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| author | Kazu Hirata <kazu@cs.umass.edu> | 2003-03-31 19:06:29 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2003-03-31 19:06:29 +0000 |
| commit | ef3a7d56e900e4e4d6d97d025a368fd7075db4e6 (patch) | |
| tree | 87833c3b1bf2f56aaa162a52e577650274a7b1e5 | |
| parent | 5ccd517abe18dadd9fe668b1176d77f0ba2a3146 (diff) | |
| download | gcc-ef3a7d56e900e4e4d6d97d025a368fd7075db4e6.zip gcc-ef3a7d56e900e4e4d6d97d025a368fd7075db4e6.tar.gz gcc-ef3a7d56e900e4e4d6d97d025a368fd7075db4e6.tar.bz2 | |
* config/h8300/h8300.md (a peephole2): New.
From-SVN: r65098
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.md | 44 |
2 files changed, 46 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3035613..e02ab08 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2003-03-31 Kazu Hirata <kazu@cs.umass.edu> + + * config/h8300/h8300.md (a peephole2): New. + 2003-03-31 Michael Matz <matz@suse.de> * config/i386/i386.h (TARGET_FLT_EVAL_METHOD): Change 1 into 0. diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md index d0dbb1f..3b72379 100644 --- a/gcc/config/h8300/h8300.md +++ b/gcc/config/h8300/h8300.md @@ -4101,8 +4101,10 @@ ;; dead 0xffffff?? except -1 and -2 eq/ne xor.b and not.l ;; dead 0xffff??ff eq/ne xor.b and not.l ;; -;; dead 1 geu/ltu and.b and test -;; dead 3 geu/ltu and.b and test +;; dead 1 geu/ltu shlr.l +;; dead 3 (H8S) geu/ltu shlr.l +;; +;; dead 3 (H8/300H) geu/ltu and.b and test ;; dead 7 geu/ltu and.b and test ;; dead 15 geu/ltu and.b and test ;; dead 31 geu/ltu and.b and test @@ -4223,6 +4225,44 @@ (pc)))] "operands[4] = GEN_INT (INTVAL (operands[1]) ^ -1);") +;; Transform +;; +;; cmp.l #1,er0 +;; bhi .L1 +;; +;; into +;; +;; shlr.l er0 +;; bne .L1 + +(define_peephole2 + [(set (cc0) + (compare (match_operand:SI 0 "register_operand" "") + (match_operand:SI 1 "const_int_operand" ""))) + (set (pc) + (if_then_else (match_operator 2 "gtuleu_operator" + [(cc0) (const_int 0)]) + (label_ref (match_operand 3 "" "")) + (pc)))] + "(TARGET_H8300H || TARGET_H8300S) + && peep2_reg_dead_p (1, operands[0]) + && (INTVAL (operands[1]) == 1 + || (TARGET_H8300S && INTVAL (operands[1]) == 3))" + [(parallel [(set (match_dup 0) + (lshiftrt:SI (match_dup 0) + (match_dup 5))) + (clobber (scratch:QI))]) + (set (cc0) + (match_dup 0)) + (set (pc) + (if_then_else (match_dup 4) + (label_ref (match_dup 3)) + (pc)))] + "operands[4] = ((GET_CODE (operands[2]) == GTU) ? + gen_rtx_NE (VOIDmode, cc0_rtx, const0_rtx) : + gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx)); + operands[5] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));") + ;; Transform A <= 1 to (A & 0xfffffffe) == 0. (define_peephole2 |