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| author | rearnsha <rearnsha@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-09-21 14:39:28 +0000 |
|---|---|---|
| committer | rearnsha <rearnsha@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-09-21 14:39:28 +0000 |
| commit | ab33a25a2d13147b0d1bb5a167fdb79c264b8f41 (patch) | |
| tree | 1361fc790de66f92cceffd8d029e83579c26a96d /gcc/cfgcleanup.c | |
| parent | e4bf866d3b6dcde0717eea60e420ff147a7b0304 (diff) | |
| download | gcc-ab33a25a2d13147b0d1bb5a167fdb79c264b8f41.tar.gz | |
* cfgcleanup.c (flow_find_cross_jump): Delete any REG_EQUAL notes
that would be invalid after a merge.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45727 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 314d9f401cf..a3ddcac872e 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -583,6 +583,22 @@ flow_find_cross_jump (mode, bb1, bb2, f1, f2) /* Don't begin a cross-jump with a USE or CLOBBER insn. */ if (GET_CODE (p1) != USE && GET_CODE (p1) != CLOBBER) { + /* If the merged insns have different REG_EQUAL notes, then + remove them. */ + rtx equiv1 = find_reg_equal_equiv_note (i1); + rtx equiv2 = find_reg_equal_equiv_note (i2); + + if (equiv1 && !equiv2) + remove_note (i1, equiv1); + else if (!equiv1 && equiv2) + remove_note (i2, equiv2); + else if (equiv1 && equiv2 + && !rtx_equal_p (XEXP (equiv1, 0), XEXP (equiv2, 0))) + { + remove_note (i1, equiv1); + remove_note (i2, equiv2); + } + afterlast1 = last1, afterlast2 = last2; last1 = i1, last2 = i2; ninsns++; |