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[173.198.77.218]) by smtp.gmail.com with ESMTPSA id r11-20020a170902be0b00b0019aca830869sm7181444pls.238.2023.02.28.19.01.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Feb 2023 19:01:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; 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=QOqj12NZ3gNRNBV2U+M0PKbEnSnQS1hXJwZ2GVjP+0c=; b=hMOIofZsltI/o5cfepXE7wyTAM2JkKzhoCsCQ6u8Hz+CSSlVsvubn2gD6xc34tgt7L w0A6OdaA0urJuwB9mi4Dk0cnSR8yDD7JBMQIB2s0zHHZvGnhODJ7WHJ3D8SALYD/LPFL 9MHcM9o42LyOfrKpivoVk4C4BySmaL4VUtzQaLj+G1TsNIj5iTLb1lxkG5dysTAV0qax rKk3kbhdlIpOvG7i2rUXDA8HVj/ZTeQtzrqjSXdNU6ibGdTs2UcjMmBzOX8XzEV7IQDs lZykY15uOfC3taLTAtSTxQoRsSV6yfBHq/2B8M2zOlE20KVmQmavDS0zSk5Rnm8TOHkT plpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=QOqj12NZ3gNRNBV2U+M0PKbEnSnQS1hXJwZ2GVjP+0c=; b=6L1hsPX+sYedO4w0SrdydnrmAakFq+Z2JHW1gP/+xb/TPI7cdCHFumuHOmGmV/PysO E1ZR+U6vXcJQ5ViRePlxxFqGQM9mt9VKr4Y2gEO06V4eNEKBrkfv9nl+hT9gqcwWOMt9 4kr8OaA5zxVZOAikMIO0CB259+Zm4WnhgfArD6KFR4qunKcIhx1HYFd0ptKCEOQ9YYw2 EzEeRUgm4Qz8yWeIYmimtwkiz5h19+n9dTgsXUvhbuW08nsXMncG/eKpxcr2XCNHoouI RJRT+a3gpxG78zRbLZgXcPvHqBCSRZbYKD1ZrKneWy3zYQ4Mfb+CGTXYZAs8w3OlMjrf 99fg== X-Gm-Message-State: AO0yUKVM4zFbLG2LovJgxwX1BdQBOZYGiD5JJIY5ACxkTioB9XI4QTjK yFps0gV/QblFLo5hT9DkR1GVQ/syvvVl4c90Qb4= X-Google-Smtp-Source: AK7set9tcZsIams+VJD1AF830BlY6+yGyZw8gcynwL4HkcJg8j2o11qv500GR/mlpg3IYraZ/L9mMQ== X-Received: by 2002:a17:903:1245:b0:19e:29ce:697f with SMTP id u5-20020a170903124500b0019e29ce697fmr5126482plh.41.1677639668089; Tue, 28 Feb 2023 19:01:08 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PULL 48/62] tcg: Don't re-use TEMP_TB temporaries Date: Tue, 28 Feb 2023 16:56:29 -1000 Message-Id: <20230301025643.1227244-49-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230301025643.1227244-1-richard.henderson@linaro.org> References: <20230301025643.1227244-1-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::629; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x629.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: 1677639789103100001 Reusing TEMP_TB interferes with detecting whether the temp can be adjusted to TEMP_EBB. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- include/tcg/tcg.h | 2 +- tcg/tcg.c | 101 ++++++++++++++++++++++++---------------------- 2 files changed, 53 insertions(+), 50 deletions(-) diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index 0c2041bcf7..6cc6758cd6 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -612,7 +612,7 @@ struct TCGContext { #endif =20 GHashTable *const_table[TCG_TYPE_COUNT]; - TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; + TCGTempSet free_temps[TCG_TYPE_COUNT]; TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ =20 QTAILQ_HEAD(, TCGOp) ops, free_ops; diff --git a/tcg/tcg.c b/tcg/tcg.c index a54f93c858..7f4d2f1920 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1257,63 +1257,66 @@ TCGTemp *tcg_global_mem_new_internal(TCGType type, = TCGv_ptr base, TCGTemp *tcg_temp_new_internal(TCGType type, TCGTempKind kind) { TCGContext *s =3D tcg_ctx; - bool