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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PATCH 4/6] tcg/mips: Implement neg opcodes
Date: Wed, 25 Oct 2023 21:14:02 -0700	[thread overview]
Message-ID: <20231026041404.1229328-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20231026041404.1229328-1-richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/mips/tcg-target.h     | 4 ++--
 tcg/mips/tcg-target.c.inc | 8 ++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
index 5b3fdcc726..20c14224fb 100644
--- a/tcg/mips/tcg-target.h
+++ b/tcg/mips/tcg-target.h
@@ -184,12 +184,12 @@ extern bool use_mips32r2_instructions;
 #endif
 
 /* optional instructions automatically implemented */
-#define TCG_TARGET_HAS_neg_i32          0 /* sub  rd, zero, rt   */
+#define TCG_TARGET_HAS_neg_i32          1
 #define TCG_TARGET_HAS_ext8u_i32        0 /* andi rt, rs, 0xff   */
 #define TCG_TARGET_HAS_ext16u_i32       0 /* andi rt, rs, 0xffff */
 
 #if TCG_TARGET_REG_BITS == 64
-#define TCG_TARGET_HAS_neg_i64          0 /* sub  rd, zero, rt   */
+#define TCG_TARGET_HAS_neg_i64          1
 #define TCG_TARGET_HAS_ext8u_i64        0 /* andi rt, rs, 0xff   */
 #define TCG_TARGET_HAS_ext16u_i64       0 /* andi rt, rs, 0xffff */
 #endif
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index f9b790ed8a..c38f5c9450 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -1935,6 +1935,12 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         tcg_out_opc_reg(s, OPC_MFHI, a1, 0, 0);
         break;
 
+    case INDEX_op_neg_i32:
+        i1 = OPC_SUBU;
+        goto do_unary;
+    case INDEX_op_neg_i64:
+        i1 = OPC_DSUBU;
+        goto do_unary;
     case INDEX_op_not_i32:
     case INDEX_op_not_i64:
         i1 = OPC_NOR;
@@ -2159,6 +2165,7 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_ld16u_i32:
     case INDEX_op_ld16s_i32:
     case INDEX_op_ld_i32:
+    case INDEX_op_neg_i32:
     case INDEX_op_not_i32:
     case INDEX_op_bswap16_i32:
     case INDEX_op_bswap32_i32:
@@ -2172,6 +2179,7 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_ld32s_i64:
     case INDEX_op_ld32u_i64:
     case INDEX_op_ld_i64:
+    case INDEX_op_neg_i64:
     case INDEX_op_not_i64:
     case INDEX_op_bswap16_i64:
     case INDEX_op_bswap32_i64:
-- 
2.34.1



  parent reply	other threads:[~2023-10-26  4:15 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-26  4:13 [PATCH 0/6] tcg: Always implement neg and movcond Richard Henderson
2023-10-26  4:13 ` [PATCH 1/6] tcg/mips: Split out tcg_out_setcond_int Richard Henderson
2023-10-26  4:14 ` [PATCH 2/6] tcg/mips: Always implement movcond Richard Henderson
2023-10-26  4:14 ` [PATCH 3/6] tcg: Remove TCG_TARGET_HAS_movcond_{i32,i64} Richard Henderson
2023-10-26  4:14 ` Richard Henderson [this message]
2023-10-26  4:14 ` [PATCH 5/6] tcg/loongarch64: Implement neg opcodes Richard Henderson
2023-10-26  4:14 ` [PATCH 6/6] tcg: Remove TCG_TARGET_HAS_neg_{i32,i64} Richard Henderson
2023-10-26  4:20 ` [PATCH 0/6] tcg: Always implement neg and movcond Richard Henderson

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