From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 22 Oct 2010 21:29:58 +0000 (+0000)
Subject: Transfer implicit ops when forming load multiple and return instructions.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b179b46cc558c720d23a066c768bad71f975eb93;p=oota-llvm.git

Transfer implicit ops when forming load multiple and return instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117151 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index f843196105d..fc84f8c9531 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -416,6 +416,10 @@ public:
   ///
   bool allDefsAreDead() const;
 
+  /// copyImplicitOps - Copy implicit register operands from specified
+  /// instruction to this instruction.
+  void copyImplicitOps(const MachineInstr *MI);
+
   //
   // Debugging support
   //
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 2f73551aa6d..3b7b4d218d2 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -680,7 +680,7 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt,
       RemoveCopyFlag(MO.getReg(), CopyMI);
   }
 
-  TransferImplicitOps(CopyMI, NewMI);
+  NewMI->copyImplicitOps(CopyMI);
   li_->ReplaceMachineInstrInMaps(CopyMI, NewMI);
   CopyMI->eraseFromParent();
   ReMatCopies.insert(CopyMI);
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index a7d1d9f3fbd..6b9e75f95d3 100644
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -1196,6 +1196,7 @@ bool ARMLoadStoreOpt::MergeReturnIntoLDM(MachineBasicBlock &MBB) {
       unsigned NewOpc = isThumb2 ? ARM::t2LDM_RET : ARM::LDM_RET;
       PrevMI->setDesc(TII->get(NewOpc));
       MO.setReg(ARM::PC);
+      PrevMI->copyImplicitOps(&*MBBI);
       MBB.erase(MBBI);
       return true;
     }