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| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-10-09 14:13:13 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-10-09 14:13:13 -0400 |
| commit | 014830a56db576f8fabdb74dedd312bf4b0d9423 (patch) | |
| tree | 9e3f79bdda9710fe6e183c8e07c15490391cbbd6 | |
| parent | 9d790a4f7376d202702a505f3199d221df73bbcc (diff) | |
| download | gcc-014830a56db576f8fabdb74dedd312bf4b0d9423.zip gcc-014830a56db576f8fabdb74dedd312bf4b0d9423.tar.gz gcc-014830a56db576f8fabdb74dedd312bf4b0d9423.tar.bz2 | |
(mark_target_live_regs): Fix bug in last change.
From-SVN: r2385
| -rw-r--r-- | gcc/reorg.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/gcc/reorg.c b/gcc/reorg.c index 869c79a..4a87e40 100644 --- a/gcc/reorg.c +++ b/gcc/reorg.c @@ -2171,20 +2171,10 @@ mark_target_live_regs (target, res) if (GET_CODE (PATTERN (insn)) == USE) { /* If INSN is a USE made by update_block, we care about the - underlying insn. Any registers set or referenced by the - underlying insn should be treated as if the insn were - located here without the USE. */ + underlying insn. Any registers set by the underlying insn + are live since the insn is being done somewhere else. */ if (GET_RTX_CLASS (GET_CODE (XEXP (PATTERN (insn), 0))) == 'i') - { - rtx inner = XEXP (PATTERN (insn), 0); - - mark_referenced_resources (inner, &needed, 1); - mark_set_resources (inner, &set, 0, 1); - - COPY_HARD_REG_SET (scratch, set.regs); - AND_COMPL_HARD_REG_SET (scratch, needed.regs); - AND_COMPL_HARD_REG_SET (res->regs, scratch); - } + mark_set_resources (XEXP (PATTERN (insn), 0), res, 0, 1); /* All other USE insns are to be ignored. */ continue; |