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[Bug target/69525] [6 Regression] ICE: Segmentation fault in ix86_expand_prologue
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 28 Jan 2016 08:40:13 +0000
- Subject: [Bug target/69525] [6 Regression] ICE: Segmentation fault in ix86_expand_prologue
- Auto-submitted: auto-generated
- References: <bug-69525-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69525
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Somehow we expect to have a drap_reg but we don't
Program received signal SIGSEGV, Segmentation fault.
0x00000000011fd13e in rhs_regno (x=0x0)
at /space/rguenther/src/svn/trunk3/gcc/rtl.h:1785
1785 return REG_CHECK (x)->regno;
Missing separate debuginfos, use: zypper install
libgmp10-debuginfo-6.0.0-71.1.x86_64 libisl15-debuginfo-0.15-0.x86_64
libmpc3-debuginfo-1.0.2-38.2.x86_64 libmpfr4-debuginfo-3.1.2-3.1.2.x86_64
(gdb) up
#1 0x0000000001217da1 in ix86_expand_prologue ()
at /space/rguenther/src/svn/trunk3/gcc/config/i386/i386.c:12746
12746 if (!call_used_regs[REGNO (crtl->drap_reg)])
(gdb) l
12741 if (stack_realign_drap)
12742 {
12743 int align_bytes = crtl->stack_alignment_needed / BITS_PER_UNIT;
12744
12745 /* Only need to push parameter pointer reg if it is caller saved.
*/
12746 if (!call_used_regs[REGNO (crtl->drap_reg)])
12747 {
12748 /* Push arg pointer reg */
12749 insn = emit_insn (gen_push (crtl->drap_reg));
12750 RTX_FRAME_RELATED_P (insn) = 1;