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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-05-16 16:21:39 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-05-16 16:21:39 -0400 |
| commit | 89861c38672f0615c9c2c104327a428fb6a997f6 (patch) | |
| tree | 5f2d31d057112eec91a33ab653472ae31119150b /gcc | |
| parent | 4ac0968744362763aa58b43608edb0c7997cb35b (diff) | |
| download | gcc-89861c38672f0615c9c2c104327a428fb6a997f6.zip gcc-89861c38672f0615c9c2c104327a428fb6a997f6.tar.gz gcc-89861c38672f0615c9c2c104327a428fb6a997f6.tar.bz2 | |
(try_pre_increment_1): Don't try to create a pre-increment expression
if the register dies in the succeeding insn.
From-SVN: r7308
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/flow.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -2516,6 +2516,9 @@ try_pre_increment_1 (insn) rtx y = reg_next_use[regno]; if (y != 0 && BLOCK_NUM (y) == BLOCK_NUM (insn) + /* Don't do this if the reg dies, or gets set in y; a standard addressing + mode would be better. */ + && ! dead_or_set_p (y, SET_DEST (x)) && try_pre_increment (y, SET_DEST (PATTERN (insn)), amount)) { |