From: Richard Henderson <rth@twiddle.net>
Date: Wed, 24 Feb 2016 01:18:34 +0000 (-0800)
Subject: target-ppc: Use movcond in isel
X-Git-Tag: TizenStudio_2.0_p4.0~6^2~12^2~6^2~245^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=24f9cd951d1a8eda1ce1e2cf97a26ca169040331;p=sdk%2Femulator%2Fqemu.git

target-ppc: Use movcond in isel

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 745f4de..3ea6625 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -756,27 +756,20 @@ static void gen_cmpli(DisasContext *ctx)
 /* isel (PowerPC 2.03 specification) */
 static void gen_isel(DisasContext *ctx)
 {
-    TCGLabel *l1, *l2;
     uint32_t bi = rC(ctx->opcode);
-    uint32_t mask;
-    TCGv_i32 t0;
+    uint32_t mask = 0x08 >> (bi & 0x03);
+    TCGv t0 = tcg_temp_new();
+    TCGv zr;
 
-    l1 = gen_new_label();
-    l2 = gen_new_label();
+    tcg_gen_extu_i32_tl(t0, cpu_crf[bi >> 2]);
+    tcg_gen_andi_tl(t0, t0, mask);
 
-    mask = 0x08 >> (bi & 0x03);
-    t0 = tcg_temp_new_i32();
-    tcg_gen_andi_i32(t0, cpu_crf[bi >> 2], mask);
-    tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1);
-    if (rA(ctx->opcode) == 0)
-        tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], 0);
-    else
-        tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
-    tcg_gen_br(l2);
-    gen_set_label(l1);
-    tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
-    gen_set_label(l2);
-    tcg_temp_free_i32(t0);
+    zr = tcg_const_tl(0);
+    tcg_gen_movcond_tl(TCG_COND_NE, cpu_gpr[rD(ctx->opcode)], t0, zr,
+                       rA(ctx->opcode) ? cpu_gpr[rA(ctx->opcode)] : zr,
+                       cpu_gpr[rB(ctx->opcode)]);
+    tcg_temp_free(zr);
+    tcg_temp_free(t0);
 }
 
 /* cmpb: PowerPC 2.05 specification */