From 7990496dcbdec56b192b8a0867f9fa26812b3dc0 Mon Sep 17 00:00:00 2001 From: Laurent Desnogues Date: Sun, 13 Sep 2009 14:27:31 +0200 Subject: [PATCH] ARM back-end: Use sxt[bh] instructions for ext{8, 6}s This patch uses sxtb for ext8s_i32 and sxth for ext16s_i32 in ARM back-end. Signed-off-by: Laurent Desnogues Signed-off-by: Aurelien Jarno --- tcg/arm/tcg-target.c | 10 ++++++++++ 1 file changed, 10 insertions(+) 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: -- 2.7.4