http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49742
Summary: ICE for gcc.dg/vect/O3-pr39675-2.c on ARM
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Test gcc.dg/vect/O3/pr39675-2.c fails with an ICE on arm-none-linux-gnueabi:
Executing on host: arm-none-linux-gnueabi-gcc
/scratch/janisjo/arm-linux-fsf/src/gcc-mainline/gcc/testsuite/gcc.dg/vect/O3-pr39675-2.c
-mfpu=neon -mfloat-abi=softfp -ffast-math -ftree-vectorize
-fno-vect-cost-model -O2 -fdump-tree-vect-details -O3 -fno-ipa-cp-clone -S -o
O3-pr39675-2.s (timeout = 300)
/scratch/janisjo/arm-linux-fsf/src/gcc-mainline/gcc/testsuite/gcc.dg/vect/O3-pr39675-2.c:
In function 'foo':
/scratch/janisjo/arm-linux-fsf/src/gcc-mainline/gcc/testsuite/gcc.dg/vect/O3-pr39675-2.c:27:1:
error: insn does not satisfy its constraints:
(insn 95 37 44 2 (set (reg:V2SI 95 d16 [orig:177 vect_array.21_I_lsm0.31 ]
[177])
(mem/u/c/i:V2SI (symbol_ref/u:SI ("*.LC0") [flags 0x2]) [3 S8 A64]))
750 {*neon_movv2si}
(nil))
/scratch/janisjo/arm-linux-fsf/src/gcc-mainline/gcc/testsuite/gcc.dg/vect/O3-pr39675-2.c:27:1:
internal compiler error: in reload_cse_simplify_operands, at postreload.c:403
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The same failure results if the test program is compiled with options
"-mfpu=neon -mfloat-abi=softfp -O3".
The test starts failing with this patch:
2011-06-30 Richard Guenther <[email protected]>
PR tree-optimization/46787
* tree-data-ref.c (dr_address_invariant_p): Remove.
(find_data_references_in_stmt): Invariant accesses are ok now.
* tree-vect-stmts.c (vectorizable_load): Handle invariant
loads.
* tree-vect-data-refs.c (vect_analyze_data_ref_access): Allow
invariant loads.
* gcc.dg/vect/vect-121.c: New testcase.
r175704 | rguenth | 2011-06-30 13:27:43 +0000 (Thu, 30 Jun 2011)
