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Generic cleanup.

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llvm-svn: 141050
This commit is contained in:
Bill Wendling 2011-10-04 00:16:40 +00:00
parent f9b98a3c3e
commit a660966f4d
1 changed files with 16 additions and 23 deletions
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39
lib/CodeGen/SjLjEHPrepare.cpp
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@ -638,7 +638,7 @@ bool SjLjEHPass::insertSjLjEHSupport(Function &F) {
Type::getInt8PtrTy(F.getContext()), "",
EntryBB->getTerminator());
Value *DispatchVal = CallInst::Create(BuiltinSetjmpFn, SetjmpArg,
"dispatch",
"",
EntryBB->getTerminator());
// Add a call to dispatch_setup after the setjmp call. This is expanded to any
@ -780,9 +780,8 @@ setupFunctionContext(Function &F, ArrayRef<LandingPadInst*> LPads) {
// LSDA address
Idxs[1] = ConstantInt::get(Int32Ty, 4);
Value *LSDAFieldPtr =
GetElementPtrInst::Create(FuncCtx, Idxs, "lsda_gep",
EntryBB->getTerminator());
Value *LSDAFieldPtr = GetElementPtrInst::Create(FuncCtx, Idxs, "lsda_gep",
EntryBB->getTerminator());
Value *LSDA = CallInst::Create(LSDAAddrFn, "lsda_addr",
EntryBB->getTerminator());
new StoreInst(LSDA, LSDAFieldPtr, true, EntryBB->getTerminator());
@ -819,15 +818,13 @@ bool SjLjEHPass::setupEntryBlockAndCallSites(Function &F) {
// Get a reference to the jump buffer.
Idxs[1] = ConstantInt::get(Int32Ty, 5);
Value *JBufPtr =
GetElementPtrInst::Create(FuncCtx, Idxs, "jbuf_gep",
EntryBB->getTerminator());
Value *JBufPtr = GetElementPtrInst::Create(FuncCtx, Idxs, "jbuf_gep",
EntryBB->getTerminator());
// Save the frame pointer.
Idxs[1] = ConstantInt::get(Int32Ty, 0);
Value *FramePtr =
GetElementPtrInst::Create(JBufPtr, Idxs, "jbuf_fp_gep",
EntryBB->getTerminator());
Value *FramePtr = GetElementPtrInst::Create(JBufPtr, Idxs, "jbuf_fp_gep",
EntryBB->getTerminator());
Value *Val = CallInst::Create(FrameAddrFn,
ConstantInt::get(Int32Ty, 0),
@ -837,26 +834,23 @@ bool SjLjEHPass::setupEntryBlockAndCallSites(Function &F) {
// Save the stack pointer.
Idxs[1] = ConstantInt::get(Int32Ty, 2);
Value *StackPtr =
GetElementPtrInst::Create(JBufPtr, Idxs, "jbuf_sp_gep",
EntryBB->getTerminator());
Value *StackPtr = GetElementPtrInst::Create(JBufPtr, Idxs, "jbuf_sp_gep",
EntryBB->getTerminator());
Val = CallInst::Create(StackAddrFn, "sp", EntryBB->getTerminator());
new StoreInst(Val, StackPtr, true, EntryBB->getTerminator());
// Call the setjmp instrinsic. It fills in the rest of the jmpbuf.
Value *SetjmpArg =
CastInst::Create(Instruction::BitCast, JBufPtr,
Type::getInt8PtrTy(F.getContext()), "",
EntryBB->getTerminator());
Value *SetjmpArg = CastInst::Create(Instruction::BitCast, JBufPtr,
Type::getInt8PtrTy(F.getContext()), "",
EntryBB->getTerminator());
CallInst::Create(BuiltinSetjmpFn, SetjmpArg, "", EntryBB->getTerminator());
// Store a pointer to the function context so that the back-end will know
// where to look for it.
Value *FuncCtxArg =
CastInst::Create(Instruction::BitCast, FuncCtx,
Type::getInt8PtrTy(F.getContext()), "",
EntryBB->getTerminator());
Value *FuncCtxArg = CastInst::Create(Instruction::BitCast, FuncCtx,
Type::getInt8PtrTy(F.getContext()), "",
EntryBB->getTerminator());
CallInst::Create(FuncCtxFn, FuncCtxArg, "", EntryBB->getTerminator());
// At this point, we are all set up, update the invoke instructions to mark
@ -877,7 +871,7 @@ bool SjLjEHPass::setupEntryBlockAndCallSites(Function &F) {
// created for this function and any unexpected exceptions thrown will go
// directly to the caller's context, which is what we want anyway, so no need
// to do anything here.
for (Function::iterator BB = F.begin(), E = F.end(); ++BB != E;) {
for (Function::iterator BB = F.begin(), E = F.end(); ++BB != E;)
for (BasicBlock::iterator I = BB->begin(), end = BB->end(); I != end; ++I)
if (CallInst *CI = dyn_cast<CallInst>(I)) {
if (!CI->doesNotThrow())
@ -885,7 +879,6 @@ bool SjLjEHPass::setupEntryBlockAndCallSites(Function &F) {
} else if (ResumeInst *RI = dyn_cast<ResumeInst>(I)) {
insertCallSiteStore(RI, -1, CallSite);
}
}
// Register the function context and make sure it's known to not throw
CallInst *Register = CallInst::Create(RegisterFn, FuncCtx, "",