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Second installment of "BasicBlock operands to the back"

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changes.

For InvokeInst now all arguments begin at op_begin().
The Callee, Cont and Fail are now faster to get by
access relative to op_end().

This patch introduces some temporary uglyness in CallSite.
Next I'll bring CallInst up to a similar scheme and then
the uglyness will magically vanish.

This patch also exposes all the reliance of the libraries
on InvokeInst's operand ordering. I am thinking of taking
care of that too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66920 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif
2009-03-13 18:27:29 +00:00
parent 6dc3a8fd40
commit b14cda3c0d
12 changed files with 61 additions and 35 deletions
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17
lib/VMCore/Instructions.cpp
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@@ -93,6 +93,13 @@ bool CallSite::hasArgument(const Value *Arg) const {
return false;
}
User::op_iterator CallSite::getCallee() const {
Instruction *II(getInstruction());
return isCall()
? cast<CallInst>(II)->op_begin()
: cast<InvokeInst>(II)->op_end() - 3; // Skip BB, BB, Function
}
#undef CALLSITE_DELEGATE_GETTER
#undef CALLSITE_DELEGATE_SETTER
@@ -431,10 +438,9 @@ bool CallInst::paramHasAttr(unsigned i, Attributes attr) const {
void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
Value* const *Args, unsigned NumArgs) {
assert(NumOperands == 3+NumArgs && "NumOperands not set up?");
Use *OL = OperandList;
OL[0] = Fn;
OL[1] = IfNormal;
OL[2] = IfException;
Op<-3>() = Fn;
Op<-2>() = IfNormal;
Op<-1>() = IfException;
const FunctionType *FTy =
cast<FunctionType>(cast<PointerType>(Fn->getType())->getElementType());
FTy = FTy; // silence warning.
@@ -443,12 +449,13 @@ void InvokeInst::init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
(FTy->isVarArg() && NumArgs > FTy->getNumParams())) &&
"Calling a function with bad signature");
Use *OL = OperandList;
for (unsigned i = 0, e = NumArgs; i != e; i++) {
assert((i >= FTy->getNumParams() ||
FTy->getParamType(i) == Args[i]->getType()) &&
"Invoking a function with a bad signature!");
OL[i+3] = Args[i];
OL[i] = Args[i];
}
}