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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-10-21 18:29:14 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-10-21 18:29:14 -0400 |
| commit | c8f6f18d84829f59cc51137e7e27cca9414dca9d (patch) | |
| tree | 751ff75e51f0b909c8586cf300a9d24e3d9c440d | |
| parent | 2fad984b37d66d7d85ffc8ef2d837991f59cc187 (diff) | |
| download | gcc-c8f6f18d84829f59cc51137e7e27cca9414dca9d.zip gcc-c8f6f18d84829f59cc51137e7e27cca9414dca9d.tar.gz gcc-c8f6f18d84829f59cc51137e7e27cca9414dca9d.tar.bz2 | |
(reg_unused_after): Ifdef out code for handling labels.
From-SVN: r10499
| -rw-r--r-- | gcc/config/sh/sh.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 597a7d3..5636d18 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -1892,14 +1892,21 @@ reg_unused_after (reg, insn) { code = GET_CODE (insn); +#if 0 + /* If this is a label that existed before reload, then the register + if dead here. However, if this is a label added by reorg, then + the register may still be live here. We can't tell the difference, + so we just ignore labels completely. */ if (code == CODE_LABEL) return 1; + /* else */ +#endif /* If this is a sequence, we must handle them all at once. We could have for instance a call that sets the target register, and a insn in a delay slot that uses the register. In this case, we must return 0. */ - else if (code == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE) + if (code == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE) { int i; int retval = 0; |