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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-12-16 06:44:16 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-12-16 06:44:16 -0500 |
| commit | e2cce0cf908143d436dbcc16ce5f81a49845e893 (patch) | |
| tree | 4fc1a724309cbf32aa5292c6201c5e169fd1710d /gcc | |
| parent | 6060a79633cdde2801b51dbef337d0ce675b9950 (diff) | |
| download | gcc-e2cce0cf908143d436dbcc16ce5f81a49845e893.zip gcc-e2cce0cf908143d436dbcc16ce5f81a49845e893.tar.gz gcc-e2cce0cf908143d436dbcc16ce5f81a49845e893.tar.bz2 | |
(distribute_notes): When output an insn to hold a REG_DEAD note,
update basic_block_head if necessary.
From-SVN: r8658
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index f7415ae..fb82ea8 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -10576,9 +10576,16 @@ distribute_notes (notes, from_insn, i3, i2, elim_i2, elim_i1) put the death node there. This prevents problems with call-state tracking in caller-save.c. */ if (REG_NOTE_KIND (note) == REG_DEAD && place == 0 && tem != 0) - place - = emit_insn_after (gen_rtx (USE, VOIDmode, XEXP (note, 0)), - tem); + { + place + = emit_insn_after (gen_rtx (USE, VOIDmode, XEXP (note, 0)), + tem); + + /* If this insn was emitted between blocks, then update + basic_block_head of the current block to include it. */ + if (basic_block_end[this_basic_block - 1] == tem) + basic_block_head[this_basic_block] = place; + } } /* If the register is set or already dead at PLACE, we needn't do |