diff options
| author | Jeff Law <jeffreyalaw@gmail.com> | 2021-07-08 17:09:36 -0400 |
|---|---|---|
| committer | Jeff Law <jeffreyalaw@gmail.com> | 2021-07-08 17:09:36 -0400 |
| commit | b14ac7b29c9a05c94f62fe065c219bbaa83653db (patch) | |
| tree | 47d9f0836b43b9cbfd405b98d4666429d136efac /gcc | |
| parent | 763121ccd908f52bc666f277ea2cf42110b3aad9 (diff) | |
| download | gcc-b14ac7b29c9a05c94f62fe065c219bbaa83653db.zip gcc-b14ac7b29c9a05c94f62fe065c219bbaa83653db.tar.gz gcc-b14ac7b29c9a05c94f62fe065c219bbaa83653db.tar.bz2 | |
Further improvements to H8 variable shift patterns
gcc/
* config/h8300/shiftrotate.md (variable shifts): Expose condition
code handling for the test before the loop.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/h8300/shiftrotate.md | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/config/h8300/shiftrotate.md b/gcc/config/h8300/shiftrotate.md index 485303c..d3aa6be 100644 --- a/gcc/config/h8300/shiftrotate.md +++ b/gcc/config/h8300/shiftrotate.md @@ -377,8 +377,10 @@ (clobber (reg:CC CC_REG))] "epilogue_completed && find_regno_note (insn, REG_DEAD, REGNO (operands[1]))" - [(set (pc) - (if_then_else (le (match_dup 1) (const_int 0)) + [(set (reg:CCZN CC_REG) + (compare:CCZN (match_dup 1) (const_int 0))) + (set (pc) + (if_then_else (le (reg:CCZN CC_REG) (const_int 0)) (label_ref (match_dup 5)) (pc))) (match_dup 4) @@ -411,10 +413,12 @@ (clobber (reg:CC CC_REG))] "epilogue_completed && !find_regno_note (insn, REG_DEAD, REGNO (operands[1]))" - [(set (match_dup 3) - (match_dup 1)) + [(parallel + [(set (reg:CCZN CC_REG) + (compare:CCZN (match_dup 1) (const_int 0))) + (set (match_dup 3) (match_dup 1))]) (set (pc) - (if_then_else (le (match_dup 3) (const_int 0)) + (if_then_else (le (reg:CCZN CC_REG) (const_int 0)) (label_ref (match_dup 5)) (pc))) (match_dup 4) |