-BE: getelementptr inbounds [4 x i16], ptr %{{[0-9a-zA-Z_.]+}}, i64 0, i64 0
909909
// CHECK: call <2 x i64> @vec_splats(unsigned long long)
@@ -923,14 +923,14 @@ test_shuffle() {
923923
// CHECK: %[[SHR3:[0-9a-zA-Z_.]+]] = ashr i32 %{{[0-9a-zA-Z_.]+}}, 6
924924
// CHECK: %[[AND4:[0-9a-zA-Z_.]+]] = and i32 %[[SHR3]], 3
925925
// CHECK: sext i32 %[[AND4]] to i64
926-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
926+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
927927
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %{{[0-9a-zA-Z_.]+}}, i32 0
928-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
928+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
929929
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %{{[0-9a-zA-Z_.]+}}, i32 1
930-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
930+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
931931
// CHECK: %[[ADD:[0-9a-zA-Z_.]+]] = add i32 %{{[0-9a-zA-Z_.]+}}, 269488144
932932
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %[[ADD]], i32 2
933-
// CHECK: getelementptr inbounds [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
933+
// CHECK: getelementptr inbounds nuw [4 x i32], ptr @_mm_shuffle_ps.__permute_selectors, i64 0, i64
934934
// CHECK: %[[ADD2:[0-9a-zA-Z_.]+]] = add i32 %{{[0-9a-zA-Z_.]+}}, 269488144
935935
// CHECK: insertelement <4 x i32> %{{[0-9a-zA-Z_.]+}}, i32 %[[ADD2]], i32 3
936936
// CHECK: call <4 x float> @vec_perm(float vector[4], float vector[4], unsigned char vector[16])

