diff options
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index f16b42ab884..79c5f1a740c 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -3874,10 +3874,29 @@ [(set_attr "type" "imovx") (set_attr "mode" "SI")]) +(define_insn_and_split "*zext<mode>_doubleword_and" + [(set (match_operand:DI 0 "register_operand" "=&<r>") + (zero_extend:DI (match_operand:SWI12 1 "nonimmediate_operand" "<r>m")))] + "!TARGET_64BIT && TARGET_STV && TARGET_SSE2 + && TARGET_ZERO_EXTEND_WITH_AND && optimize_function_for_speed_p (cfun)" + "#" + "&& reload_completed && GENERAL_REG_P (operands[0])" + [(set (match_dup 2) (const_int 0))] +{ + split_double_mode (DImode, &operands[0], 1, &operands[0], &operands[2]); + + emit_move_insn (operands[0], const0_rtx); + + gcc_assert (!TARGET_PARTIAL_REG_STALL); + emit_insn (gen_movstrict<mode> + (gen_lowpart (<MODE>mode, operands[0]), operands[1])); +}) + (define_insn_and_split "*zext<mode>_doubleword" [(set (match_operand:DI 0 "register_operand" "=r") (zero_extend:DI (match_operand:SWI12 1 "nonimmediate_operand" "<r>m")))] - "!TARGET_64BIT && TARGET_STV && TARGET_SSE2" + "!TARGET_64BIT && TARGET_STV && TARGET_SSE2 + && !(TARGET_ZERO_EXTEND_WITH_AND && optimize_function_for_speed_p (cfun))" "#" "&& reload_completed && GENERAL_REG_P (operands[0])" [(set (match_dup 0) (zero_extend:SI (match_dup 1))) |