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Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp')
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp114
1 files changed, 44 insertions, 70 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 2f1b0e5..dcc5fe4 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -1,5 +1,5 @@
#include "DwarfCompileUnit.h"
-
+#include "DwarfExpression.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/GlobalValue.h"
@@ -10,8 +10,8 @@
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
namespace llvm {
@@ -103,7 +103,7 @@ DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(DIGlobalVariable GV) {
assert(GV.isGlobalVariable());
- DIScope GVContext = DD->resolve(GV.getContext());
+ DIScope GVContext = GV.getContext();
DIType GTy = DD->resolve(GV.getType());
// Construct the context before querying for the existence of the DIE in
@@ -122,7 +122,7 @@ DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(DIGlobalVariable GV) {
DIE *VariableSpecDIE = getOrCreateStaticMemberDIE(SDMDecl);
addDIEEntry(*VariableDIE, dwarf::DW_AT_specification, *VariableSpecDIE);
} else {
- DeclContext = resolve(GV.getContext());
+ DeclContext = GV.getContext();
// Add name and type.
addString(*VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
addType(*VariableDIE, GTy);
@@ -292,10 +292,10 @@ DIE &DwarfCompileUnit::updateSubprogramScopeDIE(DISubprogram SP) {
// Only include DW_AT_frame_base in full debug info
if (!includeMinimalInlineScopes()) {
- const TargetRegisterInfo *RI =
- Asm->TM.getSubtargetImpl()->getRegisterInfo();
+ const TargetRegisterInfo *RI = Asm->MF->getSubtarget().getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
- addAddress(*SPDie, dwarf::DW_AT_frame_base, Location);
+ if (RI->isPhysicalRegister(Location.getReg()))
+ addAddress(*SPDie, dwarf::DW_AT_frame_base, Location);
}
// Add name to the name table, we do this here because we're guaranteed
@@ -515,15 +515,23 @@ DwarfCompileUnit::constructVariableDIEImpl(const DbgVariable &DV,
}
// .. else use frame index.
- int FI = DV.getFrameIndex();
- if (FI != ~0) {
+ if (DV.getFrameIndex().back() == ~0)
+ return VariableDie;
+
+ auto Expr = DV.getExpression().begin();
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc();
+ DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
+ for (auto FI : DV.getFrameIndex()) {
unsigned FrameReg = 0;
- const TargetFrameLowering *TFI =
- Asm->TM.getSubtargetImpl()->getFrameLowering();
+ const TargetFrameLowering *TFI = Asm->MF->getSubtarget().getFrameLowering();
int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
- MachineLocation Location(FrameReg, Offset);
- addVariableAddress(DV, *VariableDie, Location);
+ assert(Expr != DV.getExpression().end() &&
+ "Wrong number of expressions");
+ DwarfExpr.AddMachineRegIndirect(FrameReg, Offset);
+ DwarfExpr.AddExpression(Expr->begin(), Expr->end());
+ ++Expr;
}
+ addBlock(*VariableDie, dwarf::DW_AT_location, Loc);
return VariableDie;
}
@@ -694,7 +702,7 @@ void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
for (unsigned vi = 0, ve = Variables.getNumElements(); vi != ve; ++vi) {
DIVariable DV(Variables.getElement(vi));
assert(DV.isVariable());
- DbgVariable NewVar(DV, DIExpression(nullptr), DD);
+ DbgVariable NewVar(DV, DIExpression(), DD);
auto VariableDie = constructVariableDIE(NewVar);
applyVariableAttributes(NewVar, *VariableDie);
SPDIE->addChild(std::move(VariableDie));
@@ -736,24 +744,22 @@ void DwarfCompileUnit::addVariableAddress(const DbgVariable &DV, DIE &Die,
else if (DV.isBlockByrefVariable())
addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
else
- addAddress(Die, dwarf::DW_AT_location, Location,
- DV.getVariable().isIndirect());
+ addAddress(Die, dwarf::DW_AT_location, Location);
}
/// Add an address attribute to a die based on the location provided.
