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Apply the SSE dependence idiom for SSE unary operations to

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SD instructions too, in addition to SS instructions. And
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108191 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-07-12 20:46:04 +00:00
parent 4d5fe97c47
commit cfbf0ed8b0
2 changed files with 49 additions and 2 deletions
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41
test/CodeGen/X86/break-sse-dep.ll
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@@ -19,3 +19,44 @@ entry:
%1 = fptrunc double %0 to float
ret float %1
}
define float @squirtf(float* %x) nounwind {
entry:
; CHECK: squirtf:
; CHECK: movss (%rdi), %xmm0
; CHECK: sqrtss %xmm0, %xmm0
%z = load float* %x
%t = call float @llvm.sqrt.f32(float %z)
ret float %t
}
define double @squirt(double* %x) nounwind {
entry:
; CHECK: squirt:
; CHECK: movsd (%rdi), %xmm0
; CHECK: sqrtsd %xmm0, %xmm0
%z = load double* %x
%t = call double @llvm.sqrt.f64(double %z)
ret double %t
}
define float @squirtf_size(float* %x) nounwind optsize {
entry:
; CHECK: squirtf_size:
; CHECK: sqrtss (%rdi), %xmm0
%z = load float* %x
%t = call float @llvm.sqrt.f32(float %z)
ret float %t
}
define double @squirt_size(double* %x) nounwind optsize {
entry:
; CHECK: squirt_size:
; CHECK: sqrtsd (%rdi), %xmm0
%z = load double* %x
%t = call double @llvm.sqrt.f64(double %z)
ret double %t
}
declare float @llvm.sqrt.f32(float)
declare double @llvm.sqrt.f64(double)