8981298535
This cleans up @l @ha optimization in PPCAsmParser and is also the first step toward removing VK_PPC_* from the generic MCSymbolRefExpr::VariantKind. Basically we ensure that @l @ha family modifiers always lead to PPCMCExpr and avoid MCSymbolRefExpr::VariantKind. This allows us to delete a lot of switch statements that involve a long list of VK_PPC_LO/VK_PPC_HI/...
160 lines
6.2 KiB
C++
160 lines
6.2 KiB
C++
//===-- PPCMCAsmInfo.cpp - PPC asm properties -----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declarations of the MCAsmInfoDarwin properties.
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//
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//===----------------------------------------------------------------------===//
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#include "PPCMCAsmInfo.h"
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#include "PPCMCExpr.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/TargetParser/Triple.h"
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using namespace llvm;
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void PPCELFMCAsmInfo::anchor() { }
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const MCAsmInfo::VariantKindDesc variantKindDescs[] = {
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{MCSymbolRefExpr::VK_DTPREL, "DTPREL"},
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{MCSymbolRefExpr::VK_GOT, "GOT"},
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{MCSymbolRefExpr::VK_PCREL, "PCREL"},
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{MCSymbolRefExpr::VK_PLT, "PLT"},
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{MCSymbolRefExpr::VK_TLSGD, "tlsgd"},
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{MCSymbolRefExpr::VK_TLSLD, "tlsld"},
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{MCSymbolRefExpr::VK_TPREL, "TPREL"},
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{PPCMCExpr::VK_PPC_LO, "l"},
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{PPCMCExpr::VK_PPC_HI, "h"},
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{PPCMCExpr::VK_PPC_HA, "ha"},
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{PPCMCExpr::VK_PPC_HIGH, "high"},
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{PPCMCExpr::VK_PPC_HIGHA, "higha"},
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{PPCMCExpr::VK_PPC_HIGHER, "higher"},
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{PPCMCExpr::VK_PPC_HIGHERA, "highera"},
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{PPCMCExpr::VK_PPC_HIGHEST, "highest"},
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{PPCMCExpr::VK_PPC_HIGHESTA, "highesta"},
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{MCSymbolRefExpr::VK_PPC_GOT_LO, "got@l"},
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{MCSymbolRefExpr::VK_PPC_GOT_HI, "got@h"},
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{MCSymbolRefExpr::VK_PPC_GOT_HA, "got@ha"},
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{MCSymbolRefExpr::VK_PPC_TOCBASE, "tocbase"},
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{MCSymbolRefExpr::VK_PPC_TOC, "toc"},
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{MCSymbolRefExpr::VK_PPC_TOC_LO, "toc@l"},
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{MCSymbolRefExpr::VK_PPC_TOC_HI, "toc@h"},
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{MCSymbolRefExpr::VK_PPC_TOC_HA, "toc@ha"},
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{MCSymbolRefExpr::VK_PPC_U, "u"},
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{MCSymbolRefExpr::VK_PPC_L, "l"}, // FIXME: share the name with VK_PPC_LO
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{MCSymbolRefExpr::VK_PPC_DTPMOD, "dtpmod"},
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{MCSymbolRefExpr::VK_PPC_TPREL_LO, "tprel@l"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HI, "tprel@h"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HA, "tprel@ha"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGH, "tprel@high"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGHA, "tprel@higha"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGHER, "tprel@higher"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGHERA, "tprel@highera"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGHEST, "tprel@highest"},
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{MCSymbolRefExpr::VK_PPC_TPREL_HIGHESTA, "tprel@highesta"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_LO, "dtprel@l"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HI, "dtprel@h"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HA, "dtprel@ha"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGH, "dtprel@high"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGHA, "dtprel@higha"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGHER, "dtprel@higher"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGHERA, "dtprel@highera"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGHEST, "dtprel@highest"},
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{MCSymbolRefExpr::VK_PPC_DTPREL_HIGHESTA, "dtprel@highesta"},
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{MCSymbolRefExpr::VK_PPC_GOT_TPREL, "got@tprel"},
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{MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO, "got@tprel@l"},
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{MCSymbolRefExpr::VK_PPC_GOT_TPREL_HI, "got@tprel@h"},
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{MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA, "got@tprel@ha"},
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{MCSymbolRefExpr::VK_PPC_GOT_DTPREL, "got@dtprel"},
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{MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO, "got@dtprel@l"},
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{MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HI, "got@dtprel@h"},
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{MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HA, "got@dtprel@ha"},
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{MCSymbolRefExpr::VK_PPC_TLS, "tls"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSGD, "got@tlsgd"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO, "got@tlsgd@l"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HI, "got@tlsgd@h"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA, "got@tlsgd@ha"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSGD, "gd"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSGDM, "m"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSIE, "ie"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSLE, "le"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSLD, "ld"},
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{MCSymbolRefExpr::VK_PPC_AIX_TLSML, "ml"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSLD, "got@tlsld"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO, "got@tlsld@l"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HI, "got@tlsld@h"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA, "got@tlsld@ha"},
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{MCSymbolRefExpr::VK_PPC_GOT_PCREL, "got@pcrel"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSGD_PCREL, "got@tlsgd@pcrel"},
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{MCSymbolRefExpr::VK_PPC_GOT_TLSLD_PCREL, "got@tlsld@pcrel"},
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{MCSymbolRefExpr::VK_PPC_GOT_TPREL_PCREL, "got@tprel@pcrel"},
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{MCSymbolRefExpr::VK_PPC_TLS_PCREL, "tls@pcrel"},
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{MCSymbolRefExpr::VK_PPC_LOCAL, "local"},
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{MCSymbolRefExpr::VK_PPC_NOTOC, "notoc"},
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{MCSymbolRefExpr::VK_PPC_PCREL_OPT, "<<invalid>>"},
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};
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PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
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// FIXME: This is not always needed. For example, it is not needed in the
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// v2 abi.
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NeedsLocalForSize = true;
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if (is64Bit) {
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CodePointerSize = CalleeSaveStackSlotSize = 8;
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}
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IsLittleEndian =
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T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle;
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// ".comm align is in bytes but .align is pow-2."
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AlignmentIsInBytes = false;
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CommentString = "#";
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// Uses '.section' before '.bss' directive
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UsesELFSectionDirectiveForBSS = true;
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// Debug Information
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SupportsDebugInformation = true;
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DollarIsPC = true;
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// Set up DWARF directives
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MinInstAlignment = 4;
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// Exceptions handling
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ExceptionsType = ExceptionHandling::DwarfCFI;
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ZeroDirective = "\t.space\t";
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Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
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AssemblerDialect = 1; // New-Style mnemonics.
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LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
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initializeVariantKinds(variantKindDescs);
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}
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void PPCXCOFFMCAsmInfo::anchor() {}
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PPCXCOFFMCAsmInfo::PPCXCOFFMCAsmInfo(bool Is64Bit, const Triple &T) {
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if (T.getArch() == Triple::ppc64le || T.getArch() == Triple::ppcle)
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report_fatal_error("XCOFF is not supported for little-endian targets");
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CodePointerSize = CalleeSaveStackSlotSize = Is64Bit ? 8 : 4;
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// A size of 8 is only supported by the assembler under 64-bit.
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Data64bitsDirective = Is64Bit ? "\t.vbyte\t8, " : nullptr;
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// Debug Information
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SupportsDebugInformation = true;
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// Set up DWARF directives
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MinInstAlignment = 4;
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// Support $ as PC in inline asm
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DollarIsPC = true;
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initializeVariantKinds(variantKindDescs);
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}
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