[Bug tree-optimization/29553] New: wrong-code / trivial logic misscompiled.

[pluto at agmk dot net]

long foo( bool flag, int __x )
{
        return ( flag ? (unsigned)__x : __x ); // broken
}

long bar( bool flag, int __x )
{
        if ( flag )
                return (unsigned)__x;
        else
                return __x;
}

0000000000000000 <foo(bool, int)>:
   0:   89 f0                   mov    %esi,%eax
   2:   c3                      retq

0000000000000010 <bar(bool, int)>:
  10:   89 f0                   mov    %esi,%eax
  12:   40 84 ff                test   %dil,%dil
  15:   48 63 f6                movslq %esi,%rsi
  18:   48 0f 44 c6             cmove  %rsi,%rax
  1c:   c3                      retq


-- 
           Summary: wrong-code / trivial logic misscompiled.
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pluto at agmk dot net
GCC target triplet: x86_64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29553