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| author | Kazu Hirata <kazu@cs.umass.edu> | 2003-03-06 15:14:37 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2003-03-06 15:14:37 +0000 |
| commit | 0135f3437aa4971252377aaaf7b86e8fdc3b8ecd (patch) | |
| tree | d89d9f28270a2d763ca393487a6cc3bed2246514 /gcc | |
| parent | 8a6393df6877b5a49a0d3248003d63453df11b3d (diff) | |
| download | gcc-0135f3437aa4971252377aaaf7b86e8fdc3b8ecd.zip gcc-0135f3437aa4971252377aaaf7b86e8fdc3b8ecd.tar.gz gcc-0135f3437aa4971252377aaaf7b86e8fdc3b8ecd.tar.bz2 | |
* config/h8300/h8300.md (a new peephole2): New.
From-SVN: r63892
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.md | 19 |
2 files changed, 23 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6a56569..d6264c1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2003-03-06 Kazu Hirata <kazu@cs.umass.edu> + + * config/h8300/h8300.md (a new peephole2): New. + Thu Mar 6 14:20:15 CET 2003 Jan Hubicka <jh@suse.cz> * cgraph.c (cgraph_node): Do not confuse nested functions and methods. diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index ed154b7..518c98c 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -3584,6 +3584,25 @@ "operands[2] = gen_lowpart (QImode, operands[0]); operands[3] = gen_lowpart (QImode, operands[1]);") +(define_peephole2 + [(set (match_operand:SI 0 "register_operand" "") + (match_operand:SI 1 "memory_operand" "")) + (set (match_dup 0) + (and:SI (match_dup 0) + (match_operand:SI 2 "const_int_operand" "")))] + "(TARGET_H8300H || TARGET_H8300S) + && !reg_overlap_mentioned_p (operands[0], operands[1]) + && !(GET_CODE (operands[1]) == MEM && MEM_VOLATILE_P (operands[1])) + && (INTVAL (operands[2]) & ~0xffff) == 0 + && INTVAL (operands[2]) != 255" + [(set (match_dup 3) + (match_dup 4)) + (set (match_dup 0) + (and:SI (match_dup 0) + (match_dup 2)))] + "operands[3] = gen_lowpart (HImode, operands[0]); + operands[4] = gen_lowpart (HImode, operands[1]);") + ;; (compare (reg:SI) (const_int)) takes 6 bytes, so we try to achieve ;; the equivalent with shorter sequences. Here is the summary. Cases ;; are grouped for each define_peephole2. |