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CodeGen-Windows: Only emit _fltused if a VarArg function is called with floating point args.

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This should be the minimum set of functions that could possibly need it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2010-10-21 00:08:21 +00:00
parent 2d8f6fe610
commit dd0a00a6e3
4 changed files with 14 additions and 15 deletions
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lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+5 -5
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@@ -5030,16 +5030,16 @@ void SelectionDAGBuilder::visitCall(const CallInst &I) {
// See if any floating point values are being passed to this external
// function. This is used to emit an undefined reference to fltused on
// Windows.
if (!F->hasLocalLinkage() && F->hasName()) {
MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI();
for (unsigned i = 0, e = I.getNumArgOperands(); i != e &&
!MMI.callsExternalFunctionWithFloatingPointArguments(); ++i) {
MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI();
if (F->isVarArg() &&
!MMI.callsExternalVAFunctionWithFloatingPointArguments()) {
for (unsigned i = 0, e = I.getNumArgOperands(); i != e; ++i) {
const Type* T = I.getArgOperand(i)->getType();
for (po_iterator<const Type*> i = po_begin(T),
e = po_end(T);
i != e; ++i) {
if (i->isFloatingPointTy()) {
MMI.setCallsExternalFunctionWithFloatingPointArguments(true);
MMI.setCallsExternalVAFunctionWithFloatingPointArguments(true);
break;
}
}