eliminate the X86 version of GetGlobalValueSymbol, allowing

[oota-llvm.git] / lib / Target / PIC16 / PIC16InstrInfo.cpp

diff --git a/lib/Target/PIC16/PIC16InstrInfo.cpp b/lib/Target/PIC16/PIC16InstrInfo.cpp
index cb0c41bc0b5cc7a60de29f10ba1fc081e28cd4ca..2fb405e947ff8c80dd41172b7c151854d4526a10 100644 (file)
--- a/lib/Target/PIC16/PIC16InstrInfo.cpp
+++ b/lib/Target/PIC16/PIC16InstrInfo.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "PIC16.h"
+#include "PIC16ABINames.h"
 #include "PIC16InstrInfo.h"
 #include "PIC16TargetMachine.h"
 #include "PIC16GenInstrInfo.inc"
@@ -213,3 +214,25 @@ InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
   // returning NULL.
   return 0;
 }
+
+bool PIC16InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
+                                   MachineBasicBlock *&TBB,
+                                   MachineBasicBlock *&FBB,
+                                   SmallVectorImpl<MachineOperand> &Cond,
+                                   bool AllowModify) const {
+  MachineBasicBlock::iterator I = MBB.end();
+  if (I == MBB.begin())
+    return true;
+
+  // Get the terminator instruction.
+  --I;
+  // Handle unconditional branches. If the unconditional branch's target is
+  // successor basic block then remove the unconditional branch. 
+  if (I->getOpcode() == PIC16::br_uncond  && AllowModify) {
+    if (MBB.isLayoutSuccessor(I->getOperand(0).getMBB())) {
+      TBB = 0;
+      I->eraseFromParent();
+    }
+  }
+  return true;
+}