File: log-pow-nofastmath.ll

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llvm-toolchain-5.0 1:5.0.1-2~bpo9+1
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; RUN: opt < %s -instcombine -S | FileCheck %s

define double @mylog(double %x, double %y) {
entry:
  %pow = call double @llvm.pow.f64(double %x, double %y)
  %call = call double @log(double %pow)
  ret double %call
}

; CHECK-LABEL: define double @mylog(
; CHECK:   %pow = call double @llvm.pow.f64(double %x, double %y)
; CHECK:   %call = call double @log(double %pow)
; CHECK:   ret double %call
; CHECK: }

define double @test3(double %x) {
  %call2 = call double @exp2(double %x)
  %call3 = call double @log(double %call2)
  ret double %call3
}

; CHECK-LABEL: @test3
; CHECK:   %call2 = call double @exp2(double %x)
; CHECK:   %call3 = call double @log(double %call2)
; CHECK:   ret double %call3
; CHECK: }

declare double @log(double)
declare double @exp2(double)
declare double @llvm.pow.f64(double, double)