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([2602:ae:154a:9f01:b1e0:bfd9:8b1a:efeb]) by smtp.gmail.com with ESMTPSA id z4-20020a63e544000000b00502fd70b0bdsm8080441pgj.52.2023.03.07.10.02.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Mar 2023 10:02:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678212146; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=vFKvR27NDihSbHS157V+NkcV6tIr6k7+tyVXGGm42uc=; b=McExLk3sOTapfIipCYdRkXpX+4oJ/XPi/nQ39LYPOwdzvyi4X4dAZuEvK2gGQworsl WnGDYWwFNCrnUKtQ/GDNDzIxjdVm5jFnY+2dbrddlhuQoVxIoVhI0vn9rpXqBx1X5oRO 1ky46idMvxLFKJEXQ13gZnJt5y4Sqj+vSMYhmplISGYHUGoucyFx6DqDS//d9UTQ1JlO yX0xc5RGD+99rA0w9uzckuy0OhubkOwCn7ALqTNZwvHERo/lD3YrfWjpDA1yLAw2qqUY FsOXE6LFXtBSsUthIDAMYXZcfieoF8W1WHF6c1b59PdbzT5WCTHG8FJAx8Wc3MjpQKhu CLJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678212146; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=vFKvR27NDihSbHS157V+NkcV6tIr6k7+tyVXGGm42uc=; b=v32zUsgiwN2PiEc7kjZLE5HyEyI/vlVmX4UVsTKfSrfDyRMylgY+2izf2YlJXxpr8D bBRsbHg06C8H+woNIGVhNz1QM2y7QuJ4hfFyRubEpnOunAwOdWb5Jk/q8gTTdPMBGQHh AnLRD8zQoABlyDnD+q4WbReSU7wojnr2ACYq6O5ikqYl3fCr6ejU1u85y7g8KVHangTK HGEM4C2OAEHElPk1ZlBvRRxUUsMJh8jlM643IHwuXla5+MLvqlZtZWDn9DoGRGRZrP9/ f3mCa0OLutmt8LFddv/4c+0qMJ9CN/Edos84vBUcpFipQYXLSo1g73yO7cgjiWFP670x FvHw== X-Gm-Message-State: AO0yUKWA7LVZYT1+oZh51mnATrC91OrRaj8gQOj9FFkCVGE9GD1SBO7u m+B6lwNK9DK5N9+GJT7nN+2hahtVGsNGDDNtY7Q= X-Google-Smtp-Source: AK7set90XrGI0755TjQWoD1Jed2O3US/JSQPgoTzZRaHH0kmenS57xDawCmrJQeD6PDAHDD1R4g6rQ== X-Received: by 2002:a17:902:f7d4:b0:196:7bfb:f0d1 with SMTP id h20-20020a170902f7d400b001967bfbf0d1mr12683785plw.34.1678212145749; Tue, 07 Mar 2023 10:02:25 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 45/67] target/m68k: Avoid tcg_const_i32 when modified Date: Tue, 7 Mar 2023 09:58:26 -0800 Message-Id: <20230307175848.2508955-46-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230307175848.2508955-1-richard.henderson@linaro.org> References: <20230307175848.2508955-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1678212259147100010 In several instances, a temp is initialized with a for use as a constant, and then subsequently used as an unrelated temp. Split them. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- target/m68k/translate.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 3055d2d246..0002d80bf9 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -1631,8 +1631,8 @@ static void bcd_add(TCGv dest, TCGv src) * =3D result with some possible exceeding 0x6 */ =20 - t0 =3D tcg_const_i32(0x066); - tcg_gen_add_i32(t0, t0, src); + t0 =3D tcg_temp_new(); + tcg_gen_addi_i32(t0, src, 0x066); =20 t1 =3D tcg_temp_new(); tcg_gen_add_i32(t1, t0, dest); @@ -1818,7 +1818,8 @@ DISAS_INSN(nbcd) =20 SRC_EA(env, src, OS_BYTE, 0, &addr); =20 - dest =3D tcg_const_i32(0); + dest =3D tcg_temp_new(); + tcg_gen_movi_i32(dest, 0); bcd_sub(dest, src); =20 DEST_EA(env, insn, OS_BYTE, dest, &addr); @@ -1896,8 +1897,8 @@ DISAS_INSN(bitop_reg) else tcg_gen_andi_i32(src2, DREG(insn, 9), 31); =20 - tmp =3D tcg_const_i32(1); - tcg_gen_shl_i32(tmp, tmp, src2); + tmp =3D tcg_temp_new(); + tcg_gen_shl_i32(tmp, tcg_constant_i32(1), src2); =20 tcg_gen_and_i32(QREG_CC_Z, src1, tmp); =20 @@ -3076,7 +3077,7 @@ DISAS_INSN(suba) =20 static inline void gen_subx(DisasContext *s, TCGv src, TCGv dest, int opsi= ze) { - TCGv tmp; + TCGv tmp, zero; =20 gen_flush_flags(s); /* compute old Z */ =20 @@ -3085,14 +3086,15 @@ static inline void gen_subx(DisasContext *s, TCGv s= rc, TCGv dest, int opsize) * (X, N) =3D dest - (src + X); */ =20 - tmp =3D tcg_const_i32(0); - tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, src, tmp, QREG_CC_X, tmp); - tcg_gen_sub2_i32(QREG_CC_N, QREG_CC_X, dest, tmp, QREG_CC_N, QREG_CC_X= ); + zero =3D tcg_constant_i32(0); + tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, src, zero, QREG_CC_X, zero); + tcg_gen_sub2_i32(QREG_CC_N, QREG_CC_X, dest, zero, QREG_CC_N, QREG_CC_= X); gen_ext(QREG_CC_N, QREG_CC_N, opsize, 1); tcg_gen_andi_i32(QREG_CC_X, QREG_CC_X, 1); =20 /* Compute signed-overflow for subtract. */ =20 + tmp =3D tcg_temp_new(); tcg_gen_xor_i32(QREG_CC_V, QREG_CC_N, dest); tcg_gen_xor_i32(tmp, dest, src); tcg_gen_and_i32(QREG_CC_V, QREG_CC_V, tmp); @@ -3279,7 +3281,7 @@ DISAS_INSN(adda) =20 static inline void gen_addx(DisasContext *s, TCGv src, TCGv dest, int opsi= ze) { - TCGv tmp; + TCGv tmp, zero; =20 gen_flush_flags(s); /* compute old Z */ =20 @@ -3288,13 +3290,14 @@ static inline void gen_addx(DisasContext *s, TCGv s= rc, TCGv dest, int opsize) * (X, N) =3D src + dest + X; */ =20 - tmp =3D tcg_const_i32(0); - tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_X, tmp, dest, tmp); - tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_N, QREG_CC_X, src, tmp); + zero =3D tcg_constant_i32(0); + tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_X, zero, dest, zero); + tcg_gen_add2_i32(QREG_CC_N, QREG_CC_X, QREG_CC_N, QREG_CC_X, src, zero= ); gen_ext(QREG_CC_N, QREG_CC_N, opsize, 1); =20 /* Compute signed-overflow for addition. */ =20 + tmp =3D tcg_temp_new(); tcg_gen_xor_i32(QREG_CC_V, QREG_CC_N, src); tcg_gen_xor_i32(tmp, dest, src); tcg_gen_andc_i32(QREG_CC_V, QREG_CC_V, tmp); --=20 2.34.1