From 5a2fc4d7384cdb0f802c8ad2bd97fe6860f22443 Mon Sep 17 00:00:00 2001 From: Oleg Endo Date: Sun, 1 May 2016 03:23:26 +0000 Subject: predicates.md (any_register_operand, [...]): Delete. gcc/ * config/sh/predicates.md (any_register_operand, zero_extend_operand, logical_reg_operand): Delete. (arith_operand, arith_reg_dest, arith_or_int_operand, cmpsi_operand, arith_reg_or_0_operand, arith_reg_or_0_or_1_operand, logical_operand, logical_and_operand, movsrc_no_disp_mem_operand): Rewrite using match_operand and match_test. (sh_const_vec, sh_1el_vec): Remove redundant checks. Declare local variables on their first use. Return bool values. * config/sh/sh.h (LOAD_EXTEND_OP): Update comment. * config/sh/sh.md (andsi3, iorsi3): Use arith_reg_dest for result and arith_reg_operand for input operand. Remove empty constraints. (xorsi3): Delete. (*xorsi3_compact): Rename to xorsi3. (zero_extendsi2): Use arith_reg_operand for input operand. (*zero_extendsi2_disp_mem): Update comment. (mov_nop): Delete. From-SVN: r235687 --- gcc/config/sh/predicates.md | 186 +++++++++++++++----------------------------- gcc/config/sh/sh.h | 5 +- gcc/config/sh/sh.md | 45 ++++------- 3 files changed, 77 insertions(+), 159 deletions(-) (limited to 'gcc/config/sh') diff --git a/gcc/config/sh/predicates.md b/gcc/config/sh/predicates.md index e050213..3e69d88 100644 --- a/gcc/config/sh/predicates.md +++ b/gcc/config/sh/predicates.md @@ -17,29 +17,6 @@ ;; along with GCC; see the file COPYING3. If not see ;; . -;; Like register_operand, but this predicate is defined with -;; define_special_predicate, not define_predicate. -(define_special_predicate "any_register_operand" - (match_code "subreg,reg") -{ - return register_operand (op, mode); -}) - -;; Returns 1 if OP is a valid source operand for an arithmetic insn. -(define_predicate "arith_operand" - (match_code "subreg,reg,const_int,truncate") -{ - return arith_reg_operand (op, mode) || satisfies_constraint_I08 (op); -}) - -;; Like above, but for DImode destinations: forbid paradoxical DImode -;; subregs, because this would lead to missing sign extensions when -;; truncating from DImode to SImode. -(define_predicate "arith_reg_dest" - (match_code "subreg,reg") -{ - return arith_reg_operand (op, mode); -}) ;; Returns 1 if OP is a normal arithmetic register. (define_predicate "arith_reg_operand" @@ -82,38 +59,36 @@ return 0; }) -;; Likewise arith_operand but always permits const_int. -(define_predicate "arith_or_int_operand" - (match_code "subreg,reg,const_int,const_vector") -{ - if (arith_operand (op, mode)) - return 1; - - if (CONST_INT_P (op)) - return 1; - - return 0; -}) +;; Like above, but for DImode destinations: forbid paradoxical DImode +;; subregs, because this would lead to missing sign extensions when +;; truncating from DImode to SImode. +(define_predicate "arith_reg_dest" + (and (match_code "subreg,reg") + (match_operand 0 "arith_reg_operand"))) -;; Returns 1 if OP is a valid source operand for a compare insn. -(define_predicate "arith_reg_or_0_operand" - (match_code "subreg,reg,const_int,const_vector") -{ - if (arith_reg_operand (op, mode)) - return 1; +;; Returns true if OP is a valid source operand for an arithmetic insn. +(define_predicate "arith_operand" + (and (match_code "subreg,reg,const_int,truncate") + (ior (match_operand 0 "arith_reg_operand") + (match_test "satisfies_constraint_I08 (op)")))) - if (satisfies_constraint_Z (op)) - return 1; +;; Likewise arith_operand but always permits const_int. +(define_predicate "arith_or_int_operand" + (and (match_code "subreg,reg,const_int,const_vector") + (ior (match_operand 0 "arith_operand") + (match_operand 0 "const_int_operand")))) - return 0; -}) +;; Returns true if OP is a valid source