[LLVMbugs] [Bug 9592] New: Comparing floats with constant doubles promotes to float

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9592

           Summary: Comparing floats with constant doubles promotes to
                    float
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jmuizelaar at mozilla.com
                CC: llvmbugs at cs.uiuc.edu


The following code:
float clamp_float(float a)
{
                if (a > 1.)
                        return 1.;
                else
                        return a;
}

compiles to:

        cvtss2sd        %xmm0, %xmm1
        ucomisd .LCPI0_0(%rip), %xmm1
        jbe     .LBB0_2
# BB#1:
        movss   .LCPI0_1(%rip), %xmm0
.LBB0_2:                                # %entry
        ret

GCC avoids the promotion to double.

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.