Get rid of the EdgeMapping map. Instead, just check for BasicBlock

changes before doing phi lowering for switches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102809 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 6 deletions

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 4fb5f54..d3842a6 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -3381,8 +3381,7 @@ ARMTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
 
 MachineBasicBlock *
 ARMTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
-                                               MachineBasicBlock *BB,
-                   DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) const {
+                                               MachineBasicBlock *BB) const {
   const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
   DebugLoc dl = MI->getDebugLoc();
   bool isThumb2 = Subtarget->isThumb2();
@@ -3466,12 +3465,9 @@ ARMTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
     F->insert(It, sinkMBB);
     // Update machine-CFG edges by first adding all successors of the current
     // block to the new block which will contain the Phi node for the select.
-    // Also inform sdisel of the edge changes.
     for (MachineBasicBlock::succ_iterator I = BB->succ_begin(), 
-           E = BB->succ_end(); I != E; ++I) {
-      EM->insert(std::make_pair(*I, sinkMBB));
+           E = BB->succ_end(); I != E; ++I)
       sinkMBB->addSuccessor(*I);
-    }
     // Next, remove all successors of the current block, and add the true
     // and fallthrough blocks as its successors.
     while (!BB->succ_empty())