diff options
Diffstat (limited to 'gcc-4.8/gcc/config/rs6000/predicates.md')
| -rw-r--r-- | gcc-4.8/gcc/config/rs6000/predicates.md | 319 |
1 files changed, 318 insertions, 1 deletions
diff --git a/gcc-4.8/gcc/config/rs6000/predicates.md b/gcc-4.8/gcc/config/rs6000/predicates.md index 07944db10..0659e066e 100644 --- a/gcc-4.8/gcc/config/rs6000/predicates.md +++ b/gcc-4.8/gcc/config/rs6000/predicates.md @@ -124,6 +124,11 @@ (and (match_code "const_int") (match_test "INTVAL (op) >= -16 && INTVAL (op) <= 15"))) +;; Return 1 if op is a unsigned 3-bit constant integer. +(define_predicate "u3bit_cint_operand" + (and (match_code "const_int") + (match_test "INTVAL (op) >= 0 && INTVAL (op) <= 7"))) + ;; Return 1 if op is a unsigned 5-bit constant integer. (define_predicate "u5bit_cint_operand" (and (match_code "const_int") @@ -135,6 +140,11 @@ (and (match_code "const_int") (match_test "INTVAL (op) >= -128 && INTVAL (op) <= 127"))) +;; Return 1 if op is a unsigned 10-bit constant integer. +(define_predicate "u10bit_cint_operand" + (and (match_code "const_int") + (match_test "INTVAL (op) >= 0 && INTVAL (op) <= 1023"))) + ;; Return 1 if op is a constant integer that can fit in a D field. (define_predicate "short_cint_operand" (and (match_code "const_int") @@ -161,11 +171,21 @@ (and (match_code "const_int") (match_test "IN_RANGE (INTVAL (op), 0, 1)"))) +;; Match op = 0..3. +(define_predicate "const_0_to_3_operand" + (and (match_code "const_int") + (match_test "IN_RANGE (INTVAL (op), 0, 3)"))) + ;; Match op = 2 or op = 3. (define_predicate "const_2_to_3_operand" (and (match_code "const_int") (match_test "IN_RANGE (INTVAL (op), 2, 3)"))) +;; Match op = 0..15 +(define_predicate "const_0_to_15_operand" + (and (match_code "const_int") + (match_test "IN_RANGE (INTVAL (op), 0, 15)"))) + ;; Return 1 if op is a register that is not special. (define_predicate "gpc_reg_operand" (match_operand 0 "register_operand") @@ -182,9 +202,95 @@ if (REGNO (op) >= ARG_POINTER_REGNUM && !CA_REGNO_P (REGNO (op))) return 1; + if (TARGET_VSX && VSX_REGNO_P (REGNO (op))) + return 1; + return INT_REGNO_P (REGNO (op)) || FP_REGNO_P (REGNO (op)); }) +;; Return 1 if op is a general purpose register. Unlike gpc_reg_operand, don't +;; allow floating point or vector registers. +(define_predicate "int_reg_operand" + (match_operand 0 "register_operand") +{ + if ((TARGET_E500_DOUBLE || TARGET_SPE) && invalid_e500_subreg (op, mode)) + return 0; + + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + + if (!REG_P (op)) + return 0; + + if (REGNO (op) >= FIRST_PSEUDO_REGISTER) + return 1; + + return INT_REGNO_P (REGNO (op)); +}) + +;; Like int_reg_operand, but only return true for base registers +(define_predicate "base_reg_operand" + (match_operand 0 "int_reg_operand") +{ + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + + if (!REG_P (op)) + return 0; + + return (REGNO (op) != FIRST_GPR_REGNO); +}) + +;; Return 1 if op is a HTM specific SPR register. +(define_predicate "htm_spr_reg_operand" + (match_operand 0 "register_operand") +{ + if (!TARGET_HTM) + return 0; + + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + + if (!REG_P (op)) + return 0; + + switch (REGNO (op)) + { + case TFHAR_REGNO: + case TFIAR_REGNO: + case TEXASR_REGNO: + return 1; + default: + break; + } + + /* Unknown SPR. */ + return 0; +}) + +;; Return 1 if op is a general purpose register that is an even register +;; which suitable for a load/store quad operation +(define_predicate "quad_int_reg_operand" + (match_operand 0 "register_operand") +{ + HOST_WIDE_INT r; + + if (!TARGET_QUAD_MEMORY && !TARGET_QUAD_MEMORY_ATOMIC) + return 0; + + if (GET_CODE (op) == SUBREG) + op = SUBREG_REG (op); + + if (!REG_P (op)) + return 0; + + r = REGNO (op); + if (r >= FIRST_PSEUDO_REGISTER) + return 1; + + return (INT_REGNO_P (r) && ((r & 1) == 0)); +}) + ;; Return 1 if op is a register that is a condition register field. (define_predicate "cc_reg_operand" (match_operand 0 "register_operand") @@ -315,6 +421,11 @@ && CONST_DOUBLE_HIGH (op) == 0") (match_operand 0 "gpc_reg_operand")))) +;; Like reg_or_logical_cint_operand, but allow vsx registers +(define_predicate "vsx_reg_or_cint_operand" + (ior (match_operand 0 "vsx_register_operand") + (match_operand 0 "reg_or_logical_cint_operand"))) + ;; Return 1 if operand is a CONST_DOUBLE that can be set in a register ;; with no more than one instruction per word. (define_predicate "easy_fp_constant" @@ -333,6 +444,11 @@ && mode != DImode) return 1; + /* The constant 0.0 is easy under VSX. */ + if ((mode == SFmode || mode == DFmode || mode == SDmode || mode == DDmode) + && VECTOR_UNIT_VSX_P (DFmode) && op == CONST0_RTX (mode)) + return 1; + if (DECIMAL_FLOAT_MODE_P (mode)) return 0; @@ -521,6 +637,55 @@ (and (match_operand 0 "memory_operand") (match_test "offsettable_nonstrict_memref_p (op)"))) +;; Return 1 if the operand is suitable for load/store quad memory. +;; This predicate only checks for non-atomic loads/stores (not lqarx/stqcx). +(define_predicate "quad_memory_operand" + (match_code "mem") +{ + rtx addr, op0, op1; + int ret; + + if (!TARGET_QUAD_MEMORY && !TARGET_SYNC_TI) + ret = 0; + + else if (!memory_operand (op, mode)) + ret = 0; + + else if (GET_MODE_SIZE (GET_MODE (op)) != 16) + ret = 0; + + else if (MEM_ALIGN (op) < 128) + ret = 0; + + else + { + addr = XEXP (op, 0); + if (int_reg_operand (addr, Pmode)) + ret = 1; + + else if (GET_CODE (addr) != PLUS) + ret = 0; + + else + { + op0 = XEXP (addr, 0); + op1 = XEXP (addr, 1); + ret = (int_reg_operand (op0, Pmode) + && GET_CODE (op1) == CONST_INT + && IN_RANGE (INTVAL (op1), -32768, 32767) + && (INTVAL (op1) & 15) == 0); + } + } + + if (TARGET_DEBUG_ADDR) + { + fprintf (stderr, "\nquad_memory_operand, ret = %s\n", ret ? "true" : "false"); + debug_rtx (op); + } + + return ret; +}) + ;; Return 1 if the operand is an indexed or indirect memory operand. (define_predicate "indexed_or_indirect_operand" (match_code "mem") @@ -535,6 +700,19 @@ return indexed_or_indirect_address (op, mode); }) +;; Like indexed_or_indirect_operand, but also allow a GPR register if direct +;; moves are supported. +(define_predicate "reg_or_indexed_operand" + (match_code "mem,reg") +{ + if (MEM_P (op)) + return indexed_or_indirect_operand (op, mode); + else if (TARGET_DIRECT_MOVE) + return register_operand (op, mode); + return + 0; +}) + ;; Return 1 if the operand is an indexed or indirect memory operand with an ;; AND -16 in it, used to recognize when we need to switch to Altivec loads ;; to realign loops instead of VSX (altivec silently ignores the bottom bits, @@ -560,6 +738,28 @@ && REG_P (XEXP (op, 1)))") (match_operand 0 "address_operand"))) +;; Return 1 if the operand is an index-form address. +(define_special_predicate "indexed_address" + (match_test "(GET_CODE (op) == PLUS + && REG_P (XEXP (op, 0)) + && REG_P (XEXP (op, 1)))")) + +;; Return 1 if the operand is a MEM with an update-form address. This may +;; also include update-indexed form. +(define_special_predicate "update_address_mem" + (match_test "(MEM_P (op) + && (GET_CODE (XEXP (op, 0)) == PRE_INC + || GET_CODE (XEXP (op, 0)) == PRE_DEC + || GET_CODE (XEXP (op, 0)) == PRE_MODIFY))")) + +;; Return 1 if the operand