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| author | mmitchel <mmitchel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-05-25 23:43:43 +0000 |
|---|---|---|
| committer | mmitchel <mmitchel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-05-25 23:43:43 +0000 |
| commit | 4642b20509ae69830c44ffc3f59d9b86088c7fdb (patch) | |
| tree | 6156335a45a8824c4127a4a8fb96fa8c5f78b50c /gcc/resource.c | |
| parent | 0ce25b06293a6daa30df18c6745b28d893325fff (diff) | |
| download | gcc-4642b20509ae69830c44ffc3f59d9b86088c7fdb.tar.gz | |
* except.h (can_throw): Declare it.
* except.c (can_throw): Give it external linkage.
* resource.c (find_dead_or_set_registers): Use can_throw.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@34178 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/resource.c')
| -rw-r--r-- | gcc/resource.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/resource.c b/gcc/resource.c index 23f5e0e4ead..d84fabeee1d 100644 --- a/gcc/resource.c +++ b/gcc/resource.c @@ -422,6 +422,14 @@ find_dead_or_set_registers (target, res, jump_target, jump_count, set, needed) rtx this_jump_insn = insn; next = NEXT_INSN (insn); + + /* If this instruction can throw an exception, then we don't + know where we might end up next. That means that we have to + assume that whatever we have already marked as live really is + live. */ + if (can_throw (insn)) + break; + switch (GET_CODE (insn)) { case CODE_LABEL: |