The following (IMHO valid) code snippet triggers an ICE since GCC 4.3.0
when compiled with "-O":
========================================
double foo()
{
double x;
asm("" : "=r,r"(x) : "0,0"(x));
return x;
}
========================================
bug.c: In function 'foo':
bug.c:5: internal compiler error: in reg_overlap_mentioned_p, at rtlanal.c:1393
Please submit a full bug report, [etc.]
The same code compiles fine if I use float instead of double.
--
Summary: [4.3/4.4 regression] ICE with double in inline-asm
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: inline-asm
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39058
