LLVM 17.0.0git
PPCMCAsmInfo.cpp
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1//===-- PPCMCAsmInfo.cpp - PPC asm properties -----------------------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains the declarations of the MCAsmInfoDarwin properties.
10//
11//===----------------------------------------------------------------------===//
12
13#include "PPCMCAsmInfo.h"
15#include <cassert>
16
17using namespace llvm;
18
19void PPCELFMCAsmInfo::anchor() { }
20
22 // FIXME: This is not always needed. For example, it is not needed in the
23 // v2 abi.
24 NeedsLocalForSize = true;
25
26 if (is64Bit) {
28 }
30 T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle;
31
32 // ".comm align is in bytes but .align is pow-2."
33 AlignmentIsInBytes = false;
34
35 CommentString = "#";
36
37 // Uses '.section' before '.bss' directive
39
40 // Debug Information
42
43 DollarIsPC = true;
44
45 // Set up DWARF directives
47
48 // Exceptions handling
50
51 ZeroDirective = "\t.space\t";
52 Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
53 AssemblerDialect = 1; // New-Style mnemonics.
55}
56
57void PPCXCOFFMCAsmInfo::anchor() {}
58
60 if (T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle)
61 report_fatal_error("XCOFF is not supported for little-endian targets");
62 CodePointerSize = CalleeSaveStackSlotSize = Is64Bit ? 8 : 4;
63
64 // A size of 8 is only supported by the assembler under 64-bit.
65 Data64bitsDirective = Is64Bit ? "\t.vbyte\t8, " : nullptr;
66
67 // Debug Information
69
70 // Set up DWARF directives
72
73 // Support $ as PC in inline asm
74 DollarIsPC = true;
75}
static bool is64Bit(const char *name)
unsigned MinInstAlignment
Every possible instruction length is a multiple of this value.
Definition: MCAsmInfo.h:115
const char * Data64bitsDirective
Definition: MCAsmInfo.h:288
bool DollarIsPC
The '$' token, when not referencing an identifier or constant, refers to the current PC.
Definition: MCAsmInfo.h:119
bool NeedsLocalForSize
Definition: MCAsmInfo.h:163
ExceptionHandling ExceptionsType
Exception handling format for the target. Defaults to None.
Definition: MCAsmInfo.h:454
LCOMM::LCOMMType LCOMMDirectiveAlignmentType
Describes if the .lcomm directive for the target supports an alignment argument and how it is interpr...
Definition: MCAsmInfo.h:369
bool UsesELFSectionDirectiveForBSS
This is true if this target uses ELF '.section' directive before the '.bss' one.
Definition: MCAsmInfo.h:319
bool SupportsDebugInformation
True if target supports emission of debugging information.
Definition: MCAsmInfo.h:451
unsigned AssemblerDialect
Which dialect of an assembler variant to use. Defaults to 0.
Definition: MCAsmInfo.h:193
bool AlignmentIsInBytes
If this is true (the default) then the asmprinter emits ".align N" directives, where N is the number ...
Definition: MCAsmInfo.h:329
const char * ZeroDirective
This should be set to the directive used to get some number of zero (and non-zero if supported by the...
Definition: MCAsmInfo.h:249
bool IsLittleEndian
True if target is little endian. Default is true.
Definition: MCAsmInfo.h:79
unsigned CodePointerSize
Code pointer size in bytes. Default is 4.
Definition: MCAsmInfo.h:72
unsigned CalleeSaveStackSlotSize
Size of the stack slot reserved for callee-saved registers, in bytes.
Definition: MCAsmInfo.h:76
StringRef CommentString
This indicates the comment string used by the assembler.
Definition: MCAsmInfo.h:135
PPCELFMCAsmInfo(bool is64Bit, const Triple &)
PPCXCOFFMCAsmInfo(bool is64Bit, const Triple &)
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
@ ByteAlignment
Definition: MCAsmInfo.h:50
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
@ DwarfCFI
DWARF-like instruction based exceptions.
void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:145