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(parent: 7d17b34) | patch
rtl.h (enum reg_note): Add REG_MAYBE_DEAD.
authorGeoff Keating <geoffk@cygnus.com>
Wed, 2 Aug 2000 00:53:59 +0000 (00:53 +0000)
committerGeoffrey Keating <geoffk@gcc.gnu.org>
Wed, 2 Aug 2000 00:53:59 +0000 (00:53 +0000)
commit8cd8f856b33bbd6c6627eb0a18e34b046e2163f1
tree51e7cfa73194f407e18d5c607f8f9f28b8c01196tree
parent7d17b34de55c8cd8d83581036f8e87fae492db13commit | diff
rtl.h (enum reg_note): Add REG_MAYBE_DEAD.

* rtl.h (enum reg_note): Add REG_MAYBE_DEAD.
* rtl.c (reg_note_name): Add REG_MAYBE_DEAD.
* flow.c (propagate_one_insn): Allow deletion of prologue/epilogue
insns if they have a REG_MAYBE_DEAD note attached.
* config/rs6000/rs6000.c (rs6000_maybe_dead): New function.
(rs6000_emit_load_toc_table): TOC loads may go dead.

From-SVN: r35414
gcc/ChangeLog diff | blob | history
gcc/config/rs6000/rs6000.c diff | blob | history
gcc/flow.c diff | blob | history
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gcc/rtl.h diff | blob | history