temp_local =3D kind =3D=3D TEMP_TB; TCGTemp *ts; - int idx, k; + int n; =20 - k =3D type + (temp_local ? TCG_TYPE_COUNT : 0); - idx =3D find_first_bit(s->free_temps[k].l, TCG_MAX_TEMPS); - if (idx < TCG_MAX_TEMPS) { - /* There is already an available temp with the right type. */ - clear_bit(idx, s->free_temps[k].l); + if (kind =3D=3D TEMP_EBB) { + int idx =3D find_first_bit(s->free_temps[type].l, TCG_MAX_TEMPS); =20 - ts =3D &s->temps[idx]; - ts->temp_allocated =3D 1; - tcg_debug_assert(ts->base_type =3D=3D type); - tcg_debug_assert(ts->kind =3D=3D kind); - } else { - int i, n; + if (idx < TCG_MAX_TEMPS) { + /* There is already an available temp with the right type. */ + clear_bit(idx, s->free_temps[type].l); =20 - switch (type) { - case TCG_TYPE_I32: - case TCG_TYPE_V64: - case TCG_TYPE_V128: - case TCG_TYPE_V256: - n =3D 1; - break; - case TCG_TYPE_I64: - n =3D 64 / TCG_TARGET_REG_BITS; - break; - case TCG_TYPE_I128: - n =3D 128 / TCG_TARGET_REG_BITS; - break; - default: - g_assert_not_reached(); + ts =3D &s->temps[idx]; + ts->temp_allocated =3D 1; + tcg_debug_assert(ts->base_type =3D=3D type); + tcg_debug_assert(ts->kind =3D=3D kind); + goto done; } + } else { + tcg_debug_assert(kind =3D=3D TEMP_TB); + } =20 - ts =3D tcg_temp_alloc(s); - ts->base_type =3D type; - ts->temp_allocated =3D 1; - ts->kind =3D kind; + switch (type) { + case TCG_TYPE_I32: + case TCG_TYPE_V64: + case TCG_TYPE_V128: + case TCG_TYPE_V256: + n =3D 1; + break; + case TCG_TYPE_I64: + n =3D 64 / TCG_TARGET_REG_BITS; + break; + case TCG_TYPE_I128: + n =3D 128 / TCG_TARGET_REG_BITS; + break; + default: + g_assert_not_reached(); + } =20 - if (n =3D=3D 1) { - ts->type =3D type; - } else { - ts->type =3D TCG_TYPE_REG; + ts =3D tcg_temp_alloc(s); + ts->base_type =3D type; + ts->temp_allocated =3D 1; + ts->kind =3D kind; =20 - for (i =3D 1; i < n; ++i) { - TCGTemp *ts2 =3D tcg_temp_alloc(s); + if (n =3D=3D 1) { + ts->type =3D type; + } else { + ts->type =3D TCG_TYPE_REG; =20 - tcg_debug_assert(ts2 =3D=3D ts + i); - ts2->base_type =3D type; - ts2->type =3D TCG_TYPE_REG; - ts2->temp_allocated =3D 1; - ts2->temp_subindex =3D i; - ts2->kind =3D kind; - } + for (int i =3D 1; i < n; ++i) { + TCGTemp *ts2 =3D tcg_temp_alloc(s); + + tcg_debug_assert(ts2 =3D=3D ts + i); + ts2->base_type =3D type; + ts2->type =3D TCG_TYPE_REG; + ts2->temp_allocated =3D 1; + ts2->temp_subindex =3D i; + ts2->kind =3D kind; } } =20 + done: #if defined(CONFIG_DEBUG_TCG) s->temps_in_use++; #endif @@ -1358,7 +1361,6 @@ TCGv_vec tcg_temp_new_vec_matching(TCGv_vec match) void tcg_temp_free_internal(TCGTemp *ts) { TCGContext *s =3D tcg_ctx; - int k, idx; =20 switch (ts->kind) { case TEMP_CONST: @@ -1382,9 +1384,10 @@ void tcg_temp_free_internal(TCGTemp *ts) s->temps_in_use--; #endif =20 - idx =3D temp_idx(ts); - k =3D ts->base_type + (ts->kind =3D=3D TEMP_EBB ? 0 : TCG_TYPE_COUNT); - set_bit(idx, s->free_temps[k].l); + if (ts->kind =3D=3D TEMP_EBB) { + int idx =3D temp_idx(ts); + set_bit(idx, s->free_temps[ts->base_type].l); + } } =20 TCGTemp *tcg_constant_internal(TCGType type, int64_t val) --=20 2.34.1