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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2012-11-19 23:28:04 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2012-11-19 23:28:04 +0000 |
| commit | 0343822bd86552c0264836a6d6f0927bf39c87b1 (patch) | |
| tree | 93122eaac614328a2889483eabeeb9a843d1337d /gcc/simplify-rtx.c | |
| parent | 0e8330d91d13ed0200ef902c596d349ab1969d19 (diff) | |
| download | gcc-0343822bd86552c0264836a6d6f0927bf39c87b1.zip gcc-0343822bd86552c0264836a6d6f0927bf39c87b1.tar.gz gcc-0343822bd86552c0264836a6d6f0927bf39c87b1.tar.bz2 | |
re PR middle-end/55359 (ICE in simplify_subreg accessing an unaligned subvector)
gcc/
PR middle-end/55359
* simplify-rtx.c (simplify_subreg): Return null for invalid offsets.
gcc/testsuite/
* gcc.target/i386/pr55359.c: New test.
From-SVN: r193640
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 18223a8..46d9e8a 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -5685,8 +5685,11 @@ simplify_subreg (enum machine_mode outermode, rtx op, gcc_assert (GET_MODE (op) == innermode || GET_MODE (op) == VOIDmode); - gcc_assert ((byte % GET_MODE_SIZE (outermode)) == 0); - gcc_assert (byte < GET_MODE_SIZE (innermode)); + if ((byte % GET_MODE_SIZE (outermode)) != 0) + return NULL_RTX; + + if (byte >= GET_MODE_SIZE (innermode)) + return NULL_RTX; if (outermode == innermode && !byte) return op; |