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From: Andrew Stubbs <ams@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc/devel/omp/gcc-12] amdgcn: Add vector integer negate insn Date: Wed, 12 Oct 2022 10:46:19 +0000 (GMT) [thread overview] Message-ID: <20221012104619.4CD273895FD7@sourceware.org> (raw) https://gcc.gnu.org/g:a199fcd8bb00be552c49ea2ddc6510f6e383c3b7 commit a199fcd8bb00be552c49ea2ddc6510f6e383c3b7 Author: Andrew Stubbs <ams@codesourcery.com> Date: Thu Sep 22 12:48:30 2022 +0100 amdgcn: Add vector integer negate insn Another example of the vectorizer needing explicit insns where the scalar expander just works. gcc/ChangeLog: * config/gcn/gcn-valu.md (neg<mode>2): New define_expand. Diff: --- gcc/ChangeLog.omp | 7 +++++++ gcc/config/gcn/gcn-valu.md | 13 +++++++++++++ 2 files changed, 20 insertions(+) diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp index c388c4833f5..7dcc2202072 100644 --- a/gcc/ChangeLog.omp +++ b/gcc/ChangeLog.omp @@ -1,3 +1,10 @@ +2022-10-12 Andrew Stubbs <ams@codesourcery.com> + + Backport from mainline: + 2022-10-11 Andrew Stubbs <ams@codesourcery.com> + + * config/gcn/gcn-valu.md (neg<mode>2): New define_expand. + 2022-10-12 Andrew Stubbs <ams@codesourcery.com> Backport from mainline: diff --git a/gcc/config/gcn/gcn-valu.md b/gcc/config/gcn/gcn-valu.md index 3e7434a02a8..9691ff480ce 100644 --- a/gcc/config/gcn/gcn-valu.md +++ b/gcc/config/gcn/gcn-valu.md @@ -2393,6 +2393,19 @@ [(set_attr "type" "vop2,ds") (set_attr "length" "8,8")]) +;; }}} +;; {{{ Int unops + +(define_expand "neg<mode>2" + [(match_operand:V_INT 0 "register_operand") + (match_operand:V_INT 1 "register_operand")] + "" + { + emit_insn (gen_sub<mode>3 (operands[0], gcn_vec_constant (<MODE>mode, 0), + operands[1])); + DONE; + }) + ;; }}} ;; {{{ FP binops - special cases
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