operand for a compare insn. +(define_predicate "arith_reg_or_0_operand" + (and (match_code "subreg,reg,const_int,const_vector") + (ior (match_operand 0 "arith_reg_operand") + (match_test "satisfies_constraint_Z (op)")))) ;; Returns true if OP is either a register or constant 0 or constant 1. (define_predicate "arith_reg_or_0_or_1_operand" - (match_code "subreg,reg,const_int,const_vector") -{ - return arith_reg_or_0_operand (op, mode) || satisfies_constraint_M (op); -}) + (and (match_code "subreg,reg,const_int,const_vector") + (ior (match_operand 0 "arith_reg_or_0_operand") + (match_test "satisfies_constraint_M (op)")))) ;; Returns true if OP is a suitable constant for the minimum value of a ;; clips.b or clips.w insn. @@ -136,18 +111,6 @@ (ior (match_test "INTVAL (op) == 255") (match_test "INTVAL (op) == 65535")))) -;; Returns true if OP is an operand that can be used as the first operand in -;; the cstoresi4 expander pattern. -(define_predicate "cmpsi_operand" - (match_code "subreg,reg,const_int") -{ - if (REG_P (op) && REGNO (op) == T_REG - && GET_MODE (op) == SImode - && TARGET_SH1) - return 1; - return arith_operand (op, mode); -}) - ;; Returns true if OP is a floating point register that can be used in floating ;; point arithmetic operations. (define_predicate "fp_arith_reg_operand" @@ -274,10 +237,6 @@ (ior (match_test "GET_MODE (op) == QImode") (match_test "GET_MODE (op) == HImode")))) -;; Returns 1 if the operand can be used in a zero_extend. -(define_predicate "zero_extend_operand" - (match_operand 0 "arith_reg_operand")) - ;; Returns 1 if OP can be source of a simple move operation. Same as ;; general_operand, but a LABEL_REF is valid, PRE_DEC is invalid as ;; are subregs of system registers. @@ -376,12 +335,11 @@ return general_operand (op, mode); }) -;; Returns 1 if OP is a MEM that does not use displacement addressing. +;; Returns true if OP is a MEM that does not use displacement addressing. (define_predicate "movsrc_no_disp_mem_operand" - (match_code "mem") -{ - return general_movsrc_operand (op, mode) && satisfies_constraint_Snd (op); -}) + (and (match_code "mem") + (match_operand 0 "general_movsrc_operand") + (match_test "satisfies_constraint_Snd (op)"))) ;; Returns 1 if OP can be a destination of a move. Same as ;; general_operand, but no preinc allowed. @@ -510,12 +468,11 @@ && sh_legitimate_index_p (mode, XEXP (plus0_rtx, 1), TARGET_SH2A, true); }) -;; Returns 1 if OP is a valid source operand for a logical operation. +;; Returns true if OP is a valid source operand for a logical operation. (define_predicate "logical_operand" - (match_code "subreg,reg,const_int") -{ - return arith_reg_operand (op, mode) || satisfies_constraint_K08 (op); -}) + (and (match_code "subreg,reg,const_int") + (ior (match_operand 0 "arith_reg_operand") + (match_test "satisfies_constraint_K08 (op)")))) ;; Returns true if OP is a valid constant source operand for a logical ;; operations tst/and/or/xor #imm,r0. @@ -526,36 +483,23 @@ ;; Like logical_operand but allows additional constant values which can be ;; done with zero extensions. Used for the second operand of and insns. (define_predicate "logical_and_operand" - (match_code "subreg,reg,const_int") -{ - return logical_operand (op, mode) || satisfies_constraint_Jmb (op) - || satisfies_constraint_Jmw (op); -}) + (and (match_code "subreg,reg,const_int") + (ior (match_operand 0 "logical_operand") + (match_test "satisfies_constraint_Jmb (op)") + (match_test "satisfies_constraint_Jmw (op)")))) ;; Returns true if OP is a logical operator. (define_predicate "logical_operator" (match_code "and,ior,xor")) -(define_predicate "logical_reg_operand" - (match_code "subreg,reg") -{ - return arith_reg_operand (op, mode); -}) - ;; Returns