https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84064
Bug ID: 84064
Summary: ICE in ix86_expand_prologue related to
-fstack-clash-protection and memcpy on i686
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: law at redhat dot com
Reporter: fw at gcc dot gnu.org
Target Milestone: ---
Target: i686
Compile this with -O2 -m32 -march=i686 -fstack-clash-protection:
void
f (void *p1, void *p2)
{
__builtin_memcpy (p1, p2, 1000);
}
The failing assertion is:
/* We expect the GP registers to be saved when probes are used
as the probing sequences might need a scratch register and
the routine to allocate one assumes the integer registers
have already been saved. */
gcc_assert (int_registers_saved);
Seen with trunk@257087.
