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Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.11.2 To: GCC Patches Cc: Max Filippov From: Takayuki 'January June' Suwa Subject: [PATCH 2/3 v2] xtensa: Add 'adddi3' and 'subdi3' insn patterns Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit References: <95b8b130-caef-12c8-b247-25ec7dbf0ac3.ref@yahoo.co.jp> X-Spam-Status: No, score=-13.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,GIT_PATCH_0,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Resubmitting the correct one due to a mistake in merging order of fixes. --- More optimized than the default RTL generation. gcc/ChangeLog: * config/xtensa/xtensa.md (adddi3, subdi3): New RTL generation patterns implemented according to the instruc- tion idioms described in the Xtensa ISA reference manual (p. 600). --- gcc/config/xtensa/xtensa.md | 52 +++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md index eda1353894b..6882baaedfd 100644 --- a/gcc/config/xtensa/xtensa.md +++ b/gcc/config/xtensa/xtensa.md @@ -190,6 +190,32 @@ (set_attr "mode" "SI") (set_attr "length" "3")]) +(define_expand "adddi3" + [(set (match_operand:DI 0 "register_operand") + (plus:DI (match_operand:DI 1 "register_operand") + (match_operand:DI 2 "register_operand")))] + "" +{ + rtx lo_dest, hi_dest, lo_op0, hi_op0, lo_op1, hi_op1; + rtx_code_label *label; + lo_dest = gen_lowpart (SImode, operands[0]); + hi_dest = gen_highpart (SImode, operands[0]); + lo_op0 = gen_lowpart (SImode, operands[1]); + hi_op0 = gen_highpart (SImode, operands[1]); + lo_op1 = gen_lowpart (SImode, operands[2]); + hi_op1 = gen_highpart (SImode, operands[2]); + if (rtx_equal_p (lo_dest, lo_op1)) + FAIL; + emit_clobber (operands[0]); + emit_insn (gen_addsi3 (lo_dest, lo_op0, lo_op1)); + emit_insn (gen_addsi3 (hi_dest, hi_op0, hi_op1)); + emit_cmp_and_jump_insns (lo_dest, lo_op1, GEU, const0_rtx, + SImode, true, label = gen_label_rtx ()); + emit_insn (gen_addsi3 (hi_dest, hi_dest, const1_rtx)); + emit_label (label); + DONE; +}) + (define_insn "addsf3" [(set (match_operand:SF 0 "register_operand" "=f") (plus:SF (match_operand:SF 1 "register_operand" "%f") @@ -237,6 +263,32 @@ (const_int 5) (const_int 6)))]) +(define_expand "subdi3" + [(set (match_operand:DI 0 "register_operand") + (minus:DI (match_operand:DI 1 "register_operand") + (match_operand:DI 2 "register_operand")))] + "" +{ + rtx lo_dest, hi_dest, lo_op0, hi_op0, lo_op1, hi_op1; + rtx_code_label *label; + lo_dest = gen_lowpart (SImode, operands[0]); + hi_dest = gen_highpart (SImode, operands[0]); + lo_op0 = gen_lowpart (SImode, operands[1]); + hi_op0 = gen_highpart (SImode, operands[1]); + lo_op1 = gen_lowpart (SImode, operands[2]); + hi_op1 = gen_highpart (SImode, operands[2]); + if (rtx_equal_p (lo_op0, lo_op1)) + FAIL; + emit_clobber (operands[0]); + emit_insn (gen_subsi3 (lo_dest, lo_op0, lo_op1)); + emit_insn (gen_subsi3 (hi_dest, hi_op0, hi_op1)); + emit_cmp_and_jump_insns (lo_op0, lo_op1, GEU, const0_rtx, + SImode, true, label = gen_label_rtx ()); + emit_insn (gen_addsi3 (hi_dest, hi_dest, constm1_rtx)); + emit_label (label); + DONE; +}) + (define_insn "subsf3" [(set (match_operand:SF 0 "register_operand" "=f") (minus:SF (match_operand:SF 1 "register_operand" "f") -- 2.30.2