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; Options for the IA-32 and AMD64 ports of the compiler.

; Copyright (C) 2005, 2007 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 3, 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 COPYING3.  If not see

; .

m128bit-long-double

Target RejectNegative Report Mask(128BIT_LONG_DOUBLE)

sizeof(long double) is 16

m32

Target RejectNegative Negative(m64) Report InverseMask(64BIT)

Generate 32bit i386 code

m386

Target RejectNegative Undocumented

;; Deprecated

m3dnow

Target Report Mask(3DNOW)

Support 3DNow! built-in functions

m486

Target RejectNegative Undocumented

;; Deprecated

m64

Target RejectNegative Negative(m32) Report Mask(64BIT)

Generate 64bit x86-64 code

m80387

Target Report Mask(80387)

Use hardware fp

m96bit-long-double

Target RejectNegative Report InverseMask(128BIT_LONG_DOUBLE)

sizeof(long double) is 12

maccumulate-outgoing-args

Target Report Mask(ACCUMULATE_OUTGOING_ARGS)

Reserve space for outgoing arguments in the function prologue

malign-double

Target Report Mask(ALIGN_DOUBLE)

Align some doubles on dword boundary

malign-functions=

Target RejectNegative Joined Var(ix86_align_funcs_string)

Function starts are aligned to this power of 2

malign-jumps=

Target RejectNegative Joined Var(ix86_align_jumps_string)

Jump targets are aligned to this power of 2

malign-loops=

Target RejectNegative Joined Var(ix86_align_loops_string)

Loop code aligned to this power of 2

malign-stringops

Target RejectNegative Report InverseMask(NO_ALIGN_STRINGOPS, ALIGN_STRINGOPS)

Align destination of the string operations

march=

Target RejectNegative Joined Var(ix86_arch_string)

Generate code for given CPU

masm=

Target RejectNegative Joined Var(ix86_asm_string)

Use given assembler dialect

mbranch-cost=

Target RejectNegative Joined Var(ix86_branch_cost_string)

Branches are this expensive (1-5, arbitrary units)

mlarge-data-threshold=

Target RejectNegative Joined Var(ix86_section_threshold_string)

Data greater than given threshold will go into .ldata section in x86-64 medium model

mcmodel=

Target RejectNegative Joined Var(ix86_cmodel_string)

Use given x86-64 code model

mdebug-addr

Target RejectNegative Var(TARGET_DEBUG_ADDR) Undocumented

mdebug-arg

Target RejectNegative Var(TARGET_DEBUG_ARG) Undocumented

mfancy-math-387

Target RejectNegative Report InverseMask(NO_FANCY_MATH_387, USE_FANCY_MATH_387)

Generate sin, cos, sqrt for FPU

mfp-ret-in-387

Target Report Mask(FLOAT_RETURNS)

Return values of functions in FPU registers

mfpmath=

Target RejectNegative Joined Var(ix86_fpmath_string)

Generate floating point mathematics using given instruction set

mhard-float

Target RejectNegative Mask(80387) MaskExists

Use hardware fp

mieee-fp

Target Report Mask(IEEE_FP)

Use IEEE math for fp comparisons

minline-all-stringops

Target Report Mask(INLINE_ALL_STRINGOPS)

Inline all known string operations

mintel-syntax

Target Undocumented

;; Deprecated

mmmx

Target Report Mask(MMX)

Support MMX built-in functions

mms-bitfields

Target Report Mask(MS_BITFIELD_LAYOUT)

Use native (MS) bitfield layout

mno-align-stringops

Target RejectNegative Report Mask(NO_ALIGN_STRINGOPS) Undocumented

mno-fancy-math-387

Target RejectNegative Report Mask(NO_FANCY_MATH_387) Undocumented

mno-push-args

Target RejectNegative Report Mask(NO_PUSH_ARGS) Undocumented

mno-red-zone

Target RejectNegative Report Mask(NO_RED_ZONE) Undocumented

momit-leaf-frame-pointer

Target Report Mask(OMIT_LEAF_FRAME_POINTER)

Omit the frame pointer in leaf functions

mpentium

Target RejectNegative Undocumented

;; Deprecated

mpentiumpro

Target RejectNegative Undocumented

;; Deprecated

mpreferred-stack-boundary=

Target RejectNegative Joined Var(ix86_preferred_stack_boundary_string)

Attempt to keep stack aligned to this power of 2

mpush-args

Target Report InverseMask(NO_PUSH_ARGS, PUSH_ARGS)

Use push instructions to save outgoing arguments

mred-zone

Target RejectNegative Report InverseMask(NO_RED_ZONE, RED_ZONE)

Use red-zone in the x86-64 code

mregparm=

Target RejectNegative Joined Var(ix86_regparm_string)

Number of registers used to pass integer arguments

mrtd

Target Report Mask(RTD)

Alternate calling convention

msoft-float

Target InverseMask(80387)

Do not use hardware fp

msse

Target Report Mask(SSE)

Support MMX and SSE built-in functions and code generation

msse2

Target Report Mask(SSE2)

Support MMX, SSE and SSE2 built-in functions and code generation

msse3

Target Report Mask(SSE3)

Support MMX, SSE, SSE2 and SSE3 built-in functions and code generation

msseregparm

Target RejectNegative Mask(SSEREGPARM)

Use SSE register passing conventions for SF and DF mode

mstackrealign

Target Report Var(ix86_force_align_arg_pointer)

Realign stack in prologue

msvr3-shlib

Target Report Mask(SVR3_SHLIB)

Uninitialized locals in .bss

mstack-arg-probe

Target Report Mask(STACK_PROBE)

Enable stack probing

mtls-dialect=

Target RejectNegative Joined Var(ix86_tls_dialect_string)

Use given thread-local storage dialect

mtls-direct-seg-refs

Target Report Mask(TLS_DIRECT_SEG_REFS)

Use direct references against %gs when accessing tls data

mtune=

Target RejectNegative Joined Var(ix86_tune_string)

Schedule code for given CPU

;; Support Athlon 3Dnow builtins

Mask(3DNOW_A)