true if OP is a constant vector. (define_predicate "sh_const_vec" (match_code "const_vector") { - int i; - - if (GET_CODE (op) != CONST_VECTOR - || (GET_MODE (op) != mode && mode != VOIDmode)) - return 0; - i = XVECLEN (op, 0) - 1; - for (; i >= 0; i--) + for (int i = XVECLEN (op, 0) - 1; i >= 0; i--) if (!CONST_INT_P (XVECEXP (op, 0, i))) - return 0; - return 1; + return false; + return true; }) ;; Determine if OP is a constant vector matching MODE with only one @@ -564,32 +508,25 @@ (define_predicate "sh_1el_vec" (match_code "const_vector") { - int unit_size; - int i, last, least, sign_ix; - rtx sign; - - if (GET_CODE (op) != CONST_VECTOR - || (GET_MODE (op) != mode && mode != VOIDmode)) - return 0; /* Determine numbers of last and of least significant elements. */ - last = XVECLEN (op, 0) - 1; - least = TARGET_LITTLE_ENDIAN ? 0 : last; + int last = XVECLEN (op, 0) - 1; + int least = TARGET_LITTLE_ENDIAN ? 0 : last; if (!CONST_INT_P (XVECEXP (op, 0, least))) - return 0; - sign_ix = least; + return false; + int sign_ix = least; if (GET_MODE_UNIT_SIZE (mode) == 1) sign_ix = TARGET_LITTLE_ENDIAN ? 1 : last - 1; if (!CONST_INT_P (XVECEXP (op, 0, sign_ix))) - return 0; - unit_size = GET_MODE_UNIT_SIZE (GET_MODE (op)); - sign = (INTVAL (XVECEXP (op, 0, sign_ix)) >> (unit_size * BITS_PER_UNIT - 1) - ? constm1_rtx : const0_rtx); - i = XVECLEN (op, 0) - 1; + return false; + int unit_size = GET_MODE_UNIT_SIZE (GET_MODE (op)); + rtx sign = INTVAL (XVECEXP (op, 0, sign_ix)) >> (unit_size * BITS_PER_UNIT - 1) + ? constm1_rtx : const0_rtx; + int i = XVECLEN (op, 0) - 1; do if (i != least && i != sign_ix && XVECEXP (op, 0, i) != sign) return 0; while (--i); - return 1; + return true; }) ;; Returns true if OP is a vector which is composed of one element that is @@ -597,27 +534,21 @@ (define_predicate "sh_rep_vec" (match_code "const_vector,parallel") { - int i; - rtx x, y; - - if ((GET_CODE (op) != CONST_VECTOR && GET_CODE (op) != PARALLEL) - || (GET_MODE (op) != mode && mode != VOIDmode)) - return 0; - i = XVECLEN (op, 0) - 2; - x = XVECEXP (op, 0, i + 1); + int i = XVECLEN (op, 0) - 2; + rtx x = XVECEXP (op, 0, i + 1); if (GET_MODE_UNIT_SIZE (mode) == 1) { - y = XVECEXP (op, 0, i); + rtx y = XVECEXP (op, 0, i); for (i -= 2; i >= 0; i -= 2) if (! rtx_equal_p (XVECEXP (op, 0, i + 1), x) || ! rtx_equal_p (XVECEXP (op, 0, i), y)) - return 0; + return false; } else for (; i >= 0; i--) if (XVECEXP (op, 0, i) != x) - return 0; - return 1; + return false; + return true; }) ;; Returns true if OP is a valid shift count operand for shift operations. @@ -745,6 +676,13 @@ } }) +;; Returns true if OP is an operand that can be used as the first operand in +;; the cstoresi4 expander pattern. +(define_predicate "cmpsi_operand" + (and (match_code "subreg,reg,const_int") + (ior (match_operand:SI 0 "t_reg_operand") + (match_operand 0 "arith_operand")))) + ;; A predicate that returns true if OP is a valid construct around the T bit ;; that can be used as an operand for conditional branches. (define_predicate "cbranch_treg_value" diff --git a/gcc/config/sh/sh.h b/gcc/config/sh/sh.h index 31d75e8..719ebd3 100644 --- a/gcc/config/sh/sh.h +++ b/gcc/config/sh/sh.h @@ -1523,10 +1523,7 @@ struct sh_args { /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD will either zero-extend or sign-extend. The value of this macro should be the code that says which one of the two operations is implicitly - done, UNKNOWN if none. - For SHmedia, we can truncate to QImode easier using zero extension. - FP registers can load SImode values, but don't implicitly sign-extend - them to DImode. */ + done, UNKNOWN if none. */ #define LOAD_EXTEND_OP(MODE) ((MODE) != SImode ? SIGN_EXTEND : UNKNOWN) /* Define if loading