Lower the MBlaze target specific calling conventions for "interrupt_handler"
and "save_volatiles" correctly. This completes the custom calling convention
functionality changes for the MBlaze backend that were started in 121888.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121891 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp
index ad7222a..dc7cff8 100644
--- a/lib/Target/MBlaze/MBlazeISelLowering.cpp
+++ b/lib/Target/MBlaze/MBlazeISelLowering.cpp
@@ -864,13 +864,18 @@
Flag = Chain.getValue(1);
}
- // Return on MBlaze is always a "rtsd R15, 8"
+ // If this function is using the interrupt_handler calling convention
+ // then use "rtid r14, 0" otherwise use "rtsd r15, 8"
+ unsigned Ret = (CallConv == llvm::CallingConv::MBLAZE_INTR) ? MBlazeISD::IRet
+ : MBlazeISD::Ret;
+ unsigned Reg = (CallConv == llvm::CallingConv::MBLAZE_INTR) ? MBlaze::R14
+ : MBlaze::R15;
+ SDValue DReg = DAG.getRegister(Reg, MVT::i32);
+
if (Flag.getNode())
- return DAG.getNode(MBlazeISD::Ret, dl, MVT::Other,
- Chain, DAG.getRegister(MBlaze::R15, MVT::i32), Flag);
- else // Return Void
- return DAG.getNode(MBlazeISD::Ret, dl, MVT::Other,
- Chain, DAG.getRegister(MBlaze::R15, MVT::i32));
+ return DAG.getNode(Ret, dl, MVT::Other, Chain, DReg, Flag);
+
+ return DAG.getNode(Ret, dl, MVT::Other, Chain, DReg);
}
//===----------------------------------------------------------------------===//