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| author | Steven Bosscher <stevenb@suse.de> | 2005-01-31 21:14:44 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2005-01-31 21:14:44 +0000 |
| commit | 9ea888348fda5bbe3f33ec2b241d7adb1c94383b (patch) | |
| tree | 307f8c382d41080ae71e44f27304f20bcafe33d1 /gcc/recog.c | |
| parent | 75a3bd9d651df22415296c08a50f10869ec10d5a (diff) | |
| download | gcc-9ea888348fda5bbe3f33ec2b241d7adb1c94383b.zip gcc-9ea888348fda5bbe3f33ec2b241d7adb1c94383b.tar.gz gcc-9ea888348fda5bbe3f33ec2b241d7adb1c94383b.tar.bz2 | |
recog.c (constrain_operands): Only look for earlyclobber operand conflicts if an '&' constraint was seen.
* recog.c (constrain_operands): Only look for earlyclobber operand
conflicts if an '&' constraint was seen.
From-SVN: r94493
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 4dfdca1..28b2410 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -2233,6 +2233,7 @@ constrain_operands (int strict) do { + int seen_earlyclobber_at = -1; int opno; int lose = 0; funny_match_index = 0; @@ -2295,6 +2296,8 @@ constrain_operands (int strict) case '&': earlyclobber[opno] = 1; + if (seen_earlyclobber_at < 0) + seen_earlyclobber_at = opno; break; case '0': case '1': case '2': case '3': case '4': @@ -2543,8 +2546,10 @@ constrain_operands (int strict) /* See if any earlyclobber operand conflicts with some other operand. */ - if (strict > 0) - for (eopno = 0; eopno < recog_data.n_operands; eopno++) + if (strict > 0 && seen_earlyclobber_at >= 0) + for (eopno = seen_earlyclobber_at; + eopno < recog_data.n_operands; + eopno++) /* Ignore earlyclobber operands now in memory, because we would often report failure when we have two memory operands, one of which was formerly a REG. */ |