1 files changed, 15 insertions, 5 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 48f093cc5ee..5dee7b12a21 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -3511,9 +3511,14 @@ SDValue PPCTargetLowering::LowerFormalArguments_32SVR4(
       // Argument stored in memory.
       assert(VA.isMemLoc());
 
+      // Get the extended size of the argument type in stack
       unsigned ArgSize = VA.getLocVT().getStoreSize();
-      int FI = MFI.CreateFixedObject(ArgSize, VA.getLocMemOffset(),
-                                     isImmutable);
+      // Get the actual size of the argument type
+      unsigned ObjSize = VA.getValVT().getStoreSize();
+      unsigned ArgOffset = VA.getLocMemOffset();
+      // Stack objects in PPC32 are right justified.
+      ArgOffset += ArgSize - ObjSize;
+      int FI = MFI.CreateFixedObject(ArgSize, ArgOffset, isImmutable);
 
       // Create load nodes to retrieve arguments from the stack.
       SDValue FIN = DAG.getFrameIndex(FI, PtrVT);
@@ -5468,10 +5473,15 @@ SDValue PPCTargetLowering::LowerCall_32SVR4(
       Arg = PtrOff;
     }
 
-    if (VA.isRegLoc()) {
-      if (Arg.getValueType() == MVT::i1)
-        Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i32, Arg);
+    // When useCRBits() is true, there can be i1 arguments.
+    // It is because getRegisterType(MVT::i1) => MVT::i1,
+    // and for other integer types getRegisterType() => MVT::i32.
+    // Extend i1 and ensure callee will get i32.
+    if (Arg.getValueType() == MVT::i1)
+      Arg = DAG.getNode(Flags.isSExt() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
+                        dl, MVT::i32, Arg);
 
+    if (VA.isRegLoc()) {
       seenFloatArg |= VA.getLocVT().isFloatingPoint();
       // Put argument in a physical register.
       RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));