Reapply r112623. Included additional check for unused byval argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112659 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 77a2c86..5ef6404 100644
--- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -221,6 +221,7 @@
#endif
LiveOutRegInfo.clear();
ArgDbgValues.clear();
+ ByValArgFrameIndexMap.clear();
RegFixups.clear();
}
@@ -254,6 +255,28 @@
return FirstReg;
}
+/// setByValArgumentFrameIndex - Record frame index for the byval
+/// argument. This overrides previous frame index entry for this argument,
+/// if any.
+void FunctionLoweringInfo::setByValArgumentFrameIndex(const Argument *A,
+ int FI) {
+ assert (A->hasByValAttr() && "Argument does not have byval attribute!");
+ ByValArgFrameIndexMap[A] = FI;
+}
+
+/// getByValArgumentFrameIndex - Get frame index for the byval argument.
+/// If the argument does not have any assigned frame index then 0 is
+/// returned.
+int FunctionLoweringInfo::getByValArgumentFrameIndex(const Argument *A) {
+ assert (A->hasByValAttr() && "Argument does not have byval attribute!");
+ DenseMap<const Argument *, int>::iterator I =
+ ByValArgFrameIndexMap.find(A);
+ if (I != ByValArgFrameIndexMap.end())
+ return I->second;
+ DEBUG(dbgs() << "Argument does not have assigned frame index!");
+ return 0;
+}
+
/// AddCatchInfo - Extract the personality and type infos from an eh.selector
/// call, and add them to the specified machine basic block.
void llvm::AddCatchInfo(const CallInst &I, MachineModuleInfo *MMI,