diff options
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 5696c2645a7..cdadf5d0e71 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -9591,10 +9591,11 @@ [(match_scratch:SI 1 "r") (set (match_operand:SI 0 "memory_operand" "") (const_int 0))] - "! optimize_size && get_attr_length (insn) >= ix86_cost->large_insn - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + "! optimize_size && ! TARGET_USE_MOV0 - && TARGET_SPLIT_LONG_MOVES" + && TARGET_SPLIT_LONG_MOVES + && get_attr_length (insn) >= ix86_cost->large_insn + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 1) (const_int 0)) (clobber (reg:CC 17))]) (set (match_dup 0) (match_dup 1))] @@ -9604,10 +9605,11 @@ [(match_scratch:HI 1 "r") (set (match_operand:HI 0 "memory_operand" "") (const_int 0))] - "! optimize_size && get_attr_length (insn) >= ix86_cost->large_insn - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + "! optimize_size && ! TARGET_USE_MOV0 - && TARGET_SPLIT_LONG_MOVES" + && TARGET_SPLIT_LONG_MOVES + && get_attr_length (insn) >= ix86_cost->large_insn + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 2) (const_int 0)) (clobber (reg:CC 17))]) (set (match_dup 0) (match_dup 1))] @@ -9617,10 +9619,11 @@ [(match_scratch:QI 1 "q") (set (match_operand:QI 0 "memory_operand" "") (const_int 0))] - "! optimize_size && get_attr_length (insn) >= ix86_cost->large_insn - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + "! optimize_size && ! TARGET_USE_MOV0 - && TARGET_SPLIT_LONG_MOVES" + && TARGET_SPLIT_LONG_MOVES + && get_attr_length (insn) >= ix86_cost->large_insn + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 2) (const_int 0)) (clobber (reg:CC 17))]) (set (match_dup 0) (match_dup 1))] @@ -9630,8 +9633,9 @@ [(match_scratch:SI 2 "r") (set (match_operand:SI 0 "memory_operand" "") (match_operand:SI 1 "immediate_operand" ""))] - "! optimize_size && get_attr_length (insn) >= ix86_cost->large_insn - && TARGET_SPLIT_LONG_MOVES" + "! optimize_size + && get_attr_length (insn) >= ix86_cost->large_insn + && TARGET_SPLIT_LONG_MOVES" [(set (match_dup 2) (match_dup 1)) (set (match_dup 0) (match_dup 2))] "") @@ -9675,14 +9679,14 @@ ;; represented using a modRM byte. The XOR replacement is long decoded, ;; so this split helps here as well. ;; -;; Note: Can't do this as a regular split because reg_dead_p assumes -;; resource info is live. +;; Note: Can't do this as a regular split because we can't get proper +;; lifetime information then. (define_peephole2 [(set (match_operand:SI 0 "nonimmediate_operand" "=rm") (not:SI (match_operand:SI 1 "nonimmediate_operand" "0")))] "!optimize_size - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + && peep2_regno_dead_p (0, FLAGS_REG) && ((TARGET_PENTIUM && (GET_CODE (operands[0]) != MEM || !memory_displacement_operand (operands[0], SImode))) @@ -9696,7 +9700,7 @@ [(set (match_operand:HI 0 "nonimmediate_operand" "=rm") (not:HI (match_operand:HI 1 "nonimmediate_operand" "0")))] "!optimize_size - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + && peep2_regno_dead_p (0, FLAGS_REG) && ((TARGET_PENTIUM && (GET_CODE (operands[0]) != MEM || !memory_displacement_operand (operands[0], HImode))) @@ -9710,7 +9714,7 @@ [(set (match_operand:QI 0 "nonimmediate_operand" "=rm") (not:QI (match_operand:QI 1 "nonimmediate_operand" "0")))] "!optimize_size - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG)) + && peep2_regno_dead_p (0, FLAGS_REG) && ((TARGET_PENTIUM && (GET_CODE (operands[0]) != MEM || !memory_displacement_operand (operands[0], QImode))) @@ -9873,7 +9877,7 @@ || GET_MODE (operands[0]) == HImode || GET_MODE (operands[0]) == SImode) && (! TARGET_USE_MOV0 || optimize_size) - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG))" + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 0) (const_int 0)) (clobber (reg:CC 17))])] "operands[0] = gen_rtx_REG (SImode, true_regnum (operands[0]));") @@ -9885,7 +9889,7 @@ "(GET_MODE (operands[0]) == HImode || GET_MODE (operands[0]) == SImode) && (optimize_size || TARGET_PENTIUM) - && reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG))" + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 0) (const_int -1)) (clobber (reg:CC 17))])] "operands[0] = gen_rtx_REG (SImode, true_regnum (operands[0]));") @@ -9896,7 +9900,7 @@ [(set (match_operand:SI 0 "register_operand" "") (plus:SI (match_dup 0) (match_operand:SI 1 "nonmemory_operand" "")))] - "reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG))" + "peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1))) (clobber (reg:CC 17))])] "") @@ -9905,7 +9909,8 @@ [(set (match_operand:SI 0 "register_operand" "") (mult:SI (match_dup 0) (match_operand:SI 1 "immediate_operand" "")))] - "reg_dead_p (insn, gen_rtx_REG (CCmode, FLAGS_REG))" + "exact_log2 (INTVAL (operands[1])) >= 0 + && peep2_regno_dead_p (0, FLAGS_REG)" [(parallel [(set (match_dup 0) (ashift:SI (match_dup 0) (match_dup 2))) (clobber (reg:CC 17))])] "operands[2] = GEN_INT (exact_log2 (INTVAL (operands[1])));") |