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From: "Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>
To: qemu-devel@nongnu.org
Subject: [PULL 05/18] target/mips: Use gen_mxu_logic for gen_mxu_S32SLT
Date: Thu, 24 Sep 2026 17:23:40 +0200	[thread overview]
Message-ID: <20260924152353.36209-6-philmd@oss.qualcomm.com> (raw)
In-Reply-To: <20260924152353.36209-1-philmd@oss.qualcomm.com>

From: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Message-ID: <20260914230901.1781309-6-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 target/mips/tcg/mxu_translate.c | 33 +++++++--------------------------
 1 file changed, 7 insertions(+), 26 deletions(-)

diff --git a/target/mips/tcg/mxu_translate.c b/target/mips/tcg/mxu_translate.c
index 4b2c264f031..293eeb46c23 100644
--- a/target/mips/tcg/mxu_translate.c
+++ b/target/mips/tcg/mxu_translate.c
@@ -2313,34 +2313,15 @@ static void gen_mxu_q8slt(DisasContext *ctx, bool sltu)
  *    Update XRa with the signed "set less than" comparison of XRb and XRc.
  *    a.k.a. XRa = XRb < XRc ? 1 : 0;
  */
+
+static void gen_setcond_lt_i32(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2)
+{
+    tcg_gen_setcond_i32(TCG_COND_LT, d, s1, s2);
+}
+
 static void gen_mxu_S32SLT(DisasContext *ctx)
 {
-    uint32_t pad, XRc, XRb, XRa;
-
-    pad = extract32(ctx->opcode, 21, 5);
-    XRc = extract32(ctx->opcode, 14, 4);
-    XRb = extract32(ctx->opcode, 10, 4);
-    XRa = extract32(ctx->opcode,  6, 4);
-
-    if (unlikely(pad != 0)) {
-        /* opcode padding incorrect -> do nothing */
-    } else if (unlikely(XRa == 0)) {
-        /* destination is zero register -> do nothing */
-    } else if (unlikely((XRb == 0) && (XRc == 0))) {
-        /* both operands zero registers -> just set destination to zero */
-        tcg_gen_movi_i32(mxu_gpr[XRa - 1], 0);
-    } else if (unlikely(XRb == XRc)) {
-        /* both operands same registers -> just set destination to zero */
-        tcg_gen_movi_i32(mxu_gpr[XRa - 1], 0);
-    } else {
-        /* the most general case */
-        TCGv_i32 t0 = tcg_temp_new_i32();
-        TCGv_i32 t1 = tcg_temp_new_i32();
-
-        gen_load_mxu_gpr(t0, XRb);
-        gen_load_mxu_gpr(t1, XRc);
-        tcg_gen_setcond_i32(TCG_COND_LT, mxu_gpr[XRa - 1], t0, t1);
-    }
+    gen_mxu_logic(ctx, gen_setcond_lt_i32);
 }
 
 /*
-- 
2.53.0



  parent reply	other threads:[~2026-09-24 15:26 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-24 15:23 [PULL 00/18] Misc target/ patches for 2026-09-24 Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 01/18] target/mips: Fix zero in gen_mxu_d8sum Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 02/18] target/mips: Drop zero optimization in gen_mxu_s32mul Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 03/18] target/mips: Split out gen_mxu_logic Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 04/18] target/mips: Use gen_mxu_logic for gen_mxu_S32MAX_S32MIN Philippe Mathieu-Daudé
2026-09-24 15:23 ` Philippe Mathieu-Daudé [this message]
2026-09-24 15:23 ` [PULL 06/18] target/mips: Use gen_mxu_logic for gen_mxu_S32CPS Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 07/18] target/riscv: Stub out kvm functions Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 08/18] system: Document has_work() synchronization requirements Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 09/18] target/s390x: Use s390_cpu_get_state() consistently Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 10/18] target/s390x: Extend comment about PV cpu load state Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 11/18] target/s390x: Make s390_cpu_set_state() return void Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 12/18] target/s390x: Use S390CpuState for CPU state APIs Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 13/18] target/s390x: Access S390CpuState atomically Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 14/18] target/arm: Un-inline arm_set_cpu_power_state() Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 15/18] target/arm: Access PSCI state atomically Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 16/18] target/arm: Access halt " Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 17/18] target/i386: Use an acquire load for interrupt_request() Philippe Mathieu-Daudé
2026-09-24 15:23 ` [PULL 18/18] target/ppc: Stop vCPU thread before calling parent_unrealize Philippe Mathieu-Daudé
2026-09-25  2:35 ` [PULL 00/18] Misc target/ patches for 2026-09-24 Richard Henderson

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