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ret i32 1, i8 2
another step towards multiple return value support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47407 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2008-02-20 22:39:45 +00:00
parent 93f9d57bcd
commit 5af2f63479
1 changed files with 37 additions and 3 deletions
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40
lib/AsmParser/llvmAsmParser.y
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@ -1024,6 +1024,7 @@ Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
// ValueRef - Unresolved reference to a definition or BB
%type <ValIDVal> ValueRef ConstValueRef SymbolicValueRef
%type <ValueVal> ResolvedVal // <type> <valref> pair
%type <ValueList> ReturnedVal
// Tokens and types for handling constant integer values
//
// ESINT64VAL - A negative number within long long range
@ -1459,7 +1460,7 @@ ResultTypes
: Types {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$1)->getDescription());
if (!(*$1)->isFirstClassType())
if (!(*$1)->isFirstClassType() && (*$1)->getTypeID() != Type::StructTyID)
GEN_ERROR("LLVM functions cannot return aggregate types");
$$ = $1;
}
@ -2523,6 +2524,16 @@ ResolvedVal : Types ValueRef {
}
;
ReturnedVal : ResolvedVal {
$$ = new std::vector<Value *>();
$$->push_back($1);
CHECK_FOR_ERROR
}
| ReturnedVal ',' ConstVal {
($$=$1)->push_back($3);
CHECK_FOR_ERROR
};
BasicBlockList : BasicBlockList BasicBlock {
$$ = $1;
CHECK_FOR_ERROR
@ -2565,8 +2576,31 @@ InstructionList : InstructionList Inst {
};
BBTerminatorInst : RET ResolvedVal { // Return with a result...
$$ = new ReturnInst($2);
BBTerminatorInst :
RET ReturnedVal { // Return with a result...
if($2->size() == 1)
$$ = new ReturnInst($2->back());
else {
std::vector<const Type*> Elements;
std::vector<Constant*> Vals;
for (std::vector<Value *>::iterator I = $2->begin(),
E = $2->end(); I != E; ++I) {
Value *V = *I;
Constant *C = cast<Constant>(V);
Elements.push_back(V->getType());
Vals.push_back(C);
}
const StructType *STy = StructType::get(Elements);
PATypeHolder *PTy =
new PATypeHolder(HandleUpRefs(StructType::get(Elements)));
Constant *CS = ConstantStruct::get(STy, Vals); // *$2);
$$ = new ReturnInst(CS);
delete PTy;
}
delete $2;
CHECK_FOR_ERROR
}
| RET VOID { // Return with no result...