‎clang/test/CodeGen/attr-counted-by.c‎

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -118,7 +118,7 @@ void test1(struct annotated *p, int index, int val) {
118118
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
119119
// SANITIZE-WITH-ATTR: cont3:
120120
// SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
121-
// SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
121+
// SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
122122
// SANITIZE-WITH-ATTR-NEXT: [[TMP2:%.*]] = shl i32 [[DOT_COUNTED_BY_LOAD]], 2
123123
// SANITIZE-WITH-ATTR-NEXT: [[DOTINV:%.*]] = icmp slt i32 [[DOT_COUNTED_BY_LOAD]], 0
124124
// SANITIZE-WITH-ATTR-NEXT: [[CONV:%.*]] = select i1 [[DOTINV]], i32 0, i32 [[TMP2]]
@@ -134,23 +134,23 @@ void test1(struct annotated *p, int index, int val) {
134134
// NO-SANITIZE-WITH-ATTR-NEXT: [[DOTINV:%.*]] = icmp slt i32 [[DOT_COUNTED_BY_LOAD]], 0
135135
// NO-SANITIZE-WITH-ATTR-NEXT: [[CONV:%.*]] = select i1 [[DOTINV]], i32 0, i32 [[TMP0]]
136136
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
137-
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
137+
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
138138
// NO-SANITIZE-WITH-ATTR-NEXT: store i32 [[CONV]], ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
139139
// NO-SANITIZE-WITH-ATTR-NEXT: ret void
140140
//
141141
// SANITIZE-WITHOUT-ATTR-LABEL: define dso_local void @test2(
142142
// SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i64 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR0]] {
143143
// SANITIZE-WITHOUT-ATTR-NEXT: entry:
144144
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
145-
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
145+
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
146146
// SANITIZE-WITHOUT-ATTR-NEXT: store i32 -1, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
147147
// SANITIZE-WITHOUT-ATTR-NEXT: ret void
148148
//
149149
// NO-SANITIZE-WITHOUT-ATTR-LABEL: define dso_local void @test2(
150150
// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i64 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR0]] {
151151
// NO-SANITIZE-WITHOUT-ATTR-NEXT: entry:
152152
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
153-
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
153+
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
154154
// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 -1, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
155155
// NO-SANITIZE-WITHOUT-ATTR-NEXT: ret void
156156
//
@@ -207,7 +207,7 @@ size_t test2_bdos(struct annotated *p) {
207207
// SANITIZE-WITH-ATTR-NEXT: unreachable, !nosanitize [[META2]]
208208
// SANITIZE-WITH-ATTR: cont3:
209209
// SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
210-
// SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
210+
// SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
211211
// SANITIZE-WITH-ATTR-NEXT: [[TMP2:%.*]] = sext i32 [[DOT_COUNTED_BY_LOAD]] to i64
212212
// SANITIZE-WITH-ATTR-NEXT: [[TMP3:%.*]] = shl nsw i64 [[TMP2]], 2
213213
// SANITIZE-WITH-ATTR-NEXT: [[TMP4:%.*]] = tail call i64 @llvm.smax.i64(i64 [[TMP3]], i64 4)
@@ -231,23 +231,23 @@ size_t test2_bdos(struct annotated *p) {
231231
// NO-SANITIZE-WITH-ATTR-NEXT: [[DOTINV:%.*]] = icmp slt i32 [[DOT_COUNTED_BY_LOAD]], 0
232232
// NO-SANITIZE-WITH-ATTR-NEXT: [[CONV:%.*]] = select i1 [[DOTINV]], i32 0, i32 [[TMP4]]
233233
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
234-
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
234+
// NO-SANITIZE-WITH-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
235235
// NO-SANITIZE-WITH-ATTR-NEXT: store i32 [[CONV]], ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
236236
// NO-SANITIZE-WITH-ATTR-NEXT: ret void
237237
//
238238
// SANITIZE-WITHOUT-ATTR-LABEL: define dso_local void @test3(
239239
// SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i64 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR0]] {
240240
// SANITIZE-WITHOUT-ATTR-NEXT: entry:
241241
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
242-
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
242+
// SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
243243
// SANITIZE-WITHOUT-ATTR-NEXT: store i32 -1, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
244244
// SANITIZE-WITHOUT-ATTR-NEXT: ret void
245245
//
246246
// NO-SANITIZE-WITHOUT-ATTR-LABEL: define dso_local void @test3(
247247
// NO-SANITIZE-WITHOUT-ATTR-SAME: ptr noundef [[P:%.*]], i64 noundef [[INDEX:%.*]]) local_unnamed_addr #[[ATTR0]] {
248248
// NO-SANITIZE-WITHOUT-ATTR-NEXT: entry:
249249
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAY:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 12
250-
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
250+
// NO-SANITIZE-WITHOUT-ATTR-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw [0 x i32], ptr [[ARRAY]], i64 0, i64 [[INDEX]]
251251
// NO-SANITIZE-WITHOUT-ATTR-NEXT: store i32 -1, ptr [[ARRAYIDX]], align 4, !tbaa [[TBAA2]]
252252
// NO-SANITIZE-WITHOUT-ATTR-NEXT: ret void
253253
//

‎clang/test/CodeGen/catch-nullptr-and-nonzero-offset-when-nullptr-is-defined.c‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -33,7 +33,7 @@ char *add_unsigned(char *base, unsigned long offset) {
3333
// CHECK-NEXT: store i64 %[[OFFSET]], ptr %[[OFFSET_ADDR]], align 8
3434
// CHECK-NEXT: %[[BASE_RELOADED:.*]] = load ptr, ptr %[[BASE_ADDR]], align 8
3535
// CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, ptr %[[OFFSET_ADDR]], align 8
36-
// CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]]
36+
// CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds nuw i8, ptr %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]]
3737
// CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize
3838
// CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize
3939
// CHECK-SANITIZE-NEXT: %[[OR_OV:.+]] = or i1 %[[COMPUTED_OFFSET_OVERFLOWED]], false, !nosanitize

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