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tcg-i386: Tidy multiply. 

Define and use OPC_IMUL_GvEv{,Ib,Iz}.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2010-05-21 08:30:31 -07:00 committed by Aurelien Jarno
parent 9363dedbbb
commit 0566d38737
1 changed files with 6 additions and 3 deletions
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9
tcg/i386/tcg-target.c
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@ -166,6 +166,9 @@ static inline int tcg_target_const_match(tcg_target_long val,
#define OPC_CALL_Jz (0xe8) #define OPC_CALL_Jz (0xe8)
#define OPC_CMP_GvEv (OPC_ARITH_GvEv | (ARITH_CMP << 3)) #define OPC_CMP_GvEv (OPC_ARITH_GvEv | (ARITH_CMP << 3))
#define OPC_DEC_r32 (0x48) #define OPC_DEC_r32 (0x48)
#define OPC_IMUL_GvEv (0xaf | P_EXT)
#define OPC_IMUL_GvEvIb (0x6b)
#define OPC_IMUL_GvEvIz (0x69)
#define OPC_INC_r32 (0x40) #define OPC_INC_r32 (0x40)
#define OPC_JCC_long (0x80 | P_EXT) /* ... plus condition code */ #define OPC_JCC_long (0x80 | P_EXT) /* ... plus condition code */
#define OPC_JCC_short (0x70) /* ... plus condition code */ #define OPC_JCC_short (0x70) /* ... plus condition code */
@ -1157,14 +1160,14 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
int32_t val; int32_t val;
val = args[2]; val = args[2];
if (val == (int8_t)val) { if (val == (int8_t)val) {
tcg_out_modrm(s, 0x6b, args[0], args[0]); tcg_out_modrm(s, OPC_IMUL_GvEvIb, args[0], args[0]);
tcg_out8(s, val); tcg_out8(s, val);
} else { } else {
tcg_out_modrm(s, 0x69, args[0], args[0]); tcg_out_modrm(s, OPC_IMUL_GvEvIz, args[0], args[0]);
tcg_out32(s, val); tcg_out32(s, val);
} }
} else { } else {
tcg_out_modrm(s, 0xaf | P_EXT, args[0], args[2]); tcg_out_modrm(s, OPC_IMUL_GvEv, args[0], args[2]);
} }
break; break;
case INDEX_op_mulu2_i32: case INDEX_op_mulu2_i32: