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Iglesias" Subject: [PULL 12/28] target/microblaze: Drop DisasContext.r0 Date: Wed, 28 May 2025 09:13:54 +0100 Message-ID: <20250528081410.157251-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250528081410.157251-1-richard.henderson@linaro.org> References: <20250528081410.157251-1-richard.henderson@linaro.org> MIME-Version: 1.0 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=2a00:1450:4864:20::331; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x331.google.com X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) 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=unavailable 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: 1748420453636116600 Content-Type: text/plain; charset="utf-8" Return a constant 0 from reg_for_read, and a new temporary from reg_for_write. Reviewed-by: Edgar E. Iglesias Signed-off-by: Richard Henderson --- target/microblaze/translate.c | 24 ++---------------------- 1 file changed, 2 insertions(+), 22 deletions(-) diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index dc597b36e6..047d97e2c5 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -63,9 +63,6 @@ typedef struct DisasContext { DisasContextBase base; const MicroBlazeCPUConfig *cfg; =20 - TCGv_i32 r0; - bool r0_set; - /* Decoder. */ uint32_t ext_imm; unsigned int tb_flags; @@ -179,14 +176,7 @@ static TCGv_i32 reg_for_read(DisasContext *dc, int reg) if (likely(reg !=3D 0)) { return cpu_R[reg]; } - if (!dc->r0_set) { - if (dc->r0 =3D=3D NULL) { - dc->r0 =3D tcg_temp_new_i32(); - } - tcg_gen_movi_i32(dc->r0, 0); - dc->r0_set =3D true; - } - return dc->r0; + return tcg_constant_i32(0); } =20 static TCGv_i32 reg_for_write(DisasContext *dc, int reg) @@ -194,10 +184,7 @@ static TCGv_i32 reg_for_write(DisasContext *dc, int re= g) if (likely(reg !=3D 0)) { return cpu_R[reg]; } - if (dc->r0 =3D=3D NULL) { - dc->r0 =3D tcg_temp_new_i32(); - } - return dc->r0; + return tcg_temp_new_i32(); } =20 static bool do_typea(DisasContext *dc, arg_typea *arg, bool side_effects, @@ -1635,8 +1622,6 @@ static void mb_tr_init_disas_context(DisasContextBase= *dcb, CPUState *cs) dc->cfg =3D &cpu->cfg; dc->tb_flags =3D dc->base.tb->flags; dc->ext_imm =3D dc->base.tb->cs_base; - dc->r0 =3D NULL; - dc->r0_set =3D false; dc->mem_index =3D cpu_mmu_index(cs, false); dc->jmp_cond =3D dc->tb_flags & D_FLAG ? TCG_COND_ALWAYS : TCG_COND_NE= VER; dc->jmp_dest =3D -1; @@ -1675,11 +1660,6 @@ static void mb_tr_translate_insn(DisasContextBase *d= cb, CPUState *cs) trap_illegal(dc, true); } =20 - if (dc->r0) { - dc->r0 =3D NULL; - dc->r0_set =3D false; - } - /* Discard the imm global when its contents cannot be used. */ if ((dc->tb_flags & ~dc->tb_flags_to_set) & IMM_FLAG) { tcg_gen_discard_i32(cpu_imm); --=20 2.43.0