FastISel: Factor out common code; NFC intended

This should be no functional change but for the record: For three cases
in X86FastISel this will change the order in which the FalseMBB and
TrueMBB of a conditional branch is addedd to the successor/predecessor
lists.

llvm-svn: 245997

1 files changed, 12 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 8cf859cf517..d5011d2d62d 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -1408,6 +1408,18 @@ void FastISel::fastEmitBranch(MachineBasicBlock *MSucc, DebugLoc DbgLoc) {
   FuncInfo.MBB->addSuccessor(MSucc, BranchWeight);
 }
 
+void FastISel::finishCondBranch(const BasicBlock *BranchBB,
+                                MachineBasicBlock *TrueMBB,
+                                MachineBasicBlock *FalseMBB) {
+  uint32_t BranchWeight = 0;
+  if (FuncInfo.BPI)
+    BranchWeight = FuncInfo.BPI->getEdgeWeight(BranchBB,
+                                               TrueMBB->getBasicBlock());
+  FuncInfo.MBB->addSuccessor(TrueMBB, BranchWeight);
+
+  fastEmitBranch(FalseMBB, DbgLoc);
+}
+
 /// Emit an FNeg operation.
 bool FastISel::selectFNeg(const User *I) {
   unsigned OpReg = getRegForValue(BinaryOperator::getFNegArgument(I));