diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/recog.c | 9 |
2 files changed, 12 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7591aec..76e28d1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-01-31 Steven Bosscher <stevenb@suse.de> + + * recog.c (constrain_operands): Only look for earlyclobber operand + conflicts if an '&' constraint was seen. + 2005-01-31 Marc Espie <espie@openbsd.org> * config.gcc: Don't include embedded systems fragment, switches default 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. */ |