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| author | Jeff Law <jeffreyalaw@gmail.com> | 2021-06-08 10:10:23 -0400 |
|---|---|---|
| committer | Jeff Law <jeffreyalaw@gmail.com> | 2021-06-08 10:13:41 -0400 |
| commit | 941aa24ca9553b422dba6e267448ddd952bc52d1 (patch) | |
| tree | d94901dc7f58cf4ce4f1533b9f0cf687056eccc3 /gcc/config/h8300 | |
| parent | d319517e809ee50496db29e552f86a83a14c837c (diff) | |
| download | gcc-941aa24ca9553b422dba6e267448ddd952bc52d1.zip gcc-941aa24ca9553b422dba6e267448ddd952bc52d1.tar.gz gcc-941aa24ca9553b422dba6e267448ddd952bc52d1.tar.bz2 | |
Further improve redundant test/compare removal on the H8
gcc/
* config/h8300/logical.md (andqi3_1): Move BCLR case into define_insn_and_split.
Create length attribute on define_insn_and_split. Only split for cases which we
know will use AND.
(andqi3_1<cczn>): Renamed from andqi3_1_clobber_flags. Only handle AND here and
fix length computation.
(b<code><mode>msx): Combine QImode and HImode H8/SX patterns using iterator.
Diffstat (limited to 'gcc/config/h8300')
| -rw-r--r-- | gcc/config/h8300/logical.md | 41 |
1 files changed, 16 insertions, 25 deletions
diff --git a/gcc/config/h8300/logical.md b/gcc/config/h8300/logical.md index 34cf74e..fae3c7c 100644 --- a/gcc/config/h8300/logical.md +++ b/gcc/config/h8300/logical.md @@ -62,22 +62,21 @@ (match_operand:QI 2 "h8300_src_operand" "Y0,rn")))] "register_operand (operands[0], QImode) || single_zero_operand (operands[2], QImode)" - "#" - "&& reload_completed" + "bclr %W2,%R0" + "&& reload_completed && !single_zero_operand (operands[2], QImode)" [(parallel [(set (match_dup 0) (and:QI (match_dup 1) (match_dup 2))) - (clobber (reg:CC CC_REG))])]) + (clobber (reg:CC CC_REG))])] + "" + [(set_attr "length" "8,2")]) -(define_insn "andqi3_1_clobber_flags" - [(set (match_operand:QI 0 "bit_operand" "=U,r") - (and:QI (match_operand:QI 1 "bit_operand" "%0,0") - (match_operand:QI 2 "h8300_src_operand" "Y0,rn"))) +(define_insn "*andqi3_1<cczn>" + [(set (match_operand:QI 0 "register_operand" "=r") + (and:QI (match_operand:QI 1 "register_operand" "%0") + (match_operand:QI 2 "h8300_src_operand" "rn"))) (clobber (reg:CC CC_REG))] - "register_operand (operands[0], QImode) - || single_zero_operand (operands[2], QImode)" - "@ - bclr %W2,%R0 - and %X2,%X0" - [(set_attr "length" "2,8")]) + "" + "and %X2,%X0" + [(set_attr "length" "2")]) (define_insn_and_split "*andor<mode>3" [(set (match_operand:QHSI 0 "register_operand" "=r") @@ -166,22 +165,14 @@ ;; OR/XOR INSTRUCTIONS ;; ---------------------------------------------------------------------- -(define_insn "b<code>qi_msx" - [(set (match_operand:QI 0 "bit_register_indirect_operand" "=WU") - (ors:QI (match_operand:QI 1 "bit_register_indirect_operand" "%0") - (match_operand:QI 2 "single_one_operand" "Y2")))] +(define_insn "b<code><mode>_msx" + [(set (match_operand:QHI 0 "bit_register_indirect_operand" "=WU") + (ors:QHI (match_operand:QHI 1 "bit_register_indirect_operand" "%0") + (match_operand:QHI 2 "single_one_operand" "Y2")))] "TARGET_H8300SX && rtx_equal_p (operands[0], operands[1])" { return <CODE> == IOR ? "bset\\t%V2,%0" : "bnot\\t%V2,%0"; } [(set_attr "length" "8")]) -(define_insn "b<code>hi_msx" - [(set (match_operand:HI 0 "bit_register_indirect_operand" "=m") - (ors:HI (match_operand:HI 1 "bit_register_indirect_operand" "%0") - (match_operand:HI 2 "single_one_operand" "Y2")))] - "TARGET_H8300SX" - { return <CODE> == IOR ? "bset\\t%V2,%0" : "bnot\\t%V2,%0"; } - [(set_attr "length" "8")]) - (define_insn_and_split "<code>qi3_1" [(set (match_operand:QI 0 "bit_operand" "=U,rQ") (ors:QI (match_operand:QI 1 "bit_operand" "%0,0") |