Define a statistic for the number of slots that were filled with useful

[oota-llvm.git] / lib / Target / Mips / MipsTargetMachine.cpp

diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index 25211d472f07ec1f906c2327e8cd6c79d558327d..a318f81352af76f1016e25378dda495a192d7e04 100644 (file)
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -96,7 +96,10 @@ addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel)
 
 bool MipsTargetMachine::
 addPreRegAlloc(PassManagerBase &PM, CodeGenOpt::Level OptLevel) {
-  PM.add(createMipsEmitGPRestorePass(*this));
+  // Do not restore $gp if target is Mips64.
+  // In N32/64, $gp is a callee-saved register.
+  if (!Subtarget.hasMips64())
+    PM.add(createMipsEmitGPRestorePass(*this));
   return true;
 }