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1; RUN: opt < %s -instcombine -S | FileCheck %s
2
3define 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)
6  ret double %pow
7}
8
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
13
14define 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)
17  ret double %pow
18}
19
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
24
25define 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)
28  ret double %pow
29}
30
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
35
36define 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)
39  ret double %pow
40}
41
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)
45
46declare double @exp(double)
47declare double @exp2(double)
48declare double @llvm.pow.f64(double, double)
49
50