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-;; Constraint definitions for IA-32 and x86-64.
-;; Copyright (C) 2006 Free Software Foundation, Inc.
-;;
-;; This file is part of GCC.
-;;
-;; GCC is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
-;;
-;; GCC is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-;;
-;; You should have received a copy of the GNU General Public License
-;; along with GCC; see the file COPYING. If not, write to
-;; the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
-
-;;; Unused letters:
-;;; B H TU W
-;;; h jk vw z
-
-;; Integer register constraints.
-;; It is not necessary to define 'r' here.
-(define_register_constraint "R" "LEGACY_REGS"
- "Legacy register---the eight integer registers available on all
- i386 processors (@code{a}, @code{b}, @code{c}, @code{d},
- @code{si}, @code{di}, @code{bp}, @code{sp}).")
-
-(define_register_constraint "q" "TARGET_64BIT ? GENERAL_REGS : Q_REGS"
- "Any register accessible as @code{@var{r}l}. In 32-bit mode, @code{a},
- @code{b}, @code{c}, and @code{d}; in 64-bit mode, any integer register.")
-
-(define_register_constraint "Q" "Q_REGS"
- "Any register accessible as @code{@var{r}h}: @code{a}, @code{b},
- @code{c}, and @code{d}.")
-
-(define_register_constraint "l" "INDEX_REGS"
- "@internal Any register that can be used as the index in a base+index
- memory access: that is, any general register except the stack pointer.")
-
-(define_register_constraint "a" "AREG"
- "The @code{a} register.")
-
-(define_register_constraint "b" "BREG"
- "The @code{b} register.")
-
-(define_register_constraint "c" "CREG"
- "The @code{c} register.")
-
-(define_register_constraint "d" "DREG"
- "The @code{d} register.")
-
-(define_register_constraint "S" "SIREG"
- "The @code{si} register.")
-
-(define_register_constraint "D" "DIREG"
- "The @code{di} register.")
-
-(define_register_constraint "A" "AD_REGS"
- "The @code{a} and @code{d} registers, as a pair (for instructions
- that return half the result in one and half in the other).")
-
-;; Floating-point register constraints.
-(define_register_constraint "f"
- "TARGET_80387 || TARGET_FLOAT_RETURNS_IN_80387 ? FLOAT_REGS : NO_REGS"
- "Any 80387 floating-point (stack) register.")
-
-(define_register_constraint "t"
- "TARGET_80387 || TARGET_FLOAT_RETURNS_IN_80387 ? FP_TOP_REG : NO_REGS"
- "Top of 80387 floating-point stack (@code{%st(0)}).")
-
-(define_register_constraint "u"
- "TARGET_80387 || TARGET_FLOAT_RETURNS_IN_80387 ? FP_SECOND_REG : NO_REGS"
- "Second from top of 80387 floating-point stack (@code{%st(1)}).")
-
-;; Vector registers (also used for plain floating point nowadays).
-(define_register_constraint "y" "TARGET_MMX ? MMX_REGS : NO_REGS"
- "Any MMX register.")
-
-(define_register_constraint "x" "TARGET_SSE ? SSE_REGS : NO_REGS"
- "Any SSE register.")
-
-;; APPLE LOCAL begin 5612787 mainline sse4
-;; We use the Y prefix to denote any number of conditional register sets:
-;; 0 First SSE register.
-;; t SSE2 enabled
-;; i SSE2 inter-unit moves enabled
-;; m MMX inter-unit moves enabled
-
-(define_register_constraint "Y0" "TARGET_SSE ? SSE_FIRST_REG : NO_REGS"
- "First SSE register (@code{%xmm0}).")
-
-(define_register_constraint "Yt" "TARGET_SSE2 ? SSE_REGS : NO_REGS"
- "@internal Any SSE register, when SSE2 is enabled.")
-
-(define_register_constraint "Yi"
- "TARGET_SSE2 && TARGET_INTER_UNIT_MOVES ? SSE_REGS : NO_REGS"
- "@internal Any SSE register, when SSE2 and inter-unit moves are enabled.")
-
-(define_register_constraint "Ym"
- "TARGET_MMX && TARGET_INTER_UNIT_MOVES ? MMX_REGS : NO_REGS"
- "@internal Any MMX register, when inter-unit moves are enabled.")
-;; APPLE LOCAL end 5612787 mainline sse4
-
-;; Integer constant constraints.
-(define_constraint "I"
- "Integer constant in the range 0 @dots{} 31, for 32-bit shifts."
- (and (match_code "const_int")
- (match_test "ival >= 0 && ival <= 31")))
-
-(define_constraint "J"
- "Integer constant in the range 0 @dots{} 63, for 64-bit shifts."
- (and (match_code "const_int")
- (match_test "ival >= 0 && ival <= 63")))
-
-(define_constraint "K"
- "Signed 8-bit integer constant."
- (and (match_code "const_int")
- (match_test "ival >= -128 && ival <= 127")))
-
-(define_constraint "L"
- "@code{0xFF} or @code{0xFFFF}, for andsi as a zero-extending move."
- (and (match_code "const_int")
- (match_test "ival == 0xFF || ival == 0xFFFF")))
-
-(define_constraint "M"
- "0, 1, 2, or 3 (shifts for the @code{lea} instruction)."
- (and (match_code "const_int")
- (match_test "ival >= 0 && ival <= 3")))
-
-(define_constraint "N"
- "Unsigned 8-bit integer constant (for @code{in} and @code{out}
- instructions)."
- (and (match_code "const_int")
- (match_test "ival >= 0 && ival <= 255")))
-
-(define_constraint "O"
- "@internal Integer constant in the range 0 @dots{} 127, for 128-bit shifts."
- (and (match_code "const_int")
- (match_test "ival >= 0 && ival <= 127")))
-
-;; Floating-point constant constraints.
-;; We allow constants even if TARGET_80387 isn't set, because the
-;; stack register converter may need to load 0.0 into the function
-;; value register (top of stack).
-(define_constraint "G"
- "Standard 80387 floating point constant."
- (and (match_code "const_double")
- (match_test "standard_80387_constant_p (op)")))
-
-;; This can theoretically be any mode's CONST0_RTX.
-(define_constraint "C"
- "Standard SSE floating point constant."
- (match_test "standard_sse_constant_p (op)"))
-
-;; Constant-or-symbol-reference constraints.
-
-(define_constraint "e"
- "32-bit signed integer constant, or a symbolic reference known
- to fit that range (for immediate operands in sign-extending x86-64
- instructions)."
- (match_operand 0 "x86_64_immediate_operand"))
-
-(define_constraint "Z"
- "32-bit unsigned integer constant, or a symbolic reference known
- to fit that range (for immediate operands in zero-extending x86-64
- instructions)."
- (match_operand 0 "x86_64_zext_immediate_operand"))
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