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Fix SimplifyLibCalls to transfer attributes from callees rather than

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calls, since direct calls don't always reflect the attributes of their
callees.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82867 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-09-26 18:10:13 +00:00
parent c70c37794f
commit 76926b6789
2 changed files with 13 additions and 10 deletions
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test/Transforms/SimplifyLibCalls/pow-to-sqrt.ll
+6 -6
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@@ -5,27 +5,27 @@
; special cases. The readonly attribute on the call should be preserved.
; CHECK: define float @foo(float %x) nounwind {
; CHECK: %sqrtf = call float @sqrtf(float %x) readonly
; CHECK: %fabsf = call float @fabsf(float %sqrtf) readonly
; CHECK: %sqrtf = call float @sqrtf(float %x) nounwind readonly
; CHECK: %fabsf = call float @fabsf(float %sqrtf) nounwind readonly
; CHECK: %tmp = fcmp oeq float %x, 0xFFF0000000000000
; CHECK: %tmp1 = select i1 %tmp, float 0x7FF0000000000000, float %fabsf
; CHECK: ret float %tmp1
define float @foo(float %x) nounwind {
%retval = call float @powf(float %x, float 0.5) readonly
%retval = call float @powf(float %x, float 0.5)
ret float %retval
}
; CHECK: define double @doo(double %x) nounwind {
; CHECK: %sqrt = call double @sqrt(double %x) readonly
; CHECK: %fabs = call double @fabs(double %sqrt) readonly
; CHECK: %sqrt = call double @sqrt(double %x) nounwind readonly
; CHECK: %fabs = call double @fabs(double %sqrt) nounwind readonly
; CHECK: %tmp = fcmp oeq double %x, 0xFFF0000000000000
; CHECK: %tmp1 = select i1 %tmp, double 0x7FF0000000000000, double %fabs
; CHECK: ret double %tmp1
; CHECK: }
define double @doo(double %x) nounwind {
%retval = call double @pow(double %x, double 0.5) readonly
%retval = call double @pow(double %x, double 0.5)
ret double %retval
}