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Factor out EH landing pad code into a separate function, and constify

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a bunch of stuff to support it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101273 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-04-14 19:53:31 +00:00
parent 7f6b8b8891
commit 2520864773
10 changed files with 70 additions and 60 deletions
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lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+7 -6
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@@ -305,10 +305,10 @@ GlobalVariable *llvm::ExtractTypeInfo(Value *V) {
/// AddCatchInfo - Extract the personality and type infos from an eh.selector
/// call, and add them to the specified machine basic block.
void llvm::AddCatchInfo(CallInst &I, MachineModuleInfo *MMI,
void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,
MachineBasicBlock *MBB) {
// Inform the MachineModuleInfo of the personality for this landing pad.
ConstantExpr *CE = cast<ConstantExpr>(I.getOperand(2));
const ConstantExpr *CE = cast<ConstantExpr>(I.getOperand(2));
assert(CE->getOpcode() == Instruction::BitCast &&
isa<Function>(CE->getOperand(0)) &&
"Personality should be a function");
@@ -320,7 +320,7 @@ void llvm::AddCatchInfo(CallInst &I, MachineModuleInfo *MMI,
unsigned N = I.getNumOperands();
for (unsigned i = N - 1; i > 2; --i) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(i))) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(i))) {
unsigned FilterLength = CI->getZExtValue();
unsigned FirstCatch = i + FilterLength + !FilterLength;
assert (FirstCatch <= N && "Invalid filter length");
@@ -357,10 +357,11 @@ void llvm::AddCatchInfo(CallInst &I, MachineModuleInfo *MMI,
}
}
void llvm::CopyCatchInfo(BasicBlock *SrcBB, BasicBlock *DestBB,
void llvm::CopyCatchInfo(const BasicBlock *SrcBB, const BasicBlock *DestBB,
MachineModuleInfo *MMI, FunctionLoweringInfo &FLI) {
for (BasicBlock::iterator I = SrcBB->begin(), E = --SrcBB->end(); I != E; ++I)
if (EHSelectorInst *EHSel = dyn_cast<EHSelectorInst>(I)) {
for (BasicBlock::const_iterator I = SrcBB->begin(), E = --SrcBB->end();
I != E; ++I)
if (const EHSelectorInst *EHSel = dyn_cast<EHSelectorInst>(I)) {
// Apply the catch info to DestBB.
AddCatchInfo(*EHSel, MMI, FLI.MBBMap[DestBB]);
#ifndef NDEBUG