Remove some code that doesn't appear to do anything. All the ARM call

instructions already have implicit defs of LR.  The comment suggests that
this is intended to fix something like pr6111, but it doesn't really do
that either.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108186 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index e60a2b14f1faa586d7479b1c1ecfc4912cc51005..2d4426eb0676f235ddc0388475741cb670b73e93 100644 (file)
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -1284,11 +1284,6 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
       ? (isLocalARMFunc ? ARMISD::CALL_PRED : ARMISD::CALL)
       : ARMISD::CALL_NOLINK;
   }
-  if (CallOpc == ARMISD::CALL_NOLINK && !Subtarget->isThumb1Only()) {
-    // implicit def LR - LR mustn't be allocated as GRP:$dst of CALL_NOLINK
-    Chain = DAG.getCopyToReg(Chain, dl, ARM::LR, DAG.getUNDEF(MVT::i32),InFlag);
-    InFlag = Chain.getValue(1);
-  }
 
   std::vector<SDValue> Ops;
   Ops.push_back(Chain);