1 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 define double @pow_exp(double %x, double %y) {
4 %call = call fast double @exp(double %x) nounwind readnone
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 define double @pow_exp2(double %x, double %y) {
15 %call = call fast double @exp2(double %x) nounwind readnone
16 %pow = call fast double @llvm.pow.f64(double %call, double %y)
20 ; CHECK-LABEL: define double @pow_exp2(
21 ; CHECK-NEXT: %mul = fmul fast double %x, %y
22 ; CHECK-NEXT: %exp2 = call fast double @exp2(double %mul)
23 ; CHECK-NEXT: ret double %exp2
25 define double @pow_exp_not_fast(double %x, double %y) {
26 %call = call double @exp(double %x)
27 %pow = call fast double @llvm.pow.f64(double %call, double %y)
31 ; CHECK-LABEL: define double @pow_exp_not_fast(
32 ; CHECK-NEXT: %call = call double @exp(double %x)
33 ; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call, double %y)
34 ; CHECK-NEXT: ret double %pow
36 define double @function_pointer(double ()* %fptr, double %p1) {
37 %call1 = call fast double %fptr()
38 %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
42 ; CHECK-LABEL: @function_pointer
43 ; CHECK-NEXT: %call1 = call fast double %fptr()
44 ; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
46 declare double @exp(double)
47 declare double @exp2(double)
48 declare double @llvm.pow.f64(double, double)