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| author | Christian Bruel <chrbr@gcc.gnu.org> | 2009-09-15 15:15:51 +0200 |
|---|---|---|
| committer | Christian Bruel <chrbr@gcc.gnu.org> | 2009-09-15 15:15:51 +0200 |
| commit | af94453d356ddfd1087c505442e6c74e7b8974f7 (patch) | |
| tree | 1d5dc639c5f8dc99a27155272a568a39dae7b788 /gcc/regrename.c | |
| parent | 384ed84dc00e62af7bb69497fd9c34225edf9b55 (diff) | |
| download | gcc-af94453d356ddfd1087c505442e6c74e7b8974f7.zip gcc-af94453d356ddfd1087c505442e6c74e7b8974f7.tar.gz gcc-af94453d356ddfd1087c505442e6c74e7b8974f7.tar.bz2 | |
Update REG_DEAD notes
From-SVN: r151720
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index 03aba80..68d0874 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -376,11 +376,26 @@ do_replace (struct du_chain *chain, int reg) INSN_VAR_LOCATION_LOC (chain->insn) = gen_rtx_UNKNOWN_VAR_LOC (); else { + rtx note; + *chain->loc = gen_raw_REG (GET_MODE (*chain->loc), reg); if (regno >= FIRST_PSEUDO_REGISTER) ORIGINAL_REGNO (*chain->loc) = regno; REG_ATTRS (*chain->loc) = attr; REG_POINTER (*chain->loc) = reg_ptr; + + for (note = REG_NOTES (chain->insn); note; note = XEXP (note, 1)) + { + if (REG_NOTE_KIND (note) == REG_DEAD + || REG_NOTE_KIND (note) == REG_UNUSED) + { + rtx reg = XEXP (note, 0); + gcc_assert (HARD_REGISTER_P (reg)); + + if (REGNO (reg) == base_regno) + XEXP (note, 0) = *chain->loc; + } + } } df_insn_rescan (chain->insn); |