diff options
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 57a90db..6fed9b8 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -12300,6 +12300,34 @@ ix86_expand_clear (operands[3]); }) +(define_peephole2 + [(set (reg FLAGS_REG) (match_operand 0)) + (parallel [(set (reg FLAGS_REG) (match_operand 1)) + (match_operand 5)]) + (set (match_operand:QI 2 "register_operand") + (match_operator:QI 3 "ix86_comparison_operator" + [(reg FLAGS_REG) (const_int 0)])) + (set (match_operand 4 "any_QIreg_operand") + (zero_extend (match_dup 2)))] + "(peep2_reg_dead_p (4, operands[2]) + || operands_match_p (operands[2], operands[4])) + && ! reg_overlap_mentioned_p (operands[4], operands[0]) + && ! reg_overlap_mentioned_p (operands[4], operands[1]) + && ! reg_set_p (operands[4], operands[5]) + && refers_to_regno_p (FLAGS_REG, operands[1], (rtx *)NULL) + && peep2_regno_dead_p (0, FLAGS_REG)" + [(set (match_dup 6) (match_dup 0)) + (parallel [(set (match_dup 7) (match_dup 1)) + (match_dup 5)]) + (set (strict_low_part (match_dup 8)) + (match_dup 3))] +{ + operands[6] = gen_rtx_REG (GET_MODE (operands[0]), FLAGS_REG); + operands[7] = gen_rtx_REG (GET_MODE (operands[1]), FLAGS_REG); + operands[8] = gen_lowpart (QImode, operands[4]); + ix86_expand_clear (operands[4]); +}) + ;; Similar, but match zero extend with andsi3. (define_peephole2 @@ -12345,6 +12373,35 @@ operands[6] = gen_lowpart (QImode, operands[3]); ix86_expand_clear (operands[3]); }) + +(define_peephole2 + [(set (reg FLAGS_REG) (match_operand 0)) + (parallel [(set (reg FLAGS_REG) (match_operand 1)) + (match_operand 5)]) + (set (match_operand:QI 2 "register_operand") + (match_operator:QI 3 "ix86_comparison_operator" + [(reg FLAGS_REG) (const_int 0)])) + (parallel [(set (match_operand 4 "any_QIreg_operand") + (zero_extend (match_dup 2))) + (clobber (reg:CC FLAGS_REG))])] + "(peep2_reg_dead_p (4, operands[2]) + || operands_match_p (operands[2], operands[4])) + && ! reg_overlap_mentioned_p (operands[4], operands[0]) + && ! reg_overlap_mentioned_p (operands[4], operands[1]) + && ! reg_set_p (operands[4], operands[5]) + && refers_to_regno_p (FLAGS_REG, operands[1], (rtx *)NULL) + && peep2_regno_dead_p (0, FLAGS_REG)" + [(set (match_dup 6) (match_dup 0)) + (parallel [(set (match_dup 7) (match_dup 1)) + (match_dup 5)]) + (set (strict_low_part (match_dup 8)) + (match_dup 3))] +{ + operands[6] = gen_rtx_REG (GET_MODE (operands[0]), FLAGS_REG); + operands[7] = gen_rtx_REG (GET_MODE (operands[1]), FLAGS_REG); + operands[8] = gen_lowpart (QImode, operands[4]); + ix86_expand_clear (operands[4]); +}) ;; Call instructions. |