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[PATCH] RISC-V: XTheadMemPair: Remove register restrictions for store-pa

From: Christoph Muellner
Subject: [PATCH] RISC-V: XTheadMemPair: Remove register restrictions for store-pair
Date: Mon, 20 Feb 2023 10:56:12 +0100

From: Christoph Müllner <christoph.muellner@vrull.eu>

The XTheadMemPair does not define any restrictions for store-pair
instructions (th.sdd or th.swd). However, the current code enforces
the restrictions that are required for load-pair instructions.
Let's fix this by removing this code.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
 target/riscv/insn_trans/trans_xthead.c.inc | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/target/riscv/insn_trans/trans_xthead.c.inc 
index be87c34f56..cf1731b08d 100644
--- a/target/riscv/insn_trans/trans_xthead.c.inc
+++ b/target/riscv/insn_trans/trans_xthead.c.inc
@@ -980,10 +980,6 @@ static bool trans_th_lwud(DisasContext *ctx, arg_th_pair 
 static bool gen_storepair_tl(DisasContext *ctx, arg_th_pair *a, MemOp memop,
                              int shamt)
-    if (a->rs == a->rd1 || a->rs == a->rd2 || a->rd1 == a->rd2) {
-        return false;
-    }
     TCGv data1 = get_gpr(ctx, a->rd1, EXT_NONE);
     TCGv data2 = get_gpr(ctx, a->rd2, EXT_NONE);
     TCGv addr1 = tcg_temp_new();

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