[Bug rtl-optimization/50030] New: Regression: sin optimized in sinf at -O2

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50030

           Summary: Regression: sin  optimized in sinf at -O2
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: vincenzo.innoce...@cern.ch
            Target: x86_64-unknown-linux-gnu


I do not think that this should happen at -O2
float  sind(float x) {
   return ::sin(x);
}
<sind(float)>:
  40:    e9 00 00 00 00           jmpq   45 <sind(float)+0x5>
            41: R_X86_64_PC32    sinf-0x4
  45:    66 66 2e 0f 1f 84 00     nopw   %cs:0x0(%rax,%rax,1)
  4c:    00 00 00 00 

as it DOES NOT happen for ::exp for instance
(fine at -Ofast of course!)


gcc version 4.7.0 20110806 (experimental) (GCC)