Fix all of those problems that the PPC backend has running 176.gcc :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14565 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 04117d3..035c31e 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -55,6 +55,9 @@
 
   PM.add(createLowerConstantExpressionsPass());
 
+  // Make sure that no unreachable blocks are instruction selected.
+  PM.add(createUnreachableBlockEliminationPass());
+
   PM.add(createPPCSimpleInstructionSelector(*this));
 
   if (PrintMachineCode)
@@ -86,6 +89,9 @@
 
   PM.add(createLowerConstantExpressionsPass());
 
+  // Make sure that no unreachable blocks are instruction selected.
+  PM.add(createUnreachableBlockEliminationPass());
+
   PM.add(createPPCSimpleInstructionSelector(TM));
   PM.add(createRegisterAllocator());
   PM.add(createPrologEpilogCodeInserter());