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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99908] SIMD: negating logical + if_else has a suboptimal codegen.
Date: Tue, 06 Apr 2021 09:41:39 +0000 [thread overview]
Message-ID: <bug-99908-4-4uJTxwZ1tE@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-99908-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99908
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
I'm testing
@@ -17759,6 +17759,35 @@ (define_insn "<sse4_1_avx2>_pblendvb"
(set_attr "btver2_decode" "vector,vector,vector")
(set_attr "mode" "<sseinsnmode>")])
+(define_split
+ [(set (match_operand:VI1_AVX2 0 "register_operand")
+ (unspec:VI1_AVX2
+ [(match_operand:VI1_AVX2 1 "vector_operand")
+ (match_operand:VI1_AVX2 2 "register_operand")
+ (not:VI1_AVX2 (match_operand:VI1_AVX2 3 "register_operand"))]
+ UNSPEC_BLENDV))]
+ "TARGET_SSE4_1"
+ [(set (match_dup 0)
+ (unspec:VI1_AVX2
+ [(match_dup 2) (match_dup 1) (match_dup 3)]
+ UNSPEC_BLENDV))])
+
+(define_split
+ [(set (match_operand:VI1_AVX2 0 "register_operand")
+ (unspec:VI1_AVX2
+ [(match_operand:VI1_AVX2 1 "vector_operand")
+ (match_operand:VI1_AVX2 2 "register_operand")
+ (subreg:VI1_AVX2 (not (match_operand 3 "register_operand")) 0)]
+ UNSPEC_BLENDV))]
+ "TARGET_SSE4_1
+ && GET_MODE_CLASS (GET_MODE (operands[3])) == MODE_VECTOR_INT
+ && GET_MODE_SIZE (GET_MODE (operands[3])) == <MODE_SIZE>"
+ [(set (match_dup 0)
+ (unspec:VI1_AVX2
+ [(match_dup 2) (match_dup 1) (match_dup 4)]
+ UNSPEC_BLENDV))]
+ "operands[4] = gen_lowpart (<MODE>mode, operands[3]);")
+
next prev parent reply other threads:[~2021-04-06 9:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-04 12:30 [Bug c++/99908] New: Arm optimisation generates a `not` instruction instead of switching arguments of bsl denis.yaroshevskij at gmail dot com
2021-04-04 20:01 ` [Bug target/99908] SIMD: negating logical + if_else has a suboptimal codegen pinskia at gcc dot gnu.org
2021-04-06 8:04 ` rguenth at gcc dot gnu.org
2021-04-06 9:41 ` crazylht at gmail dot com [this message]
2021-04-07 2:12 ` crazylht at gmail dot com
2021-05-07 2:23 ` crazylht at gmail dot com
2021-05-12 11:44 ` cvs-commit at gcc dot gnu.org
2021-05-12 11:45 ` crazylht at gmail dot com
2021-05-12 12:01 ` rearnsha at gcc dot gnu.org
2021-05-12 12:04 ` rearnsha at gcc dot gnu.org
2023-08-08 1:27 ` pinskia at gcc dot gnu.org
2023-08-08 1:29 ` pinskia at gcc dot gnu.org
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