short immediate values into registers sign extends. */ diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md index ad29426..f019d40 100644 --- a/gcc/config/sh/sh.md +++ b/gcc/config/sh/sh.md @@ -2823,14 +2823,14 @@ ;; ------------------------------------------------------------------------- (define_expand "andsi3" - [(set (match_operand:SI 0 "arith_reg_operand" "") - (and:SI (match_operand:SI 1 "logical_reg_operand" "") - (match_operand:SI 2 "logical_and_operand" "")))] + [(set (match_operand:SI 0 "arith_reg_dest") + (and:SI (match_operand:SI 1 "arith_reg_operand") + (match_operand:SI 2 "logical_and_operand")))] "" { /* If it is possible to turn the and insn into a zero extension already, redundant zero extensions will be folded, which results - in better code. + in better code. Ideally the splitter of *andsi_compact would be enough, if redundant zero extensions were detected after the combine pass, which does not happen at the moment. */ @@ -2880,11 +2880,9 @@ [(set_attr "type" "arith")]) (define_expand "iorsi3" - [(set (match_operand:SI 0 "arith_reg_operand" "") - (ior:SI (match_operand:SI 1 "logical_reg_operand" "") - (match_operand:SI 2 "logical_operand" "")))] - "" - "") + [(set (match_operand:SI 0 "arith_reg_dest") + (ior:SI (match_operand:SI 1 "arith_reg_operand") + (match_operand:SI 2 "logical_operand")))]) (define_insn "*iorsi3_compact" [(set (match_operand:SI 0 "arith_reg_dest" "=r,z") @@ -2903,14 +2901,7 @@ "bset %V2,%0" [(set_attr "type" "arith")]) -(define_expand "xorsi3" - [(set (match_operand:SI 0 "arith_reg_operand" "") - (xor:SI (match_operand:SI 1 "logical_reg_operand" "") - (match_operand:SI 2 "logical_operand" "")))] - "" - "") - -(define_insn "*xorsi3_compact" +(define_insn "xorsi3" [(set (match_operand:SI 0 "arith_reg_dest" "=z,r") (xor:SI (match_operand:SI 1 "arith_reg_operand" "%0,0") (match_operand:SI 2 "logical_operand" "K08,r")))] @@ -4784,7 +4775,7 @@ (define_expand "zero_extendsi2" [(set (match_operand:SI 0 "arith_reg_dest") - (zero_extend:SI (match_operand:QIHI 1 "zero_extend_operand")))]) + (zero_extend:SI (match_operand:QIHI 1 "arith_reg_operand")))]) (define_insn_and_split "*zero_extendsi2_compact" [(set (match_operand:SI 0 "arith_reg_dest" "=r") @@ -4819,12 +4810,11 @@ ;; the displacement value to zero. However, doing so too early results in ;; missed opportunities for other optimizations such as post-inc or index ;; addressing loads. -;; We don't allow the zero extending loads to match during RTL expansion -;; (see zero_extend_operand predicate), as this would pessimize other -;; optimization opportunities such as bit extractions of unsigned mems, -;; where the zero extraction is irrelevant. If the zero extracting mem -;; loads are emitted early it will be more difficult to change them back -;; to sign extending loads (which are preferred). +;; We don't allow the zero extending loads to match during RTL expansion, +;; as this would pessimize other optimization opportunities such as bit +;; extractions of unsigned mems, where the zero extraction is irrelevant. +;; If the zero extracting mem loads are emitted early it will be more +;; difficult to change them back to sign extending loads (which are preferred). ;; The combine pass will also try to combine mem loads and zero extends, ;; which is prevented by 'sh_legitimate_combined_insn'. (define_insn "*zero_extendsi2_disp_mem" @@ -6269,13 +6259,6 @@ } }) -(define_insn "mov_nop" - [(set (match_operand 0 "any_register_operand" "") (match_dup 0))] - "TARGET_SH2E" - "" - [(set_attr "length" "0") - (set_attr "type" "nil")]) - (define_expand "reload_insf__frn" [(parallel [(set (match_operand:SF 0 "register_operand" "=a") (match_operand:SF 1 "immediate_operand" "FQ")) -- cgit v1.1