From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7915) id 8B8103858D32; Sun, 17 Sep 2023 17:29:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8B8103858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1694971782; bh=tcytQHjCG5lGZdtvvAeaoEJT9z+/Y8TQCSPEAGe3ZhE=; h=From:To:Subject:Date:From; b=ulWTKb2nWYGpUimdmY7GWqp+Kk4SPdrSjOHTOCr1eXnFaKNEcXWjzLeqnglUCrIAA qbP8XTLasIyjbSNRxokJH7roCt/wHOO3q9GKukdZzXVWyrikDeTpMtAZdlvTaas5mN Dwq+P5PrjG+R9X55kCrCJgYb1cMNmExRB0ynExbE= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Ajit Kumar Agarwal To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-4079] rs6000: unnecessary clear after vctzlsbb in vec_first_match_or_eos_index X-Act-Checkin: gcc X-Git-Author: Ajit Kumar Agarwal X-Git-Refname: refs/heads/master X-Git-Oldrev: 68845f7c4d58186cc0a5b09f7511f3c0a8f07e88 X-Git-Newrev: b34f8e705d961260adc2bea95db4361b2e70d565 Message-Id: <20230917172942.8B8103858D32@sourceware.org> Date: Sun, 17 Sep 2023 17:29:42 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b34f8e705d961260adc2bea95db4361b2e70d565 commit r14-4079-gb34f8e705d961260adc2bea95db4361b2e70d565 Author: Ajit Kumar Agarwal Date: Sun Sep 17 12:27:10 2023 -0500 rs6000: unnecessary clear after vctzlsbb in vec_first_match_or_eos_index For rs6000 target we dont need zero_extend after vctzlsbb as vctzlsbb already zero extend. 2023-09-17 Ajit Kumar Agarwal gcc/ChangeLog: * config/rs6000/vsx.md (*vctzlsbb_zext_): New define_insn. gcc/testsuite/ChangeLog: * g++.target/powerpc/altivec-19.C: New testcase. Diff: --- gcc/config/rs6000/vsx.md | 17 ++++++++++++++--- gcc/testsuite/g++.target/powerpc/altivec-19.C | 10 ++++++++++ 2 files changed, 24 insertions(+), 3 deletions(-) diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md index 19abfeb565a..4de41e78d51 100644 --- a/gcc/config/rs6000/vsx.md +++ b/gcc/config/rs6000/vsx.md @@ -5846,11 +5846,22 @@ [(set_attr "type" "vecsimple")]) ;; Vector Count Trailing Zero Least-Significant Bits Byte -(define_insn "vctzlsbb_" - [(set (match_operand:SI 0 "register_operand" "=r") +(define_insn "*vctzlsbb_zext_" + [(set (match_operand:DI 0 "register_operand" "=r") + (zero_extend:DI (unspec:SI [(match_operand:VSX_EXTRACT_I 1 "altivec_register_operand" "v")] - UNSPEC_VCTZLSBB))] + UNSPEC_VCTZLSBB)))] + "TARGET_P9_VECTOR" + "vctzlsbb %0,%1" + [(set_attr "type" "vecsimple")]) + +;; Vector Count Trailing Zero Least-Significant Bits Byte +(define_insn "vctzlsbb_" + [(set (match_operand:SI 0 "register_operand" "=r") + (unspec:SI + [(match_operand:VSX_EXTRACT_I 1 "altivec_register_operand" "v")] + UNSPEC_VCTZLSBB))] "TARGET_P9_VECTOR" "vctzlsbb %0,%1" [(set_attr "type" "vecsimple")]) diff --git a/gcc/testsuite/g++.target/powerpc/altivec-19.C b/gcc/testsuite/g++.target/powerpc/altivec-19.C new file mode 100644 index 00000000000..5879e72dfd2 --- /dev/null +++ b/gcc/testsuite/g++.target/powerpc/altivec-19.C @@ -0,0 +1,10 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target powerpc_p9vector_ok } */ +/* { dg-options "-mdejagnu-cpu=power9 -O2 " } */ + +#include + +unsigned int foo (vector unsigned char a, vector unsigned char b) { + return vec_first_match_or_eos_index (a, b); +} +/* { dg-final { scan-assembler-not {\mrldicl\M} } } */