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; RUN: opt < %s -instcombine -S | FileCheck %s
define double @pow_exp(double %x, double %y) {
%call = call fast double @exp(double %x) nounwind readnone
%pow = call fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; CHECK-LABEL: define double @pow_exp(
; CHECK-NEXT: %mul = fmul fast double %x, %y
; CHECK-NEXT: %exp = call fast double @exp(double %mul)
; CHECK-NEXT: ret double %exp
define double @pow_exp2(double %x, double %y) {
%call = call fast double @exp2(double %x) nounwind readnone
%pow = call fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; CHECK-LABEL: define double @pow_exp2(
; CHECK-NEXT: %mul = fmul fast double %x, %y
; CHECK-NEXT: %exp2 = call fast double @exp2(double %mul)
; CHECK-NEXT: ret double %exp2
define double @pow_exp_not_fast(double %x, double %y) {
%call = call double @exp(double %x)
%pow = call fast double @llvm.pow.f64(double %call, double %y)
ret double %pow
}
; CHECK-LABEL: define double @pow_exp_not_fast(
; CHECK-NEXT: %call = call double @exp(double %x)
; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call, double %y)
; CHECK-NEXT: ret double %pow
define double @function_pointer(double ()* %fptr, double %p1) {
%call1 = call fast double %fptr()
%pow = call fast double @llvm.pow.f64(double %call1, double %p1)
ret double %pow
}
; CHECK-LABEL: @function_pointer
; CHECK-NEXT: %call1 = call fast double %fptr()
; CHECK-NEXT: %pow = call fast double @llvm.pow.f64(double %call1, double %p1)
declare double @exp(double)
declare double @exp2(double)
declare double @llvm.pow.f64(double, double)
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