diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/i386/tcg-target.h | 12 | ||||
| -rw-r--r-- | tcg/i386/tcg-target.inc.c | 38 |
2 files changed, 47 insertions, 3 deletions
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 7625188091..dc19c47be1 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -94,8 +94,8 @@ extern bool have_bmi1; #define TCG_TARGET_HAS_nand_i32 0 #define TCG_TARGET_HAS_nor_i32 0 #define TCG_TARGET_HAS_deposit_i32 1 -#define TCG_TARGET_HAS_extract_i32 0 -#define TCG_TARGET_HAS_sextract_i32 0 +#define TCG_TARGET_HAS_extract_i32 1 +#define TCG_TARGET_HAS_sextract_i32 1 #define TCG_TARGET_HAS_movcond_i32 1 #define TCG_TARGET_HAS_add2_i32 1 #define TCG_TARGET_HAS_sub2_i32 1 @@ -126,7 +126,7 @@ extern bool have_bmi1; #define TCG_TARGET_HAS_nand_i64 0 #define TCG_TARGET_HAS_nor_i64 0 #define TCG_TARGET_HAS_deposit_i64 1 -#define TCG_TARGET_HAS_extract_i64 0 +#define TCG_TARGET_HAS_extract_i64 1 #define TCG_TARGET_HAS_sextract_i64 0 #define TCG_TARGET_HAS_movcond_i64 1 #define TCG_TARGET_HAS_add2_i64 1 @@ -142,6 +142,12 @@ extern bool have_bmi1; ((ofs) == 0 && (len) == 16)) #define TCG_TARGET_deposit_i64_valid TCG_TARGET_deposit_i32_valid +/* Check for the possibility of high-byte extraction and, for 64-bit, + zero-extending 32-bit right-shift. */ +#define TCG_TARGET_extract_i32_valid(ofs, len) ((ofs) == 8 && (len) == 8) +#define TCG_TARGET_extract_i64_valid(ofs, len) \ + (((ofs) == 8 && (len) == 8) || ((ofs) + (len)) == 32) + #if TCG_TARGET_REG_BITS == 64 # define TCG_AREG0 TCG_REG_R14 #else diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c index eeb1777bbb..39f62bd6c5 100644 --- a/tcg/i386/tcg-target.inc.c +++ b/tcg/i386/tcg-target.inc.c @@ -2143,6 +2143,40 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, } break; + case INDEX_op_extract_i64: + if (args[2] + args[3] == 32) { + /* This is a 32-bit zero-extending right shift. */ + tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]); + tcg_out_shifti(s, SHIFT_SHR, args[0], args[2]); + break; + } + /* FALLTHRU */ + case INDEX_op_extract_i32: + /* On the off-chance that we can use the high-byte registers. + Otherwise we emit the same ext16 + shift pattern that we + would have gotten from the normal tcg-op.c expansion. */ + tcg_debug_assert(args[2] == 8 && args[3] == 8); + if (args[1] < 4 && args[0] < 8) { + tcg_out_modrm(s, OPC_MOVZBL, args[0], args[1] + 4); + } else { + tcg_out_ext16u(s, args[0], args[1]); + tcg_out_shifti(s, SHIFT_SHR, args[0], 8); + } + break; + + case INDEX_op_sextract_i32: + /* We don't implement sextract_i64, as we cannot sign-extend to + 64-bits without using the REX prefix that explicitly excludes + access to the high-byte registers. */ + tcg_debug_assert(args[2] == 8 && args[3] == 8); + if (args[1] < 4 && args[0] < 8) { + tcg_out_modrm(s, OPC_MOVSBL, args[0], args[1] + 4); + } else { + tcg_out_ext16s(s, args[0], args[1], 0); + tcg_out_shifti(s, SHIFT_SAR, args[0], 8); + } + break; + case INDEX_op_mb: tcg_out_mb(s, args[0]); break; @@ -2204,6 +2238,9 @@ static const TCGTargetOpDef x86_op_defs[] = { { INDEX_op_setcond_i32, { "q", "r", "ri" } }, { INDEX_op_deposit_i32, { "Q", "0", "Q" } }, + { INDEX_op_extract_i32, { "r", "r" } }, + { INDEX_op_sextract_i32, { "r", "r" } }, + { INDEX_op_movcond_i32, { "r", "r", "ri", "r", "0" } }, { INDEX_op_mulu2_i32, { "a", "d", "a", "r" } }, @@ -2265,6 +2302,7 @@ static const TCGTargetOpDef x86_op_defs[] = { { INDEX_op_extu_i32_i64, { "r", "r" } }, { INDEX_op_deposit_i64, { "Q", "0", "Q" } }, + { INDEX_op_extract_i64, { "r", "r" } }, { INDEX_op_movcond_i64, { "r", "r", "re", "r", "0" } }, { INDEX_op_mulu2_i64, { "a", "d", "a", "r" } }, |