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| author | Richard Biener <rguenther@suse.de> | 2016-07-26 14:11:21 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-07-26 14:11:21 +0000 |
| commit | 0b64ca40f30eefc43dcfebaaf918a48e1c3b3dcc (patch) | |
| tree | fb1a1913e5d9f2927ba13618faca231eceb9f991 /gcc/simplify-rtx.c | |
| parent | ab2b55c1093acf8b95b07147afe213cd6e98777f (diff) | |
| download | gcc-0b64ca40f30eefc43dcfebaaf918a48e1c3b3dcc.zip gcc-0b64ca40f30eefc43dcfebaaf918a48e1c3b3dcc.tar.gz gcc-0b64ca40f30eefc43dcfebaaf918a48e1c3b3dcc.tar.bz2 | |
re PR rtl-optimization/71984 (wrong code with -O -mavx512cd)
2016-07-26 Richard Biener <rguenther@suse.de>
PR rtl-optimization/71984
* simplify-rtx.c (simplify_subreg): Use GET_MODE_SIZE and prepare
for VOIDmode.
* gcc.dg/torture/pr71984.c: New testcase.
From-SVN: r238757
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 c34f2f55..691c2c1 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -6116,7 +6116,10 @@ simplify_subreg (machine_mode outermode, rtx op, unsigned int part_size, final_offset; rtx part, res; - part_size = GET_MODE_UNIT_SIZE (GET_MODE (XEXP (op, 0))); + enum machine_mode part_mode = GET_MODE (XEXP (op, 0)); + if (part_mode == VOIDmode) + part_mode = GET_MODE_INNER (GET_MODE (op)); + part_size = GET_MODE_SIZE (part_mode); if (byte < part_size) { part = XEXP (op, 0); @@ -6131,7 +6134,7 @@ simplify_subreg (machine_mode outermode, rtx op, if (final_offset + GET_MODE_SIZE (outermode) > part_size) return NULL_RTX; - enum machine_mode part_mode = GET_MODE (part); + part_mode = GET_MODE (part); if (part_mode == VOIDmode) part_mode = GET_MODE_INNER (GET_MODE (op)); res = simplify_subreg (outermode, part, part_mode, final_offset); |