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| author | Paul Brook <paul@codesourcery.com> | 2008-09-01 12:28:06 +0000 |
|---|---|---|
| committer | Paul Brook <pbrook@gcc.gnu.org> | 2008-09-01 12:28:06 +0000 |
| commit | 756f763b0bae99a148db1b2b9dfb11bc51b384f0 (patch) | |
| tree | 799a4e91817b9b5e59ce869a6d7e82d432813e08 /gcc/config | |
| parent | 840018d9d1c29fb551eaee876c930d39cd69c957 (diff) | |
| download | gcc-756f763b0bae99a148db1b2b9dfb11bc51b384f0.zip gcc-756f763b0bae99a148db1b2b9dfb11bc51b384f0.tar.gz gcc-756f763b0bae99a148db1b2b9dfb11bc51b384f0.tar.bz2 | |
arm.c (arm_no_early_mul_dep): Handle multiply-subtract.
2008-09-01 Paul Brook <paul@codesourcery.com>
gcc/
* config/arm/arm.c (arm_no_early_mul_dep): Handle multiply-subtract.
From-SVN: r139860
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/arm/arm.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 6a4b3ef..d22b4fe 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -18235,8 +18235,15 @@ arm_no_early_mul_dep (rtx producer, rtx consumer) op = XVECEXP (op, 0, 0); op = XEXP (op, 1); - return (GET_CODE (op) == PLUS - && !reg_overlap_mentioned_p (value, XEXP (op, 0))); + if (GET_CODE (op) == PLUS || GET_CODE (op) == MINUS) + { + if (GET_CODE (XEXP (op, 0)) == MULT) + return !reg_overlap_mentioned_p (value, XEXP (op, 0)); + else + return !reg_overlap_mentioned_p (value, XEXP (op, 1)); + } + + return 0; } /* We can't rely on the caller doing the proper promotion when |