1 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 define double @pow_exp(double %x, double %y) #0 {
4 %call = call fast double @exp(double %x) #0
5 %pow = call fast double @llvm.pow.f64(double %call, double %y)
9 ; CHECK-LABEL: define double @pow_exp(
10 ; CHECK-NEXT: %mul = fmul fast double %x, %y
11 ; CHECK-NEXT: %exp = call fast double @exp(double %mul)
12 ; CHECK-NEXT: ret double %exp
14 ; FIXME: This should not be transformed because the 'exp' call is not fast.
15 define double @pow_exp_not_fast(double %x, double %y) #0 {
16 %call = call double @exp(double %x)
17 %pow = call fast double @llvm.pow.f64(double %call, double %y)
21 ; CHECK-LABEL: define double @pow_exp_not_fast(
22 ; CHECK-NEXT: %call = call double @exp(double %x)
23 ; CHECK-NEXT: %mul = fmul fast double %x, %y
24 ; CHECK-NEXT: %exp = call fast double @exp(double %mul)
25 ; CHECK-NEXT: ret double %exp
27 define double @function_pointer(double ()* %fptr, double %p1) #0 {
28 %call1 = call fast double %fptr()
29 %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
33 ; CHECK-LABEL: @function_pointer
34 ; CHECK-NEXT: %call1 = call fast double %fptr()
35 ; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
37 declare double @exp(double)
38 declare double @llvm.pow.f64(double, double)
39 attributes #0 = { "unsafe-fp-math"="true" nounwind readnone }