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d790a5ceee
volatile memory references are safe to move. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56948 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
445 B
LLVM
18 lines
445 B
LLVM
; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 | grep movsd | count 5
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; RUN: llvm-as < %s | llc -march=x86 -mattr=sse2 -fast | grep movsd | count 5
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@x = external global double
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define void @foo() nounwind {
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%a = volatile load double* @x
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volatile store double 0.0, double* @x
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volatile store double 0.0, double* @x
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%b = volatile load double* @x
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ret void
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}
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define void @bar() nounwind {
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%c = volatile load double* @x
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ret void
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}
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