diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2014-01-27 17:33:39 +0100 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2014-01-27 09:33:39 -0700 |
| commit | 904e5ccd59800428a4beb46ef7cb20313d1f4e05 (patch) | |
| tree | 26d81ac85799658a9f470a135d72f105684f54b0 /gcc/expmed.h | |
| parent | 48b08b187f27bfe437479ae68a54508cb59251b5 (diff) | |
| download | gcc-904e5ccd59800428a4beb46ef7cb20313d1f4e05.zip gcc-904e5ccd59800428a4beb46ef7cb20313d1f4e05.tar.gz gcc-904e5ccd59800428a4beb46ef7cb20313d1f4e05.tar.bz2 | |
re PR bootstrap/59934 (Bootstrap fail since r206941: expmed.h:252:33: error: array subscript is above array bounds)
PR bootstrap/59934
* expmed.h (expmed_mode_index): Rework so that analysis and optimziers
know when the MODE_PARTIAL_INT and MODE_VECTOR_INT cases can never be
reached.
From-SVN: r207137
Diffstat (limited to 'gcc/expmed.h')
| -rw-r--r-- | gcc/expmed.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gcc/expmed.h b/gcc/expmed.h index 9681e41..4d01d1f 100644 --- a/gcc/expmed.h +++ b/gcc/expmed.h @@ -221,12 +221,21 @@ expmed_mode_index (enum machine_mode mode) case MODE_INT: return mode - MIN_MODE_INT; case MODE_PARTIAL_INT: - return mode - MIN_MODE_PARTIAL_INT + NUM_MODE_INT; + /* If there are no partial integer modes, help the compiler + to figure out this will never happen. See PR59934. */ + if (MIN_MODE_PARTIAL_INT != VOIDmode) + return mode - MIN_MODE_PARTIAL_INT + NUM_MODE_INT; + break; case MODE_VECTOR_INT: - return mode - MIN_MODE_VECTOR_INT + NUM_MODE_IP_INT; + /* If there are no vector integer modes, help the compiler + to figure out this will never happen. See PR59934. */ + if (MIN_MODE_VECTOR_INT != VOIDmode) + return mode - MIN_MODE_VECTOR_INT + NUM_MODE_IP_INT; + break; default: - gcc_unreachable (); + break; } + gcc_unreachable (); } /* Return a pointer to a boolean contained in EOC indicating whether |