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| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-05-03 10:29:55 +0000 |
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| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-05-03 10:29:55 +0000 |
| commit | bd0201b6c09dfd48d75005551be4c16ee252ba4c (patch) | |
| tree | 6ec5e9118f563242bcd6663e613ba47f0e2d5557 /gcc/builtins.h | |
| parent | 69105acc9c655b95feb2d6ebd6cec7211343b719 (diff) | |
| download | gcc-bd0201b6c09dfd48d75005551be4c16ee252ba4c.tar.gz | |
PR 70687: Use wide_int in combine.c:change_zero_ext
PR 70687 reports a case where combine.c mishandles integer modes
wider than unsigned HOST_WIDE_INT. I don't have a testcase since
the PR is just pointing out the hole.
Also, I think a ZERO_EXTEND of a vector mode could in principle satisfy
the subreg condition but wouldn't be equivalent to an AND. E.g.:
(zero_extend:V4DI (subreg:V4SI (reg:V4DI R) 0))
Tested on x86_64-linux-gnu.
gcc/
PR rtl-optimization/70687
* combine.c (change_zero_ext): Check for scalar modes. Use wide_int
instead of unsigned HOST_WIDE_INT.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@235811 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/builtins.h')
0 files changed, 0 insertions, 0 deletions