++AI) {
Type *Ty = AI->getType();
- // Aggregate types can't be cast, but are legal argument types, so we have
- // to handle them differently. We use an extract/insert pair as a
- // lightweight method to achieve the same goal.
if (isa<StructType>(Ty) || isa<ArrayType>(Ty)) {
- Instruction *EI = ExtractValueInst::Create(AI, 0, "", AfterAllocaInsPt);
- Instruction *NI = InsertValueInst::Create(AI, EI, 0);
- NI->insertAfter(EI);
- AI->replaceAllUsesWith(NI);
-
- // Set the operand of the instructions back to the AllocaInst.
- EI->setOperand(0, AI);
- NI->setOperand(0, AI);
+ // Aggregate types can't be cast, but are legal argument types,
+ // so we have to handle them differently. We use
+ // select i8 true, %arg, undef to achieve the same goal
+ Value *TrueValue = ConstantInt::getTrue(F.getContext());
+ Value *UndefValue = UndefValue::get(Ty);
+ Instruction *SI = SelectInst::Create(TrueValue, AI, UndefValue,
+ AI->getName() + ".tmp",
+ AfterAllocaInsPt);
+ AI->replaceAllUsesWith(SI);
+
+ SI->setOperand(1, AI);
} else {
// This is always a no-op cast because we're casting AI to AI->getType()
// so src and destination types are identical. BitCast is the only
--- /dev/null
+; RUN: llc -mtriple=armv7-apple-ios -O0 < %s | FileCheck %s
+; RUN: llc -mtriple=armv7-apple-ios -O1 < %s | FileCheck %s
+; RUN: llc -mtriple=armv7-apple-ios -O2 < %s | FileCheck %s
+; RUN: llc -mtriple=armv7-apple-ios -O3 < %s | FileCheck %s
+
+; SjLjEHPrepare shouldn't crash when lowering empty structs.
+;
+; Checks that between in case of empty structs used as arguments
+; nothing happens, i.e. there are no instructions between
+; __Unwind_SjLj_Register and actual @bar invocation
+
+
+define i8* @foo({} %c) {
+entry:
+; CHECK: bl __Unwind_SjLj_Register
+; CHECK-NEXT: {{[A-Z][a-zA-Z0-9]*}}:
+; CHECK-NEXT: bl _bar
+ invoke void @bar ()
+ to label %unreachable unwind label %handler
+
+unreachable:
+ unreachable
+
+handler:
+ %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @baz to i8*)
+ cleanup
+ resume { i8*, i32 } undef
+}
+
+declare void @bar()
+declare i32 @baz(...)