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))))))

*** Bug 53374 has been marked as a duplicate of this bug. ***

*** Bug 53393 has been marked as a duplicate of this bug. ***

*** Bug 53381 has been marked as a duplicate of this bug. ***

14 spec2006 tests also fail after the commit 187459,
(compiled with -O2 -march=corei7 -mtune=corei7 -mavx -m64)
However without -mavx they pass.

Author: danglin
Date: Sun May 20 16:32:50 2012
New Revision: 187695

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187695
Log:
	PR rtl-optimzation/53373
	* config/pa/pa.md (call_symref_pic): Don't expose PIC register save in
	call pattern.  Update split patterns.
	(call_symref_64bit, call_reg_pic, call_reg_64bit, call_val_symref_pic,
	call_val_symref_64bit, call_val_reg_pic, call_val_reg_64bit): Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/pa/pa.md

revision 187695 does not solve PR53393

On 20-May-12, at 1:10 PM, vincenzo.innocente at cern dot ch wrote:

> revision 187695 does not solve PR53393

I didn't say it did and I didn't merge the PRs.  In particular, a PA  
issue
was merged with a x86_64 issue.  For PA, the patch avoids the  
problematic
code in the middle-end and improves call optimization.

There is a generic fix posted for PR53381 that might resolve the x86_64
ICE reported here.   I assume the ICE occurs because the x86_64 call  
pattern
contains an UNSPEC.  See also comment 7 in PR53381.

--
John David Anglin	dave.anglin@bell.net

*** Bug 53427 has been marked as a duplicate of this bug. ***

A small testcase

struct gomp_task {
  void *fn_data;
};
extern void *gomp_malloc (unsigned long int);
void GOMP_task (void (*fn) (void *), void *data,
		void (*cpyfn) (void *, void *),
		long arg_size, long arg_align)
{
  struct gomp_task *task;
  char *arg;
  task = gomp_malloc (sizeof (*task) + arg_size + arg_align - 1);
  __builtin_memcpy (arg, data, arg_size);
  task->fn_data = arg;
}

compiled with -m64 -mavx -O2.

Author: bernds
Date: Mon May 21 21:37:01 2012
New Revision: 187745

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187745
Log:
	PR rtl-optimization/53373
	* caller-save.c (save_call_clobbered_regs): Look into a possible
	PARALLEL manually rather than using single_set on a call insn.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/caller-save.c

gcc build for me with -march=native equivalent to -march=bdver1 (and therefore -mavx)
with the "latest" trunk revision 187789

Fixed.