forked from OSchip/llvm-project
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
//===- MCFixup.cpp - Assembly Fixup Implementation ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCFixup.h"
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using namespace llvm;
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static MCSymbolRefExpr::VariantKind getAccessVariant(const MCExpr *Expr) {
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switch (Expr->getKind()) {
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case MCExpr::Unary: {
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assert(getAccessVariant(cast<MCUnaryExpr>(Expr)->getSubExpr()) ==
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MCSymbolRefExpr::VK_None);
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return MCSymbolRefExpr::VK_None;
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}
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case MCExpr::Target:
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llvm_unreachable("unsupported");
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case MCExpr::Constant:
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return MCSymbolRefExpr::VK_None;
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case MCExpr::SymbolRef: {
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const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(Expr);
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return SRE->getKind();
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}
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case MCExpr::Binary: {
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const MCBinaryExpr *ABE = cast<MCBinaryExpr>(Expr);
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assert(getAccessVariant(ABE->getRHS()) == MCSymbolRefExpr::VK_None);
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return getAccessVariant(ABE->getLHS());
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}
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}
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llvm_unreachable("unknown MCExpr kind");
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}
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MCSymbolRefExpr::VariantKind MCFixup::getAccessVariant() const {
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return ::getAccessVariant(getValue());
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}
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