Add long branch expansion pass for MIPS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158433 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 1 deletions

diff --git a/lib/Target/Mips/Mips.h b/lib/Target/Mips/Mips.h
index 5ce2347..2963f7e 100644
--- a/lib/Target/Mips/Mips.h
+++ b/lib/Target/Mips/Mips.h
@@ -24,6 +24,7 @@ namespace llvm {
 
   FunctionPass *createMipsISelDag(MipsTargetMachine &TM);
   FunctionPass *createMipsDelaySlotFillerPass(MipsTargetMachine &TM);
+  FunctionPass *createMipsLongBranchPass(MipsTargetMachine &TM);
   FunctionPass *createMipsJITCodeEmitterPass(MipsTargetMachine &TM,
                                              JITCodeEmitter &JCE);
 
diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index 7ba610e..b03baa8 100644
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -124,7 +124,13 @@ bool MipsPassConfig::addInstSelector() {
 // machine code is emitted. return true if -print-machineinstrs should
 // print out the code after the passes.
 bool MipsPassConfig::addPreEmitPass() {
-  PM->add(createMipsDelaySlotFillerPass(getMipsTargetMachine()));
+  MipsTargetMachine &TM = getMipsTargetMachine();
+  PM->add(createMipsDelaySlotFillerPass(TM));
+
+  // NOTE: long branch has not been implemented for mips16.
+  if (TM.getSubtarget<MipsSubtarget>().hasStandardEncoding())
+    PM->add(createMipsLongBranchPass(TM));
+
   return true;
 }