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| author | Richard Stallman <rms@gnu.org> | 1992-08-18 16:59:12 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-08-18 16:59:12 +0000 |
| commit | 89f1c7f2578fb5b069a4eb9ca676b4e6b7503ca1 (patch) | |
| tree | e8225a7520a2be4ee563ef446c244c9d6afb0d10 /gcc | |
| parent | 60d001174940244eb699c15cd14450306df9900d (diff) | |
| download | gcc-89f1c7f2578fb5b069a4eb9ca676b4e6b7503ca1.zip gcc-89f1c7f2578fb5b069a4eb9ca676b4e6b7503ca1.tar.gz gcc-89f1c7f2578fb5b069a4eb9ca676b4e6b7503ca1.tar.bz2 | |
(simplify_comparison): Rearrange conditional in SUBREG case.
From-SVN: r1886
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index e55b33d..f23ba1b 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7544,10 +7544,12 @@ simplify_comparison (code, pop0, pop1) break; case SUBREG: - /* If the inner mode is smaller and we are extracting the low - part, we can treat the SUBREG as if it were a ZERO_EXTEND. */ - if (! subreg_lowpart_p (op0) - || GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (op0))) >= mode_width) + /* If the inner mode is narrower and we are extracting the low part, + we can treat the SUBREG as if it were a ZERO_EXTEND. */ + if (subreg_lowpart_p (op0) + && GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (op0))) < mode_width) + /* Fall through */ ; + else break; /* ... fall through ... */ |