is a MEM with an update-indexed-form address. Note +;; that PRE_INC/PRE_DEC will always be non-indexed (i.e. non X-form) since the +;; increment is based on the mode size and will therefor always be a const. +(define_special_predicate "update_indexed_address_mem" + (match_test "(MEM_P (op) + && GET_CODE (XEXP (op, 0)) == PRE_MODIFY + && indexed_address (XEXP (XEXP (op, 0), 1), mode))")) + ;; Used for the destination of the fix_truncdfsi2 expander. ;; If stfiwx will be used, the result goes to memory; otherwise, ;; we're going to emit a store and a load of a subreg, so the dest is a @@ -883,7 +1083,8 @@ (and (match_code "symbol_ref") (match_test "(DEFAULT_ABI != ABI_AIX || SYMBOL_REF_FUNCTION_P (op)) && ((SYMBOL_REF_LOCAL_P (op) - && (DEFAULT_ABI != ABI_AIX + && ((DEFAULT_ABI != ABI_AIX + && DEFAULT_ABI != ABI_ELFv2) || !SYMBOL_REF_EXTERNAL_P (op))) || (op == XEXP (DECL_RTL (current_function_decl), 0)))"))) @@ -1364,6 +1565,26 @@ return 1; }) +;; Return 1 if OP is valid for crsave insn, known to be a PARALLEL. +(define_predicate "crsave_operation" + (match_code "parallel") +{ + int count = XVECLEN (op, 0); + int i; + + for (i = 1; i < count; i++) + { + rtx exp = XVECEXP (op, 0, i); + + if (GET_CODE (exp) != USE + || GET_CODE (XEXP (exp, 0)) != REG + || GET_MODE (XEXP (exp, 0)) != CCmode + || ! CR_REGNO_P (REGNO (XEXP (exp, 0)))) + return 0; + } + return 1; +}) + ;; Return 1 if OP is valid for lmw insn, known to be a PARALLEL. (define_predicate "lmw_operation" (match_code "parallel") @@ -1534,3 +1755,99 @@ return GET_CODE (op) == UNSPEC && XINT (op, 1) == UNSPEC_TOCREL; }) + +;; Match the first insn (addis) in fusing the combination of addis and loads to +;; GPR registers on power8. +(define_predicate "fusion_gpr_addis" + (match_code "const_int,high,plus") +{ + HOST_WIDE_INT value; + rtx int_const; + + if (GET_CODE (op) == HIGH) + return 1; + + if (CONST_INT_P (op)) + int_const = op; + + else if (GET_CODE (op) == PLUS + && base_reg_operand (XEXP (op, 0), Pmode) + && CONST_INT_P (XEXP (op, 1))) + int_const = XEXP (op, 1); + + else + return 0; + + /* Power8 currently will only do the fusion if the top 11 bits of the addis + value are all 1's or 0's. */ + value = INTVAL (int_const); + if ((value & (HOST_WIDE_INT)0xffff) != 0) + return 0; + + if ((value & (HOST_WIDE_INT)0xffff0000) == 0) + return 0; + + return (IN_RANGE (value >> 16, -32, 31)); +}) + +;; Match the second insn (lbz, lhz, lwz, ld) in fusing the combination of addis +;; and loads to GPR registers on power8. +(define_predicate "fusion_gpr_mem_load" + (match_code "mem,sign_extend,zero_extend") +{ + rtx addr; + + /* Handle sign/zero extend. */ + if (GET_CODE (op) == ZERO_EXTEND + || (TARGET_P8_FUSION_SIGN && GET_CODE (op) == SIGN_EXTEND)) + { + op = XEXP (op, 0); + mode = GET_MODE (op); + } + + if (!MEM_P (op)) + return 0; + + switch (mode) + { + case QImode: + case HImode: + case SImode: + break; + + case DImode: + if (!TARGET_POWERPC64) + return 0; + break; + + default: + return 0; + } + + addr = XEXP (op, 0); + if (GET_CODE (addr) == PLUS) + { + rtx base = XEXP (addr, 0); + rtx offset = XEXP (addr, 1); + + return (base_reg_operand (base, GET_MODE (base)) + && satisfies_constraint_I (offset)); + } + + else if (GET_CODE (addr) == LO_SUM) + { + rtx base = XEXP (addr, 0); + rtx offset = XEXP (addr, 1); + + if (!base_reg_operand (base, GET_MODE (base))) + return 0; + + else if (TARGET_XCOFF || (TARGET_ELF && TARGET_POWERPC64)) + return small_toc_ref (offset, GET_MODE (offset)); + + else if (TARGET_ELF && !TARGET_POWERPC64) + return CONSTANT_P (offset); + } + + return 0; +}) |