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| author | J"orn Rennecke <joern.rennecke@st.com> | 2005-09-23 12:05:56 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2005-09-23 13:05:56 +0100 |
| commit | 9617ccfdc47aeb8e03f7c643df68bde7b06abcdd (patch) | |
| tree | 23b5a8404a7780586596776a9272a0da25116014 | |
| parent | a9305dcbcbe36527b0d4213fd4e71b56d1c5105d (diff) | |
| download | gcc-9617ccfdc47aeb8e03f7c643df68bde7b06abcdd.zip gcc-9617ccfdc47aeb8e03f7c643df68bde7b06abcdd.tar.gz gcc-9617ccfdc47aeb8e03f7c643df68bde7b06abcdd.tar.bz2 | |
re PR rtl-optimization/23837 (Wrong code with REG_NO_CONFLICT notes (caused by combine))
PR rtl-optimization/23837
* optabs.c (no_conflict_move_test): Don't set must_stay for a
clobber / clobber match between dest and p->first.
From-SVN: r104562
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/optabs.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index df18329..db68f2a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -3,6 +3,10 @@ * final.c (insn_default_length, insn_min_length): In !HAVE_ATTR_length case, define as macros. + PR rtl-optimization/23837 + * optabs.c (no_conflict_move_test): Don't set must_stay for a + clobber / clobber match between dest and p->first. + 2005-09-22 Ranjit Mathew <rmathew@gcc.gnu.org> * doc/install.texi: Update URL for Jacks. diff --git a/gcc/optabs.c b/gcc/optabs.c index bcb11b5..5da604d 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3021,7 +3021,8 @@ no_conflict_move_test (rtx dest, rtx set, void *p0) return; /* If this insn sets / clobbers a register that feeds one of the insns already in the list, this insn has to stay too. */ - else if (reg_mentioned_p (dest, PATTERN (p->first)) + else if (reg_overlap_mentioned_p (dest, PATTERN (p->first)) + || (CALL_P (p->first) && (find_reg_fusage (p->first, USE, dest))) || reg_used_between_p (dest, p->first, p->insn) /* Likewise if this insn depends on a register set by a previous insn in the list. */ |