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| author | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-05-12 13:54:33 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-05-12 13:54:33 +0200 |
| commit | 2c703f3a6a2a283318a0678fc8a5eba27b6663df (patch) | |
| tree | 16b23a19fb0e88769f1641dcb70af0e8ffd96569 /gcc/var-tracking.c | |
| parent | 35d828c58ba757ef44380f1eb6a5a4d1c325da6b (diff) | |
| download | gcc-2c703f3a6a2a283318a0678fc8a5eba27b6663df.zip gcc-2c703f3a6a2a283318a0678fc8a5eba27b6663df.tar.gz gcc-2c703f3a6a2a283318a0678fc8a5eba27b6663df.tar.bz2 | |
re PR debug/48967 (ICE during use_narrower_mode)
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.
From-SVN: r173701
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 9041112..278f546 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: |