[Bug target/57431] New: ICE in simplify_const_unary_operation vld1_dup_s64/vst1_s64

["christophe.lyon at st dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57431

            Bug ID: 57431
           Summary: ICE in simplify_const_unary_operation
                    vld1_dup_s64/vst1_s64
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: christophe.lyon at st dot com

Created attachment 30204
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30204&action=edit
testcase

The attached program makes GCC crash when using -O1, -O2 or -O3. Compiles fine
with -O0.

$ arm-none-linux-gnueabi-gcc -mcpu=cortex-a9 -mfloat-abi=softfp -mfpu=neon -O1
-c myref_vld1_dup.c
myref_vld1_dup.c: In function 'exec_vld1_dup':
myref_vld1_dup.c:16:1: internal compiler error: in
simplify_const_unary_operation, at simplify-rtx.c:1503
 }
 ^
0xa768aa simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
       
/work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/simplify-rtx.c:1503
0xa743b4 simplify_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
       
/work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/simplify-rtx.c:791
0xffc467 fold_rtx
        /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/cse.c:3287
0xfff4d0 cse_insn
        /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/cse.c:4573
0x1004e2e cse_extended_basic_block
        /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/cse.c:6405
0x10053ca cse_main
        /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/cse.c:6583
0x10070b1 rest_of_handle_cse
        /work1/lyon/Work/ARM/Linaro/sources/gcc-fsf/trunk/gcc/cse.c:7433