https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63264
Bug ID: 63264
Summary: Internal error due to invalid assembler register
specification
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: mikulas at artax dot karlin.mff.cuni.cz
Host: x86_64-linux-gnux32
Target: x86_64-linux-gnux32
Build: x86_64-linux-gnux32
This piece of code:
void f(unsigned x)
{
__asm__ volatile ("xorl %R0, %R0":"=r"(x):"r"(x):"cc");
}
triggers this internal error:
asm-crash.c: In function 'f':
asm-crash.c:4:1: internal compiler error: in ix86_print_operand, at
config/i386/i386.c:15214
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The error happens in i386, x86-64 and x32 mode. With or without optimization.
