LLVM 19.0.0git
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1//===- MCAsmInfoCOFF.cpp - COFF asm properties ----------------------------===//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
9// This file defines target asm properties related what form asm statements
10// should take in general on COFF-based targets
17using namespace llvm;
19void MCAsmInfoCOFF::anchor() {}
22 // MingW 4.5 and later support .comm with log2 alignment, but .lcomm uses byte
23 // alignment.
28 WeakRefDirective = "\t.weak\t";
29 AvoidWeakIfComdat = true;
31 // Doesn't support visibility:
35 // Set up DWARF directives
39 // At least MSVC inline-asm does AShr.
40 UseLogicalShr = false;
42 // If this is a COFF target, assume that it supports associative comdats. It's
43 // part of the spec.
46 // We can generate constants in comdat sections that can be shared,
47 // but in order not to create null typed symbols, we actually need to
48 // make them global symbols as well.
52void MCAsmInfoMicrosoft::anchor() {}
56void MCAsmInfoGNUCOFF::anchor() {}
59 // If this is a GNU environment (mingw or cygwin), don't use associative
60 // comdats for jump tables, unwind information, and other data associated with
61 // a function.
64 // We don't create constants in comdat sections for MinGW.
bool NeedsDwarfSectionOffsetDirective
Definition: MCAsmInfo.h:324
MCSymbolAttr ProtectedVisibilityAttr
This attribute, if not MCSA_Invalid, is used to declare a symbol as having protected visibility.
Definition: MCAsmInfo.h:446
bool AvoidWeakIfComdat
True if we should mark symbols as global instead of weak, for weak*‍/linkonce*, if the symbol has a c...
Definition: MCAsmInfo.h:430
bool UseLogicalShr
True if the integrated assembler should interpret 'a >> b' constant expressions as logical rather tha...
Definition: MCAsmInfo.h:529
LCOMM::LCOMMType LCOMMDirectiveAlignmentType
Describes if the .lcomm directive for the target supports an alignment argument and how it is interpr...
Definition: MCAsmInfo.h:372
bool HasCOFFComdatConstants
True if this is a non-GNU COFF target.
Definition: MCAsmInfo.h:103
const char * WeakRefDirective
This directive, if non-null, is used to declare a global as being a weak undefined symbol.
Definition: MCAsmInfo.h:417
bool HasDotTypeDotSizeDirective
True if the target has .type and .size directives, this is true for most ELF targets.
Definition: MCAsmInfo.h:390
bool HasCOFFAssociativeComdats
True if this is a non-GNU COFF target.
Definition: MCAsmInfo.h:99
bool SupportsDebugInformation
True if target supports emission of debugging information.
Definition: MCAsmInfo.h:454
MCSymbolAttr HiddenDeclarationVisibilityAttr
This attribute, if not MCSA_Invalid, is used to declare an undefined symbol as having hidden visibili...
Definition: MCAsmInfo.h:442
bool HasSingleParameterDotFile
True if the target has a single parameter .file directive, this is true for ELF targets.
Definition: MCAsmInfo.h:394
bool COMMDirectiveAlignmentIsInBytes
True is .comm's and .lcomms optional alignment is to be specified in bytes instead of log2(n).
Definition: MCAsmInfo.h:368
MCSymbolAttr HiddenVisibilityAttr
This attribute, if not MCSA_Invalid, is used to declare a symbol as having hidden visibility.
Definition: MCAsmInfo.h:434
@ ByteAlignment
Definition: MCAsmInfo.h:50
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
@ MCSA_Invalid
Not a valid directive.
Definition: MCDirectives.h:19