| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define double @mylog(double %x, double %y) #0 { |
| entry: |
| %pow = call double @llvm.pow.f64(double %x, double %y) |
| %call = call double @log(double %pow) #0 |
| ret double %call |
| } |
| |
| ; CHECK-LABEL: define double @mylog( |
| ; CHECK: %log = call fast double @log(double %x) #0 |
| ; CHECK: %mul = fmul fast double %log, %y |
| ; CHECK: ret double %mul |
| ; CHECK: } |
| |
| define double @test2(double ()* %fptr, double %p1) #0 { |
| %call1 = call double %fptr() |
| %pow = call double @log(double %call1) |
| ret double %pow |
| } |
| |
| ; CHECK-LABEL: @test2 |
| ; CHECK: log |
| |
| define double @test3(double %x) #0 { |
| %call2 = call double @exp2(double %x) #0 |
| %call3 = call double @log(double %call2) #0 |
| ret double %call3 |
| } |
| |
| ; CHECK-LABEL: @test3 |
| ; CHECK: %call2 = call double @exp2(double %x) #0 |
| ; CHECK: %logmul = fmul fast double %x, 0x3FE62E42FEFA39EF |
| ; CHECK: ret double %logmul |
| ; CHECK: } |
| |
| declare double @log(double) #0 |
| declare double @exp2(double) #0 |
| declare double @llvm.pow.f64(double, double) |
| |
| attributes #0 = { "unsafe-fp-math"="true" } |