1. fix null program output after some other changes

2. re-enable null.ll test
3. fix some minor style violations

Patch by Reed Kotler.

llvm-svn: 158935

1 files changed, 8 insertions, 1 deletions

diff --git a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
index 4236f74dea3..15e745f7ea1 100644
--- a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -125,7 +125,10 @@ void MipsDAGToDAGISel::InitGlobalBaseReg(MachineFunction &MF) {
   const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
   DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
   unsigned V0, V1, GlobalBaseReg = MipsFI->getGlobalBaseReg();
-  int FI = MipsFI->initGlobalRegFI();
+  int FI;  // should initialize this to some kind of null
+
+  if (!Subtarget.inMips16Mode())
+    FI= MipsFI->initGlobalRegFI();
 
   const TargetRegisterClass *RC = Subtarget.isABI_N64() ?
     (const TargetRegisterClass*)&Mips::CPU64RegsRegClass :
@@ -187,6 +190,10 @@ void MipsDAGToDAGISel::InitGlobalBaseReg(MachineFunction &MF) {
 
   assert(Subtarget.isABI_O32());
 
+  if (Subtarget.inMips16Mode())
+    return; // no need to load GP. It can be calculated anywhere
+
+
   // For O32 ABI, the following instruction sequence is emitted to initialize
   // the global base register:
   //