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Construct and emit DW_TAG_inlined_subroutine DIEs for inlined subroutine scopes (only in FastISel mode).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69116 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-04-15 00:10:26 +00:00
parent aaa1fdb271
commit 1be3eccecb
4 changed files with 233 additions and 98 deletions
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42
lib/CodeGen/SelectionDAG/FastISel.cpp
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@@ -47,6 +47,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/DebugLoc.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Target/TargetData.h"
@@ -354,10 +355,18 @@ bool FastISel::SelectCall(User *I) {
case Intrinsic::dbg_region_end: {
DbgRegionEndInst *REI = cast<DbgRegionEndInst>(I);
if (DW && DW->ValidDebugInfo(REI->getContext(), true)) {
unsigned ID =
DW->RecordRegionEnd(cast<GlobalVariable>(REI->getContext()));
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
BuildMI(MBB, DL, II).addImm(ID);
unsigned ID = 0;
DISubprogram Subprogram(cast<GlobalVariable>(REI->getContext()));
if (!Subprogram.describes(MF.getFunction())) {
// This is end of an inlined function.
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
ID = DW->RecordInlinedFnEnd(Subprogram);
BuildMI(MBB, DL, II).addImm(ID);
} else {
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
ID = DW->RecordRegionEnd(cast<GlobalVariable>(REI->getContext()));
BuildMI(MBB, DL, II).addImm(ID);
}
}
return true;
}
@@ -369,6 +378,7 @@ bool FastISel::SelectCall(User *I) {
if (DW->ValidDebugInfo(SP, true)) {
// llvm.dbg.func.start implicitly defines a dbg_stoppoint which is what
// (most?) gdb expects.
DebugLoc PrevLoc = DL;
DISubprogram Subprogram(cast<GlobalVariable>(SP));
DICompileUnit CompileUnit = Subprogram.getCompileUnit();
std::string Dir, FN;
@@ -379,17 +389,15 @@ bool FastISel::SelectCall(User *I) {
unsigned Line = Subprogram.getLineNumber();
unsigned LabelID = DW->RecordSourceLine(Line, 0, SrcFile);
setCurDebugLoc(DebugLoc::get(MF.getOrCreateDebugLocID(SrcFile, Line, 0)));
std::string SPName;
Subprogram.getLinkageName(SPName);
if (!SPName.empty()
&& strcmp(SPName.c_str(), MF.getFunction()->getNameStart())) {
// This is a beginning of inlined function.
DW->RecordRegionStart(cast<GlobalVariable>(FSI->getSubprogram()),
LabelID);
if (!Subprogram.describes(MF.getFunction())) {
// This is a beginning of an inlined function.
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DBG_LABEL);
BuildMI(MBB, DL, II).addImm(LabelID);
DW->RecordInlineInfo(Subprogram.getGV(), LabelID);
DebugLocTuple PrevLocTpl = MF.getDebugLocTuple(PrevLoc);
DW->RecordInlinedFnStart(FSI, Subprogram, LabelID,
PrevLocTpl.Src,
PrevLocTpl.Line,
PrevLocTpl.Col);
} else {
// llvm.dbg.func_start also defines beginning of function scope.
DW->RecordRegionStart(cast<GlobalVariable>(FSI->getSubprogram()));
@@ -419,7 +427,13 @@ bool FastISel::SelectCall(User *I) {
// Build the DECLARE instruction.
const TargetInstrDesc &II = TII.get(TargetInstrInfo::DECLARE);
BuildMI(MBB, DL, II).addFrameIndex(FI).addGlobalAddress(GV);
MachineInstr *DeclareMI
= BuildMI(MBB, DL, II).addFrameIndex(FI).addGlobalAddress(GV);
DIVariable DV(cast<GlobalVariable>(GV));
if (!DV.isNull()) {
// This is a local variable
DW->RecordVariableScope(DV, DeclareMI);
}
}
return true;
}