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Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index a6e2946584b..2777e9c8617 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -10474,6 +10474,39 @@ PUT_CODE (operands[0], reverse_condition (GET_CODE (operands[0]))); }) +;; Like *jcc_bt<mode>, but expect a SImode operand 2 instead of QImode +;; zero extended to SImode. +(define_insn_and_split "*jcc_bt<mode>_1" + [(set (pc) + (if_then_else (match_operator 0 "bt_comparison_operator" + [(zero_extract:SWI48 + (match_operand:SWI48 1 "register_operand" "r") + (const_int 1) + (match_operand:SI 2 "register_operand" "r")) + (const_int 0)]) + (label_ref (match_operand 3)) + (pc))) + (clobber (reg:CC FLAGS_REG))] + "TARGET_USE_BT || optimize_function_for_size_p (cfun)" + "#" + "&& 1" + [(set (reg:CCC FLAGS_REG) + (compare:CCC + (zero_extract:SWI48 + (match_dup 1) + (const_int 1) + (match_dup 2)) + (const_int 0))) + (set (pc) + (if_then_else (match_op_dup 0 [(reg:CCC FLAGS_REG) (const_int 0)]) + (label_ref (match_dup 3)) + (pc)))] +{ + operands[2] = simplify_gen_subreg (<MODE>mode, operands[2], SImode, 0); + + PUT_CODE (operands[0], reverse_condition (GET_CODE (operands[0]))); +}) + ;; Avoid useless masking of bit offset operand. "and" in SImode is correct ;; also for DImode, this is what combine produces. (define_insn_and_split "*jcc_bt<mode>_mask" |