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([71.212.149.95]) by smtp.gmail.com with ESMTPSA id u7-20020aa78487000000b00694fee1011asm1946775pfn.208.2023.10.20.13.47.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 13:47:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: deller@gmx.de Subject: [PATCH v2 60/65] target/hppa: Precompute zero into DisasContext Date: Fri, 20 Oct 2023 13:43:26 -0700 Message-Id: <20231020204331.139847-61-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231020204331.139847-1-richard.henderson@linaro.org> References: <20231020204331.139847-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42c; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42c.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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Reduce the number of times we look for the constant 0. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé --- target/hppa/translate.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/target/hppa/translate.c b/target/hppa/translate.c index a79cf52fcc..9b60924057 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -53,6 +53,8 @@ typedef struct DisasContext { DisasCond null_cond; TCGLabel *null_lab; + TCGv_i64 zero; + uint32_t insn; uint32_t tb_flags; int mmu_idx; @@ -1004,14 +1006,13 @@ static void do_add(DisasContext *ctx, unsigned rt, TCGv_i64 in1, } if (!is_l || cond_need_cb(c)) { - TCGv_i64 zero = tcg_constant_i64(0); cb_msb = tcg_temp_new_i64(); cb = tcg_temp_new_i64(); - tcg_gen_add2_i64(dest, cb_msb, in1, zero, in2, zero); + tcg_gen_add2_i64(dest, cb_msb, in1, ctx->zero, in2, ctx->zero); if (is_c) { tcg_gen_add2_i64(dest, cb_msb, dest, cb_msb, - get_psw_carry(ctx, d), zero); + get_psw_carry(ctx, d), ctx->zero); } tcg_gen_xor_i64(cb, in1, in2); tcg_gen_xor_i64(cb, cb, dest); @@ -1089,7 +1090,7 @@ static void do_sub(DisasContext *ctx, unsigned rt, TCGv_i64 in1, TCGv_i64 in2, bool is_tsv, bool is_b, bool is_tc, unsigned cf, bool d) { - TCGv_i64 dest, sv, cb, cb_msb, zero, tmp; + TCGv_i64 dest, sv, cb, cb_msb, tmp; unsigned c = cf >> 1; DisasCond cond; @@ -1097,12 +1098,12 @@ static void do_sub(DisasContext *ctx, unsigned rt, TCGv_i64 in1, cb = tcg_temp_new_i64(); cb_msb = tcg_temp_new_i64(); - zero = tcg_constant_i64(0); if (is_b) { /* DEST,C = IN1 + ~IN2 + C. */ tcg_gen_not_i64(cb, in2); - tcg_gen_add2_i64(dest, cb_msb, in1, zero, get_psw_carry(ctx, d), zero); - tcg_gen_add2_i64(dest, cb_msb, dest, cb_msb, cb, zero); + tcg_gen_add2_i64(dest, cb_msb, in1, ctx->zero, + get_psw_carry(ctx, d), ctx->zero); + tcg_gen_add2_i64(dest, cb_msb, dest, cb_msb, cb, ctx->zero); tcg_gen_xor_i64(cb, cb, in1); tcg_gen_xor_i64(cb, cb, dest); } else { @@ -1111,7 +1112,7 @@ static void do_sub(DisasContext *ctx, unsigned rt, TCGv_i64 in1, * operations by seeding the high word with 1 and subtracting. */ TCGv_i64 one = tcg_constant_i64(1); - tcg_gen_sub2_i64(dest, cb_msb, in1, one, in2, zero); + tcg_gen_sub2_i64(dest, cb_msb, in1, one, in2, ctx->zero); tcg_gen_eqv_i64(cb, in1, in2); tcg_gen_xor_i64(cb, cb, dest); } @@ -2430,7 +2431,7 @@ static bool trans_lci(DisasContext *ctx, arg_lci *a) physical address. Two addresses with the same CI have a coherent view of the cache. Our implementation is to return 0 for all, since the entire address space is coherent. */ - save_gpr(ctx, a->t, tcg_constant_i64(0)); + save_gpr(ctx, a->t, ctx->zero); cond_free(&ctx->null_cond); return true; @@ -2639,7 +2640,7 @@ static bool trans_dcor_i(DisasContext *ctx, arg_rr_cf_d *a) static bool trans_ds(DisasContext *ctx, arg_rrr_cf *a) { - TCGv_i64 dest, add1, add2, addc, zero, in1, in2; + TCGv_i64 dest, add1, add2, addc, in1, in2; TCGv_i64 cout; nullify_over(ctx); @@ -2651,7 +2652,6 @@ static bool trans_ds(DisasContext *ctx, arg_rrr_cf *a) add2 = tcg_temp_new_i64(); addc = tcg_temp_new_i64(); dest = tcg_temp_new_i64(); - zero = tcg_constant_i64(0); /* Form R1 << 1 | PSW[CB]{8}. */ tcg_gen_add_i64(add1, in1, in1); @@ -2667,8 +2667,9 @@ static bool trans_ds(DisasContext *ctx, arg_rrr_cf *a) tcg_gen_xor_i64(add2, in2, addc); tcg_gen_andi_i64(addc, addc, 1); - tcg_gen_add2_i64(dest, cpu_psw_cb_msb, add1, zero, add2, zero); - tcg_gen_add2_i64(dest, cpu_psw_cb_msb, dest, cpu_psw_cb_msb, addc, zero); + tcg_gen_add2_i64(dest, cpu_psw_cb_msb, add1, ctx->zero, add2, ctx->zero); + tcg_gen_add2_i64(dest, cpu_psw_cb_msb, dest, cpu_psw_cb_msb, + addc, ctx->zero); /* Write back the result register. */ save_gpr(ctx, a->t, dest); @@ -2968,7 +2969,7 @@ static bool trans_st(DisasContext *ctx, arg_ldst *a) static bool trans_ldc(DisasContext *ctx, arg_ldst *a) { MemOp mop = MO_TE | MO_ALIGN | a->size; - TCGv_i64 zero, dest, ofs; + TCGv_i64 dest, ofs; TCGv_i64 addr; if (!ctx->is_pa20 && a->size > MO_32) { @@ -2998,8 +2999,7 @@ static bool trans_ldc(DisasContext *ctx, arg_ldst *a) */ gen_helper_ldc_check(addr); - zero = tcg_constant_i64(0); - tcg_gen_atomic_xchg_i64(dest, addr, zero, ctx->mmu_idx, mop); + tcg_gen_atomic_xchg_i64(dest, addr, ctx->zero, ctx->mmu_idx, mop); if (a->m) { save_gpr(ctx, a->b, ofs); @@ -4336,6 +4336,8 @@ static void hppa_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->iaoq_n = -1; ctx->iaoq_n_var = NULL; + ctx->zero = tcg_constant_i64(0); + /* Bound the number of instructions by those left on the page. */ bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4; ctx->base.max_insns = MIN(ctx->base.max_insns, bound);