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| author | Eric Botcazou <ebotcazou@adacore.com> | 2008-11-21 21:19:34 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2008-11-21 21:19:34 +0000 |
| commit | 0e51e769b52cb4c91339a0eef5fa6a70c0ee2dde (patch) | |
| tree | a1ca0a56e67cbb52b3a6103157469400ab09d65a /gcc | |
| parent | 015e1120e863d3273513a5f9db1a85119b4eb701 (diff) | |
| download | gcc-0e51e769b52cb4c91339a0eef5fa6a70c0ee2dde.zip gcc-0e51e769b52cb4c91339a0eef5fa6a70c0ee2dde.tar.gz gcc-0e51e769b52cb4c91339a0eef5fa6a70c0ee2dde.tar.bz2 | |
caller-save.c (insert_one_insn): Take into account REG_INC notes for the liveness computation of the new insn.
* caller-save.c (insert_one_insn): Take into account REG_INC notes
for the liveness computation of the new insn.
From-SVN: r142099
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/caller-save.c | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fc1f691..1f0b3fc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-11-21 Eric Botcazou <ebotcazou@adacore.com> + + * caller-save.c (insert_one_insn): Take into account REG_INC notes + for the liveness computation of the new insn. + 2008-11-21 DJ Delorie <dj@redhat.com> * config/stormy16/stormy16.md (movqi_internal, movhi_internal): diff --git a/gcc/caller-save.c b/gcc/caller-save.c index 2d0925a..002f760 100644 --- a/gcc/caller-save.c +++ b/gcc/caller-save.c @@ -1216,10 +1216,12 @@ insert_one_insn (struct insn_chain *chain, int before_p, int code, rtx pat) /* ??? It would be nice if we could exclude the already / still saved registers from the live sets. */ COPY_REG_SET (&new_chain->live_throughout, &chain->live_throughout); - /* Registers that die in CHAIN->INSN still live in the new insn. */ + /* Registers that die in CHAIN->INSN still live in the new insn. + Likewise for those which are autoincremented or autodecremented. */ for (link = REG_NOTES (chain->insn); link; link = XEXP (link, 1)) { - if (REG_NOTE_KIND (link) == REG_DEAD) + enum reg_note kind = REG_NOTE_KIND (link); + if (kind == REG_DEAD || kind == REG_INC) { rtx reg = XEXP (link, 0); int regno, i; |