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From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Aleksandar Rikalo" <aleksandar.rikalo@syrmia.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>
Subject: [PATCH v5 11/13] target/mips: Simplify decode_opc_mxu() ifdef'ry
Date: Fri, 26 Feb 2021 10:31:08 +0100	[thread overview]
Message-ID: <20210226093111.3865906-12-f4bug@amsat.org> (raw)
In-Reply-To: <20210226093111.3865906-1-f4bug@amsat.org>

By making the prototype public and checking
'TARGET_LONG_BITS == 32' we let the compiler
elide the decode_opc_mxu() call.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/mips/translate.h | 3 +++
 target/mips/translate.c | 6 ++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/target/mips/translate.h b/target/mips/translate.h
index 468e29d7578..a5c49f1ee22 100644
--- a/target/mips/translate.h
+++ b/target/mips/translate.h
@@ -178,6 +178,9 @@ extern TCGv bcond;
 /* MSA */
 void msa_translate_init(void);
 
+/* MXU */
+bool decode_ase_mxu(DisasContext *ctx, uint32_t insn);
+
 /* decodetree generated */
 bool decode_isa_rel6(DisasContext *ctx, uint32_t insn);
 bool decode_ase_msa(DisasContext *ctx, uint32_t insn);
diff --git a/target/mips/translate.c b/target/mips/translate.c
index f25b1fe4d8f..84948ab9ce0 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -25779,7 +25779,7 @@ static void decode_opc_mxu__pool19(DisasContext *ctx)
 /*
  * Main MXU decoding function
  */
-static bool decode_ase_mxu(DisasContext *ctx, uint32_t insn)
+bool decode_ase_mxu(DisasContext *ctx, uint32_t insn)
 {
     uint32_t opcode = extract32(insn, 0, 6);
 
@@ -26981,8 +26981,7 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
             break;
         }
 #endif
-#if !defined(TARGET_MIPS64)
-        if (ctx->insn_flags & ASE_MXU) {
+        if (TARGET_LONG_BITS == 32 && (ctx->insn_flags & ASE_MXU)) {
             if (MASK_SPECIAL2(ctx->opcode) == OPC_MUL) {
                 gen_arith(ctx, OPC_MUL, rd, rs, rt);
             } else {
@@ -26990,7 +26989,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
             }
             break;
         }
-#endif
         decode_opc_special2_legacy(env, ctx);
         break;
     case OPC_SPECIAL3:
-- 
2.26.2



  parent reply	other threads:[~2021-02-26  9:34 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-26  9:30 [PATCH v5 00/13] target/mips: Extract MXU code to new mxu_translate.c file Philippe Mathieu-Daudé
2021-02-26  9:30 ` [PATCH v5 01/13] target/mips/meson: Introduce mips_tcg source set Philippe Mathieu-Daudé
2021-02-26  9:30 ` [PATCH v5 02/13] target/mips/meson: Restrict mips-semi.c to TCG Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 03/13] target/mips: Rewrite complex ifdef'ry Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 04/13] target/mips: Remove XBurst Media eXtension Unit dead code Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 05/13] target/mips: Remove unused CPUMIPSState* from MXU functions Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 06/13] target/mips: Pass instruction opcode to decode_opc_mxu() Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 07/13] target/mips: Use OPC_MUL instead of OPC__MXU_MUL Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 08/13] target/mips: Move MUL opcode check from decode_mxu() to decode_legacy() Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 09/13] target/mips: Rename decode_opc_mxu() as decode_ase_mxu() Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 10/13] target/mips: Convert decode_ase_mxu() to decodetree prototype Philippe Mathieu-Daudé
2021-02-26  9:31 ` Philippe Mathieu-Daudé [this message]
2021-02-26  9:31 ` [PATCH v5 12/13] target/mips: Introduce mxu_translate_init() helper Philippe Mathieu-Daudé
2021-02-26  9:31 ` [PATCH v5 13/13] target/mips: Extract MXU code to new mxu_translate.c file Philippe Mathieu-Daudé
2021-03-13 23:45 ` [PATCH v5 00/13] " Philippe Mathieu-Daudé

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