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 04117d3c059a4fb1f72bfdca4bc56c3222ce8576..035c31e7de430fe10c6ca0be409c61a9d1705193 100644 (file)
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -55,6 +55,9 @@ bool PowerPCTargetMachine::addPassesToEmitAssembly(PassManager &PM,
 
   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 @@ void PowerPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
 
   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());