diff options
Diffstat (limited to 'tcg/tcg-op.c')
| -rw-r--r-- | tcg/tcg-op.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index b17f03fd03..1927e53123 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -561,6 +561,64 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2, tcg_temp_free_i32(t1); } +void tcg_gen_deposit_z_i32(TCGv_i32 ret, TCGv_i32 arg, + unsigned int ofs, unsigned int len) +{ + tcg_debug_assert(ofs < 32); + tcg_debug_assert(len > 0); + tcg_debug_assert(len <= 32); + tcg_debug_assert(ofs + len <= 32); + + if (ofs + len == 32) { + tcg_gen_shli_i32(ret, arg, ofs); + } else if (ofs == 0) { + tcg_gen_andi_i32(ret, arg, (1u << len) - 1); + } else if (TCG_TARGET_HAS_deposit_i32 + && TCG_TARGET_deposit_i32_valid(ofs, len)) { + TCGv_i32 zero = tcg_const_i32(0); + tcg_gen_op5ii_i32(INDEX_op_deposit_i32, ret, zero, arg, ofs, len); + tcg_temp_free_i32(zero); + } else { + /* To help two-operand hosts we prefer to zero-extend first, + which allows ARG to stay live. */ + switch (len) { + case 16: + if (TCG_TARGET_HAS_ext16u_i32) { + tcg_gen_ext16u_i32(ret, arg); + tcg_gen_shli_i32(ret, ret, ofs); + return; + } + break; + case 8: + if (TCG_TARGET_HAS_ext8u_i32) { + tcg_gen_ext8u_i32(ret, arg); + tcg_gen_shli_i32(ret, ret, ofs); + return; + } + break; + } + /* Otherwise prefer zero-extension over AND for code size. */ + switch (ofs + len) { + case 16: + if (TCG_TARGET_HAS_ext16u_i32) { + tcg_gen_shli_i32(ret, arg, ofs); + tcg_gen_ext16u_i32(ret, ret); + return; + } + break; + case 8: + if (TCG_TARGET_HAS_ext8u_i32) { + tcg_gen_shli_i32(ret, arg, ofs); + tcg_gen_ext8u_i32(ret, ret); + return; + } + break; + } + tcg_gen_andi_i32(ret, arg, (1u << len) - 1); + tcg_gen_shli_i32(ret, ret, ofs); + } +} + void tcg_gen_extract_i32(TCGv_i32 ret, TCGv_i32 arg, unsigned int ofs, unsigned int len) { @@ -1762,6 +1820,91 @@ void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2, tcg_temp_free_i64(t1); } +void tcg_gen_deposit_z_i64(TCGv_i64 ret, TCGv_i64 arg, + unsigned int ofs, unsigned int len) +{ + tcg_debug_assert(ofs < 64); + tcg_debug_assert(len > 0); + tcg_debug_assert(len <= 64); + tcg_debug_assert(ofs + len <= 64); + + if (ofs + len == 64) { + tcg_gen_shli_i64(ret, arg, ofs); + } else if (ofs == 0) { + tcg_gen_andi_i64(ret, arg, (1ull << len) - 1); + } else if (TCG_TARGET_HAS_deposit_i64 + && TCG_TARGET_deposit_i64_valid(ofs, len)) { + TCGv_i64 zero = tcg_const_i64(0); + tcg_gen_op5ii_i64(INDEX_op_deposit_i64, ret, zero, arg, ofs, len); + tcg_temp_free_i64(zero); + } else { + if (TCG_TARGET_REG_BITS == 32) { + if (ofs >= 32) { + tcg_gen_deposit_z_i32(TCGV_HIGH(ret), TCGV_LOW(arg), + ofs - 32, len); + tcg_gen_movi_i32(TCGV_LOW(ret), 0); + return; + } + if (ofs + len <= 32) { + tcg_gen_deposit_z_i32(TCGV_LOW(ret), TCGV_LOW(arg), ofs, len); + tcg_gen_movi_i32(TCGV_HIGH(ret), 0); + return; + } + } + /* To help two-operand hosts we prefer to zero-extend first, + which allows ARG to stay live. */ + switch (len) { + case 32: + if (TCG_TARGET_HAS_ext32u_i64) { + tcg_gen_ext32u_i64(ret, arg); + tcg_gen_shli_i64(ret, ret, ofs); + return; + } + break; + case 16: + if (TCG_TARGET_HAS_ext16u_i64) { + tcg_gen_ext16u_i64(ret, arg); + tcg_gen_shli_i64(ret, ret, ofs); + return; + } + break; + case 8: + if (TCG_TARGET_HAS_ext8u_i64) { + tcg_gen_ext8u_i64(ret, arg); + tcg_gen_shli_i64(ret, ret, ofs); + return; + } + break; + } + /* Otherwise prefer zero-extension over AND for code size. */ + switch (ofs + len) { + case 32: + if (TCG_TARGET_HAS_ext32u_i64) { + tcg_gen_shli_i64(ret, arg, ofs); + tcg_gen_ext32u_i64(ret, ret); + return; + } + break; + case 16: + if (TCG_TARGET_HAS_ext16u_i64) { + tcg_gen_shli_i64(ret, arg, ofs); + tcg_gen_ext16u_i64(ret, ret); + return; + } + break; + case 8: + if (TCG_TARGET_HAS_ext8u_i64) { + tcg_gen_shli_i64(ret, arg, ofs); + tcg_gen_ext8u_i64(ret, ret); + return; + } + break; + } + tcg_gen_andi_i64(ret, arg, (1ull << len) - 1); + tcg_gen_shli_i64(ret, ret, ofs); + } +} + void tcg_gen_extract_i64(TCGv_i64 ret, TCGv_i64 arg, unsigned int ofs, unsigned int len) { |