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[Qemu-commits] [COMMIT 7990496] ARM back-end: Use sxt[bh] instructions f
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 7990496] ARM back-end: Use sxt[bh] instructions for ext{8, 6}s |
Date: |
Sat, 26 Sep 2009 19:31:57 -0000 |
From: Laurent Desnogues <address@hidden>
This patch uses sxtb for ext8s_i32 and sxth for ext16s_i32 in ARM back-end.
Signed-off-by: Laurent Desnogues <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index 59e89d4..f8d626d 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1547,16 +1547,26 @@ static inline void tcg_out_op(TCGContext *s, int opc,
break;
case INDEX_op_ext8s_i32:
+#ifdef __ARM_ARCH_7A__
+ /* sxtb */
+ tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]);
+#else
tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
args[0], 0, args[1], SHIFT_IMM_LSL(24));
tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
args[0], 0, args[0], SHIFT_IMM_ASR(24));
+#endif
break;
case INDEX_op_ext16s_i32:
+#ifdef __ARM_ARCH_7A__
+ /* sxth */
+ tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]);
+#else
tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
args[0], 0, args[1], SHIFT_IMM_LSL(16));
tcg_out_dat_reg(s, COND_AL, ARITH_MOV,
args[0], 0, args[0], SHIFT_IMM_ASR(16));
+#endif
break;
default:
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Anthony Liguori <=