http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53373
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-05-16
CC| |bernds at gcc dot gnu.org
Component|tree-optimization |rtl-optimization
Target Milestone|--- |4.8.0
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-16
10:05:29 UTC ---
Confirmed. Caused by Bernds call-return value stuff.
Program received signal SIGSEGV, Segmentation fault.
0x000000000064528e in save_call_clobbered_regs ()
at /space/rguenther/src/svn/trunk/gcc/caller-save.c:876
876 rtx dest = SET_DEST (call_set);
(gdb) p call_set
$1 = (rtx) 0x0
(gdb) call debug_rtx (insn)
(call_insn 1344 1343 1347 114 (parallel [
(set (reg:DI 0 ax)
(call (mem:QI (symbol_ref:DI ("memcpy") [flags 0x41]
<function_decl 0x7ffff5aab200 memcpy>) [0 memcpy S1 A8])
(const_int 0 [0])))
(unspec [
(const_int 2 [0x2])
] UNSPEC_CALL_NEEDS_VZEROUPPER)
]) libfftpack/fftpack.c:308 632 {*call_value_vzeroupper}
(expr_list:REG_DEAD (reg:DI 5 di)
(expr_list:REG_DEAD (reg:DI 4 si)
(expr_list:REG_DEAD (reg:DI 1 dx)
(expr_list:REG_UNUSED (reg:DI 0 ax)
(expr_list:REG_RETURNED (reg:DI 2 cx [orig:769 ivtmp.2819 ]
[769])
(expr_list:REG_EH_REGION (const_int 0 [0])
(nil)))))))
(expr_list:REG_FRAME_RELATED_EXPR (set (reg:DI 0 ax)
(reg:DI 5 di))
(expr_list:REG_FRAME_RELATED_EXPR (use (reg:DI 5 di))
(expr_list:REG_FRAME_RELATED_EXPR (use (reg:DI 4 si))
(expr_list:REG_FRAME_RELATED_EXPR (use (reg:DI 1 dx))
(nil))))))
