41 lines
1.2 KiB
LLVM
41 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-- -mattr=sse2 | FileCheck %s --check-prefixes=ALL,OPT
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; RUN: llc < %s -mtriple=i686-- -mattr=sse2 -O0 | FileCheck %s --check-prefixes=ALL,NOOPT
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@x = external dso_local global double
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define void @foo() nounwind {
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; OPT-LABEL: foo:
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; OPT: # %bb.0:
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; OPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; OPT-NEXT: xorps %xmm0, %xmm0
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; OPT-NEXT: movsd %xmm0, x
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; OPT-NEXT: movsd %xmm0, x
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; OPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; OPT-NEXT: retl
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;
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; NOOPT-LABEL: foo:
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; NOOPT: # %bb.0:
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; NOOPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; NOOPT-NEXT: xorps %xmm0, %xmm0
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; NOOPT-NEXT: movsd %xmm0, x
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; NOOPT-NEXT: xorps %xmm0, %xmm0
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; NOOPT-NEXT: movsd %xmm0, x
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; NOOPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; NOOPT-NEXT: retl
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%a = load volatile double, ptr @x
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store volatile double 0.0, ptr @x
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store volatile double 0.0, ptr @x
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%b = load volatile double, ptr @x
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ret void
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}
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define void @bar() nounwind {
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; ALL-LABEL: bar:
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; ALL: # %bb.0:
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; ALL-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
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; ALL-NEXT: retl
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%c = load volatile double, ptr @x
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ret void
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}
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