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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-12 11:54:33 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-12 11:54:33 +0000 |
| commit | ca88a6eac253799b7df0d9b8c26c6a646dac5f13 (patch) | |
| tree | 16b23a19fb0e88769f1641dcb70af0e8ffd96569 /gcc/var-tracking.c | |
| parent | c6641d2373ef7cf508914fc6dc1669499593b2da (diff) | |
| download | gcc-ca88a6eac253799b7df0d9b8c26c6a646dac5f13.tar.gz | |
PR debug/48967
* var-tracking.c (use_narrower_mode_test) <case REG>: Return 1
if validate_subreg fails.
* g++.dg/opt/pr48967.C: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@173701 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/var-tracking.c')
| -rw-r--r-- | gcc/var-tracking.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 90411123a69..278f546a860 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -745,6 +745,10 @@ use_narrower_mode_test (rtx *loc, void *data) case REG: if (cselib_lookup (*loc, GET_MODE (SUBREG_REG (subreg)), 0, VOIDmode)) return 1; + if (!validate_subreg (GET_MODE (subreg), GET_MODE (*loc), + *loc, subreg_lowpart_offset (GET_MODE (subreg), + GET_MODE (*loc)))) + return 1; return -1; case PLUS: case MINUS: |