1 ; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
4 ; SimplifyLibcalls should optimize pow(x, 0.5) to sqrt plus code to handle
5 ; special cases. The readonly attribute on the call should be preserved.
7 ; CHECK: define float @foo(float %x) nounwind {
8 ; CHECK: %sqrtf = call float @sqrtf(float %x) nounwind readonly
9 ; CHECK: %fabsf = call float @fabsf(float %sqrtf) nounwind readonly
10 ; CHECK: %tmp = fcmp oeq float %x, 0xFFF0000000000000
11 ; CHECK: %tmp1 = select i1 %tmp, float 0x7FF0000000000000, float %fabsf
12 ; CHECK: ret float %tmp1
14 define float @foo(float %x) nounwind {
15 %retval = call float @powf(float %x, float 0.5)
19 ; CHECK: define double @doo(double %x) nounwind {
20 ; CHECK: %sqrt = call double @sqrt(double %x) nounwind readonly
21 ; CHECK: %fabs = call double @fabs(double %sqrt) nounwind readonly
22 ; CHECK: %tmp = fcmp oeq double %x, 0xFFF0000000000000
23 ; CHECK: %tmp1 = select i1 %tmp, double 0x7FF0000000000000, double %fabs
24 ; CHECK: ret double %tmp1
27 define double @doo(double %x) nounwind {
28 %retval = call double @pow(double %x, double 0.5)
32 declare float @powf(float, float) nounwind readonly
33 declare double @pow(double, double) nounwind readonly