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[PowerPC] Update chain uses when emitting lxsizx #84892

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merged 2 commits into from
Mar 18, 2024
Merged

[PowerPC] Update chain uses when emitting lxsizx #84892

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30788cf
[PowerPC] Update chain uses when emitting lxsizx
ecnelises Mar 12, 2024
6cd2b9a
fixup! [PowerPC] Update chain uses when emitting lxsizx
ecnelises Mar 13, 2024
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1 change: 1 addition & 0 deletions llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15024,6 +15024,7 @@ SDValue PPCTargetLowering::combineFPToIntToFP(SDNode *N,
SDValue Ld = DAG.getMemIntrinsicNode(PPCISD::LXSIZX, dl,
DAG.getVTList(MVT::f64, MVT::Other),
Ops, MVT::i8, LDN->getMemOperand());
DAG.makeEquivalentMemoryOrdering(LDN, Ld);

// For signed conversion, we need to sign-extend the value in the VSR
if (Signed) {
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58 changes: 58 additions & 0 deletions llvm/test/CodeGen/PowerPC/scalar-double-ldst.ll
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Expand Up @@ -7281,3 +7281,61 @@ entry:
store double %str, ptr inttoptr (i64 1000000000000 to ptr), align 4096
ret void
}

define dso_local void @st_reversed_double_from_i8(ptr %ptr) {
; CHECK-P10-LABEL: st_reversed_double_from_i8:
; CHECK-P10: # %bb.0: # %entry
; CHECK-P10-NEXT: li r4, 8
; CHECK-P10-NEXT: lxsibzx f0, 0, r3
; CHECK-P10-NEXT: xxspltidp vs2, -1023410176
; CHECK-P10-NEXT: lxsibzx f1, r3, r4
; CHECK-P10-NEXT: xscvuxddp f0, f0
; CHECK-P10-NEXT: xscvuxddp f1, f1
; CHECK-P10-NEXT: xsadddp f0, f0, f2
; CHECK-P10-NEXT: xsadddp f1, f1, f2
; CHECK-P10-NEXT: stfd f1, 0(r3)
; CHECK-P10-NEXT: stfd f0, 8(r3)
; CHECK-P10-NEXT: blr
;
; CHECK-P9-LABEL: st_reversed_double_from_i8:
; CHECK-P9: # %bb.0: # %entry
; CHECK-P9-NEXT: li r4, 8
; CHECK-P9-NEXT: lxsibzx f0, 0, r3
; CHECK-P9-NEXT: lxsibzx f1, r3, r4
; CHECK-P9-NEXT: addis r4, r2, .LCPI300_0@toc@ha
; CHECK-P9-NEXT: lfs f2, .LCPI300_0@toc@l(r4)
; CHECK-P9-NEXT: xscvuxddp f0, f0
; CHECK-P9-NEXT: xscvuxddp f1, f1
; CHECK-P9-NEXT: xsadddp f0, f0, f2
; CHECK-P9-NEXT: xsadddp f1, f1, f2
; CHECK-P9-NEXT: stfd f0, 8(r3)
; CHECK-P9-NEXT: stfd f1, 0(r3)
; CHECK-P9-NEXT: blr
;
; CHECK-P8-LABEL: st_reversed_double_from_i8:
; CHECK-P8: # %bb.0: # %entry
; CHECK-P8-NEXT: lbz r4, 0(r3)
; CHECK-P8-NEXT: lbz r5, 8(r3)
; CHECK-P8-NEXT: mtfprwz f0, r4
; CHECK-P8-NEXT: mtfprwz f1, r5
; CHECK-P8-NEXT: addis r4, r2, .LCPI300_0@toc@ha
; CHECK-P8-NEXT: lfs f2, .LCPI300_0@toc@l(r4)
; CHECK-P8-NEXT: xscvuxddp f0, f0
; CHECK-P8-NEXT: xscvuxddp f1, f1
; CHECK-P8-NEXT: xsadddp f0, f0, f2
; CHECK-P8-NEXT: xsadddp f1, f1, f2
; CHECK-P8-NEXT: stfd f1, 0(r3)
; CHECK-P8-NEXT: stfd f0, 8(r3)
; CHECK-P8-NEXT: blr
entry:
%idx = getelementptr inbounds i8, ptr %ptr, i64 8
%i0 = load i8, ptr %ptr, align 1
%i1 = load i8, ptr %idx, align 1
%f0 = uitofp i8 %i0 to double
%f1 = uitofp i8 %i1 to double
%a0 = fadd double %f0, -1.280000e+02
%a1 = fadd double %f1, -1.280000e+02
store double %a1, ptr %ptr, align 8
store double %a0, ptr %idx, align 8
ret void
}
58 changes: 58 additions & 0 deletions llvm/test/CodeGen/PowerPC/scalar-float-ldst.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -7271,3 +7271,61 @@ entry:
store double %conv, ptr inttoptr (i64 1000000000000 to ptr), align 4096
ret void
}

