diff options
| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-08-17 07:36:39 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-08-17 07:36:39 -0400 |
| commit | a73f9fc940405d5f82345a726a5e8a6e071dc418 (patch) | |
| tree | 91c0fcb2faad104061ba17418b678cca0b5eec62 | |
| parent | b8eb43a245a976d1e97f5afecdb0428867c68271 (diff) | |
| download | gcc-a73f9fc940405d5f82345a726a5e8a6e071dc418.zip gcc-a73f9fc940405d5f82345a726a5e8a6e071dc418.tar.gz gcc-a73f9fc940405d5f82345a726a5e8a6e071dc418.tar.bz2 | |
(jump_optimize): Allow SUBREG in many places where REG is allowed.
From-SVN: r1872
| -rw-r--r-- | gcc/jump.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -699,6 +699,7 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) && GET_CODE (PATTERN (temp2)) == SET && rtx_equal_p (SET_DEST (PATTERN (temp2)), temp1) && (GET_CODE (SET_SRC (PATTERN (temp2))) == REG + || GET_CODE (SET_SRC (PATTERN (temp2))) == SUBREG || CONSTANT_P (SET_SRC (PATTERN (temp2)))) && (REG_NOTES (temp2) == 0 || ((REG_NOTE_KIND (REG_NOTES (temp2)) == REG_EQUAL @@ -830,6 +831,7 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) #endif && GET_MODE_CLASS (GET_MODE (temp1)) == MODE_INT && (GET_CODE (temp2 = SET_SRC (PATTERN (temp))) == REG + || GET_CODE (temp2) == SUBREG || GET_CODE (temp2) == CONST_INT) /* Allow either form, but prefer the former if both apply. */ && (((temp3 = reg_set_last (temp1, insn)) != 0 @@ -838,6 +840,7 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan) && REGNO (temp3) >= FIRST_PSEUDO_REGISTER #endif ) + || GET_CODE (temp3) == SUBREG || GET_CODE (temp3) == CONST_INT)) /* Make the latter case look like x = x; if (...) x = 0; */ || ((temp3 = temp1, BRANCH_COST >= 2) |