[Bug inline-asm/59155] New: ICE: in reg_overlap_mentioned_p, at rtlanal.c:1473

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59155

            Bug ID: 59155
           Summary: ICE: in reg_overlap_mentioned_p, at rtlanal.c:1473
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: inline-asm
          Assignee: unassigned at gcc dot gnu.org
          Reporter: glisse at gcc dot gnu.org
            Target: x86_64-unknown-linux-gnu

double f(double x){
  asm volatile("":"+X"(x));
  return x;
}
double g(double x,double y){
  return f(f(x)+f(y));
}

compiled with -O2:

a.c: In function 'g':
a.c:7:1: internal compiler error: in reg_overlap_mentioned_p, at rtlanal.c:1473
 }
 ^
0x967015 reg_overlap_mentioned_p(rtx_def const*, rtx_def const*)
    /data/repos/gcc/pristine/gcc/rtlanal.c:1473
0x7cde02 match_asm_constraints_1
    /data/repos/gcc/pristine/gcc/function.c:7164
0x7cdfda rest_of_match_asm_constraints
    /data/repos/gcc/pristine/gcc/function.c:7207
0x7cdfda execute
    /data/repos/gcc/pristine/gcc/function.c:7239
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