1; RUN: opt -instcombine -S -disable-simplify-libcalls < %s | FileCheck %s 2; rdar://10466410 3 4; Instcombine tries to fold (fptrunc (sqrt (fpext x))) -> (sqrtf x), but this 5; shouldn't fold when sqrtf isn't available. 6define float @foo(float %f) uwtable ssp { 7entry: 8; CHECK: %conv = fpext float %f to double 9; CHECK: %call = tail call double @sqrt(double %conv) 10; CHECK: %conv1 = fptrunc double %call to float 11 %conv = fpext float %f to double 12 %call = tail call double @sqrt(double %conv) 13 %conv1 = fptrunc double %call to float 14 ret float %conv1 15} 16 17declare double @sqrt(double) 18