Changes in directory llvm/lib/CodeGen:
MachineModuleInfo.cpp updated: 1.3 -> 1.4
---
Log message:
Add structures used for collecting eh information.
---
Diffs of the changes: (+94 -0)
MachineModuleInfo.cpp | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 94 insertions(+)
Index: llvm/lib/CodeGen/MachineModuleInfo.cpp
diff -u llvm/lib/CodeGen/MachineModuleInfo.cpp:1.3
llvm/lib/CodeGen/MachineModuleInfo.cpp:1.4
--- llvm/lib/CodeGen/MachineModuleInfo.cpp:1.3 Thu Feb 1 10:31:34 2007
+++ llvm/lib/CodeGen/MachineModuleInfo.cpp Wed Feb 21 16:38:31 2007
@@ -1472,6 +1472,7 @@
, ScopeMap()
, RootScope(NULL)
, FrameMoves()
+, LandingPads()
{}
MachineModuleInfo::~MachineModuleInfo() {
@@ -1510,6 +1511,10 @@
// Clean up frame info.
FrameMoves.clear();
+
+ // Clean up exception info.
+ LandingPads.clear();
+ TypeInfos.clear();
}
/// getDescFor - Convert a Value to a debug information descriptor.
@@ -1640,6 +1645,95 @@
return Slot;
}
+//===-EH-------------------------------------------------------------------===//
+
+/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
+/// specified MachineBasicBlock.
+LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
+ (MachineBasicBlock *LandingPad) {
+ unsigned N = LandingPads.size();
+ for (unsigned i = 0; i < N; ++i) {
+ LandingPadInfo &UI = LandingPads[i];
+ if (UI.LandingPadBlock == LandingPad)
+ return UI;
+ }
+
+ LandingPads.push_back(LandingPadInfo(LandingPad));
+ return LandingPads[N];
+}
+
+/// addInvoke - Provide the begin and end labels of an invoke style call and
+/// associate it with a try landing pad block.
+void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
+ unsigned BeginLabel, unsigned EndLabel) {
+ LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
+ if (!UI.BeginLabel) UI.BeginLabel = BeginLabel;
+ UI.EndLabel = EndLabel;
+}
+
+/// addLandingPad - Provide the label of a try LandingPad block.
+///
+unsigned MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
+ unsigned LandingPadLabel = NextLabelID();
+ LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
+ UI.LandingPadLabel = LandingPadLabel;
+ return LandingPadLabel;
+}
+
+/// addPersonality - Provide the personality function for the exception
+/// information.
+void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
+ Function *Personality) {
+ LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
+ UI.Personality = Personality;
+}
+
+/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
+///
+void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
+ std::vector<GlobalVariable *> &TyInfo)
{
+ LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
+ for (unsigned N = TyInfo.size(); N; --N)
+ UI.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
+}
+
+/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
+/// pads.
+void MachineModuleInfo::TidyLandingPads() {
+ for (unsigned i = 0; i != LandingPads.size(); ) {
+ LandingPadInfo &LandingPad = LandingPads[i];
+ LandingPad.BeginLabel = MappedLabel(LandingPad.BeginLabel);
+ LandingPad.EndLabel = MappedLabel(LandingPad.EndLabel);
+ LandingPad.LandingPadLabel = MappedLabel(LandingPad.LandingPadLabel);
+
+ if (!LandingPad.BeginLabel ||
+ !LandingPad.EndLabel ||
+ !LandingPad.LandingPadLabel) {
+ LandingPads.erase(LandingPads.begin() + i);
+ continue;
+ }
+
+ ++i;
+ }
+}
+
+/// getTypeIDFor - Return the type id for the specified typeinfo. This is
+/// function wide.
+unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
+ for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
+ if (TypeInfos[i] == TI) return i + 1;
+
+ TypeInfos.push_back(TI);
+ return TypeInfos.size();
+}
+
+/// getLandingPadInfos - Return a reference to the landing pad info for the
+/// current function.
+Function *MachineModuleInfo::getPersonality() const {
+ return !LandingPads.empty() ? LandingPads[0].Personality : NULL;
+}
+
+
//===----------------------------------------------------------------------===//
/// DebugLabelFolding pass - This pass prunes out redundant labels. This
allows
/// a info consumer to determine if the range of two labels is empty, by seeing
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