implement uncond branch insertion for sparc to fix regressions from last night

due to branchfolding


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31157 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 13 insertions, 0 deletions

diff --git a/lib/Target/Sparc/SparcInstrInfo.cpp b/lib/Target/Sparc/SparcInstrInfo.cpp
index 699c9d21d6..6dbb5fe08c 100644
--- a/lib/Target/Sparc/SparcInstrInfo.cpp
+++ b/lib/Target/Sparc/SparcInstrInfo.cpp
@@ -96,3 +96,11 @@ unsigned SparcInstrInfo::isStoreToStackSlot(MachineInstr *MI,
   }
   return 0;
 }
+
+void SparcInstrInfo::InsertBranch(MachineBasicBlock &MBB,MachineBasicBlock *TBB,
+                                  MachineBasicBlock *FBB,
+                                  const std::vector<MachineOperand> &Cond)const{
+  // Can only insert uncond branches so far.
+  assert(Cond.empty() && !FBB && TBB && "Can only handle uncond branches!");
+  BuildMI(&MBB, SP::BA, 1).addMBB(TBB);
+}
\ No newline at end of file
diff --git a/lib/Target/Sparc/SparcInstrInfo.h b/lib/Target/Sparc/SparcInstrInfo.h
index 166793e2e0..9df9bad120 100644
--- a/lib/Target/Sparc/SparcInstrInfo.h
+++ b/lib/Target/Sparc/SparcInstrInfo.h
@@ -61,6 +61,11 @@ public:
   /// not, return 0.  This predicate must return 0 if the instruction has
   /// any side effects other than storing to the stack slot.
   virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
+  
+  
+  virtual void InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
+                            MachineBasicBlock *FBB,
+                            const std::vector<MachineOperand> &Cond) const;
 };
 
 }