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| author | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-11-08 23:40:15 +0000 |
|---|---|---|
| committer | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-11-08 23:40:15 +0000 |
| commit | 77f78a8f6fa5f3134da3941b5fce1e2c9a577bf5 (patch) | |
| tree | 7a800f5676cc63224fbedcbb03bdb90f30059351 /gcc/reload1.c | |
| parent | 8ca560c1488f199ef9a8a9ce7b74f8ef22bd95b6 (diff) | |
| download | gcc-77f78a8f6fa5f3134da3941b5fce1e2c9a577bf5.tar.gz | |
* reload1.c (reload): Don't delete equiv insn if can throw.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@46866 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index 165573bdf8d..ffc80de8e6a 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -1071,9 +1071,16 @@ reload (first, global) for (list = reg_equiv_init[i]; list; list = XEXP (list, 1)) { rtx equiv_insn = XEXP (list, 0); - if (GET_CODE (equiv_insn) == NOTE) - continue; - if (reg_set_p (regno_reg_rtx[i], PATTERN (equiv_insn))) + + /* If we already deleted the insn or if it may trap, we can't + delete it. The latter case shouldn't happen, but can + if an insn has a variable address, gets a REG_EH_REGION + note added to it, and then gets converted into an load + from a constant address. */ + if (GET_CODE (equiv_insn) == NOTE + || can_throw_internal (equiv_insn)) + ; + else if (reg_set_p (regno_reg_rtx[i], PATTERN (equiv_insn))) delete_dead_insn (equiv_insn); else { |