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[73.93.86.59]) by smtp.gmail.com with ESMTPSA id g128sm17902108pfb.121.2019.02.18.10.37.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 18 Feb 2019 10:37:13 -0800 (PST) Received: from gnu-cfl-2.hsd1.ca.comcast.net (localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id 55CBEC0352; Mon, 18 Feb 2019 10:36:58 -0800 (PST) From: "H.J. Lu" To: gcc-patches@gcc.gnu.org Cc: Uros Bizjak Subject: [PATCH 19/41] i386: Emulate MMX mmx_pmovmskb with SSE Date: Mon, 18 Feb 2019 10:36:35 -0800 Message-Id: <20190218183657.16296-20-hjl.tools@gmail.com> In-Reply-To: <20190218183657.16296-1-hjl.tools@gmail.com> References: <20190218183657.16296-1-hjl.tools@gmail.com> MIME-Version: 1.0 X-IsSubscribed: yes Emulate MMX mmx_pmovmskb with SSE by zero-extending result of SSE pmovmskb from QImode to SImode. Only SSE register source operand is allowed. PR target/89021 * config/i386/mmx.md (mmx_pmovmskb): Changed to define_insn_and_split to support SSE emulation. --- gcc/config/i386/mmx.md | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md index edfb8623701..5ae04de205d 100644 --- a/gcc/config/i386/mmx.md +++ b/gcc/config/i386/mmx.md @@ -1763,14 +1763,30 @@ [(set_attr "type" "mmxshft") (set_attr "mode" "DI")]) -(define_insn "mmx_pmovmskb" - [(set (match_operand:SI 0 "register_operand" "=r") - (unspec:SI [(match_operand:V8QI 1 "register_operand" "y")] +(define_insn_and_split "mmx_pmovmskb" + [(set (match_operand:SI 0 "register_operand" "=r,r") + (unspec:SI [(match_operand:V8QI 1 "register_operand" "y,x")] UNSPEC_MOVMSK))] - "TARGET_SSE || TARGET_3DNOW_A" - "pmovmskb\t{%1, %0|%0, %1}" - [(set_attr "type" "mmxcvt") - (set_attr "mode" "DI")]) + "(TARGET_MMX || TARGET_MMX_WITH_SSE) + && (TARGET_SSE || TARGET_3DNOW_A)" + "@ + pmovmskb\t{%1, %0|%0, %1} + #" + "TARGET_MMX_WITH_SSE && reload_completed" + [(set (match_dup 0) + (unspec:SI [(match_dup 1)] UNSPEC_MOVMSK)) + (set (match_dup 0) + (zero_extend:SI (match_dup 2)))] +{ + /* Generate SSE pmovmskb and zero-extend from QImode to SImode. */ + operands[1] = lowpart_subreg (V16QImode, operands[1], + GET_MODE (operands[1])); + operands[2] = lowpart_subreg (QImode, operands[0], + GET_MODE (operands[0])); +} + [(set_attr "mmx_isa" "native,x64") + (set_attr "type" "mmxcvt,ssemov") + (set_attr "mode" "DI,TI")]) (define_expand "mmx_maskmovq" [(set (match_operand:V8QI 0 "memory_operand")