; CHECK-NEXT: %exp = call fast double @exp(double %mul)
; CHECK-NEXT: ret double %exp
+define double @pow_exp2(double %x, double %y) #0 {
+ %call = call fast double @exp2(double %x) #0
+ %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
+
; FIXME: This should not be transformed because the 'exp' call is not fast.
define double @pow_exp_not_fast(double %x, double %y) #0 {
%call = call double @exp(double %x)
; 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)
attributes #0 = { "unsafe-fp-math"="true" nounwind readnone }
+++ /dev/null
-; RUN: opt < %s -instcombine -S | FileCheck %s
-
-define double @mypow(double %x, double %y) #0 {
-entry:
- %call = call double @exp2(double %x)
- %pow = call double @llvm.pow.f64(double %call, double %y)
- ret double %pow
-}
-
-; CHECK-LABEL: define double @mypow(
-; CHECK: %mul = fmul fast double %x, %y
-; CHECK: %exp2 = call fast double @exp2(double %mul) #0
-; CHECK: ret double %exp2
-; CHECK: }
-
-declare double @exp2(double) #1
-declare double @llvm.pow.f64(double, double)
-attributes #0 = { "unsafe-fp-math"="true" }
-attributes #1 = { "unsafe-fp-math"="true" }