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| author | kazu <kazu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-12 14:10:21 +0000 |
|---|---|---|
| committer | kazu <kazu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-12 14:10:21 +0000 |
| commit | 9eeb1a456f46ea3da90d2e9b702fa41a45cf3bf8 (patch) | |
| tree | 45992ba0cc317944e33f5c4a1fca6cdfea76c778 /gcc | |
| parent | d22462d6816f077f11b3dcd3b8304dc7443f93d8 (diff) | |
| download | ppe42-gcc-9eeb1a456f46ea3da90d2e9b702fa41a45cf3bf8.tar.gz ppe42-gcc-9eeb1a456f46ea3da90d2e9b702fa41a45cf3bf8.zip | |
* config/h8300/h8300.md (a peephole2): Don't handle 65535.
(two peephole2): New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@62764 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.md | 49 |
2 files changed, 52 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 52c1cd7d01a..b81e4c8419c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2003-02-12 Kazu Hirata <kazu@cs.umass.edu> + * config/h8300/h8300.md (a peephole2): Don't handle 65535. + (two peephole2): New. + +2003-02-12 Kazu Hirata <kazu@cs.umass.edu> + * config/h8300/h8300.md (several peephole2): Replace find_regno_note with peep2_reg_dead_p. diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index 5c412a7bab2..c9cd5f5aff6 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -3500,8 +3500,7 @@ || INTVAL (operands[1]) == 31 || INTVAL (operands[1]) == 63 || INTVAL (operands[1]) == 127 - || INTVAL (operands[1]) == 255 - || INTVAL (operands[1]) == 65535)" + || INTVAL (operands[1]) == 255)" [(set (match_dup 0) (and:SI (match_dup 0) (match_dup 5))) @@ -3516,6 +3515,52 @@ gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx)); operands[5] = GEN_INT (~INTVAL (operands[1]));") +;; Transform A <= 255 to (A & 0xff00) == 0. + +(define_peephole2 + [(set (cc0) + (compare:HI (match_operand:HI 0 "register_operand" "") + (const_int 255))) + (set (pc) + (if_then_else (match_operator 1 "gtuleu_operator" + [(cc0) (const_int 0)]) + (label_ref (match_operand 2 "" "")) + (pc)))] + "TARGET_H8300H || TARGET_H8300S" + [(set (cc0) + (and:HI (match_dup 0) + (const_int -256))) + (set (pc) + (if_then_else (match_dup 4) + (label_ref (match_dup 2)) + (pc)))] + "operands[4] = ((GET_CODE (operands[1]) == GTU) ? + gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) : + gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));") + +;; Transform A <= 65535 to (A & 0xffff0000) == 0. + +(define_peephole2 + [(set (cc0) + (compare:SI (match_operand:SI 0 "register_operand" "") + (const_int 65535))) + (set (pc) + (if_then_else (match_operator 1 "gtuleu_operator" + [(cc0) (const_int 0)]) + (label_ref (match_operand 2 "" "")) + (pc)))] + "TARGET_H8300H || TARGET_H8300S" + [(set (cc0) + (and:SI (match_dup 0) + (const_int -65536))) + (set (pc) + (if_then_else (match_dup 4) + (label_ref (match_dup 2)) + (pc)))] + "operands[4] = ((GET_CODE (operands[1]) == GTU) ? + gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) : + gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));") + ;; Narrow the mode of testing if possible. (define_peephole2 |