define dso_local void @st_reversed_float_from_i8(ptr %ptr) {
; CHECK-P10-LABEL: st_reversed_float_from_i8:
; CHECK-P10: # %bb.0: # %entry
; CHECK-P10-NEXT: li r4, 8
; CHECK-P10-NEXT: lxsibzx f0, 0, r3
; CHECK-P10-NEXT: xxspltidp vs2, -1023410176
; CHECK-P10-NEXT: lxsibzx f1, r3, r4
; CHECK-P10-NEXT: xscvuxdsp f0, f0
; CHECK-P10-NEXT: xscvuxdsp f1, f1
; CHECK-P10-NEXT: xsaddsp f0, f0, f2
; CHECK-P10-NEXT: xsaddsp f1, f1, f2
; CHECK-P10-NEXT: stfs f0, 8(r3)
; CHECK-P10-NEXT: stfs f1, 0(r3)
; CHECK-P10-NEXT: blr
;
; CHECK-P9-LABEL: st_reversed_float_from_i8:
; CHECK-P9: # %bb.0: # %entry
; CHECK-P9-NEXT: li r4, 8
; CHECK-P9-NEXT: lxsibzx f0, 0, r3
; CHECK-P9-NEXT: lxsibzx f1, r3, r4
; CHECK-P9-NEXT: addis r4, r2, .LCPI300_0@toc@ha
; CHECK-P9-NEXT: lfs f2, .LCPI300_0@toc@l(r4)
; CHECK-P9-NEXT: xscvuxdsp f0, f0
; CHECK-P9-NEXT: xscvuxdsp f1, f1
; CHECK-P9-NEXT: xsaddsp f0, f0, f2
; CHECK-P9-NEXT: xsaddsp f1, f1, f2
; CHECK-P9-NEXT: stfs f0, 8(r3)
; CHECK-P9-NEXT: stfs f1, 0(r3)
; CHECK-P9-NEXT: blr
;
; CHECK-P8-LABEL: st_reversed_float_from_i8:
; CHECK-P8: # %bb.0: # %entry
; CHECK-P8-NEXT: lbz r4, 0(r3)
; CHECK-P8-NEXT: lbz r5, 8(r3)
; CHECK-P8-NEXT: mtfprwz f0, r4
; CHECK-P8-NEXT: mtfprwz f1, r5
; CHECK-P8-NEXT: addis r4, r2, .LCPI300_0@toc@ha
; CHECK-P8-NEXT: lfs f2, .LCPI300_0@toc@l(r4)
; CHECK-P8-NEXT: xscvuxdsp f0, f0
; CHECK-P8-NEXT: xscvuxdsp f1, f1
; CHECK-P8-NEXT: xsaddsp f0, f0, f2
; CHECK-P8-NEXT: xsaddsp f1, f1, f2
; CHECK-P8-NEXT: stfs f1, 0(r3)
; CHECK-P8-NEXT: stfs f0, 8(r3)
; CHECK-P8-NEXT: blr
entry:
%idx = getelementptr inbounds i8, ptr %ptr, i64 8
%i0 = load i8, ptr %ptr, align 1
%i1 = load i8, ptr %idx, align 1
%f0 = uitofp i8 %i0 to float
%f1 = uitofp i8 %i1 to float
%a0 = fadd float %f0, -1.280000e+02
%a1 = fadd float %f1, -1.280000e+02
store float %a1, ptr %ptr, align 8
store float %a0, ptr %idx, align 8
ret void
}
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