void DwarfCompileUnit::addAddress(DIE &Die, dwarf::Attribute Attribute,
- const MachineLocation &Location,
- bool Indirect) {
+ const MachineLocation &Location) {
DIELoc *Loc = new (DIEValueAllocator) DIELoc();
- if (Location.isReg() && !Indirect)
- addRegisterOpPiece(*Loc, Location.getReg());
- else {
- addRegisterOffset(*Loc, Location.getReg(), Location.getOffset());
- if (Indirect && !Location.isReg()) {
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
- }
- }
+ bool validReg;
+ if (Location.isReg())
+ validReg = addRegisterOpPiece(*Loc, Location.getReg());
+ else
+ validReg = addRegisterOffset(*Loc, Location.getReg(), Location.getOffset());
+
+ if (!validReg)
+ return;
// Now attach the location information to the DIE.
addBlock(Die, Attribute, Loc);
@@ -767,53 +773,21 @@ void DwarfCompileUnit::addComplexAddress(const DbgVariable &DV, DIE &Die,
dwarf::Attribute Attribute,
const MachineLocation &Location) {
DIELoc *Loc = new (DIEValueAllocator) DIELoc();
- unsigned N = DV.getNumAddrElements();
- unsigned i = 0;
- if (Location.isReg()) {
- if (N >= 2 && DV.getAddrElement(0) == dwarf::DW_OP_plus) {
- assert(!DV.getVariable().isIndirect() &&
- "double indirection not handled");
- // If first address element is OpPlus then emit
- // DW_OP_breg + Offset instead of DW_OP_reg + Offset.
- addRegisterOffset(*Loc, Location.getReg(), DV.getAddrElement(1));
- i = 2;
- } else if (N >= 2 && DV.getAddrElement(0) == dwarf::DW_OP_deref) {
- assert(!DV.getVariable().isIndirect() &&
- "double indirection not handled");
- addRegisterOpPiece(*Loc, Location.getReg(),
- DV.getExpression().getPieceSize(),
- DV.getExpression().getPieceOffset());
- i = 3;
- } else
- addRegisterOpPiece(*Loc, Location.getReg());
+ DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
+ assert(DV.getExpression().size() == 1);
+ DIExpression Expr = DV.getExpression().back();
+ bool ValidReg;
+ if (Location.getOffset()) {
+ ValidReg = DwarfExpr.AddMachineRegIndirect(Location.getReg(),
+ Location.getOffset());
+ if (ValidReg)
+ DwarfExpr.AddExpression(Expr.begin(), Expr.end());
} else
- addRegisterOffset(*Loc, Location.getReg(), Location.getOffset());
-
- for (; i < N; ++i) {
- uint64_t Element = DV.getAddrElement(i);
- if (Element == dwarf::DW_OP_plus) {
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
- addUInt(*Loc, dwarf::DW_FORM_udata, DV.getAddrElement(++i));
-
- } else if (Element == dwarf::DW_OP_deref) {
- if (!Location.isReg())
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
-
- } else if (Element == dwarf::DW_OP_piece) {
- const unsigned SizeOfByte = 8;
- unsigned PieceOffsetInBits = DV.getAddrElement(++i) * SizeOfByte;
- unsigned PieceSizeInBits = DV.getAddrElement(++i) * SizeOfByte;
- // Emit DW_OP_bit_piece Size Offset.
- assert(PieceSizeInBits > 0 && "piece has zero size");
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_bit_piece);
- addUInt(*Loc, dwarf::DW_FORM_udata, PieceSizeInBits);
- addUInt(*Loc, dwarf::DW_FORM_udata, PieceOffsetInBits);
- } else
- llvm_unreachable("unknown DIBuilder Opcode");
- }
+ ValidReg = DwarfExpr.AddMachineRegExpression(Expr, Location.getReg());
// Now attach the location information to the DIE.
- addBlock(Die, Attribute, Loc);
+ if (ValidReg)
+ addBlock(Die, Attribute, Loc);
}
/// Add a Dwarf loclistptr attribute data and value.
generated by cgit v1.1 at 2024-12-22 11:34:33 +0000