Subzero. Adds a pass for target-specific helper call generation.

src/IceTargetLoweringMIPS32.cpp

Index: src/IceTargetLoweringMIPS32.cpp
diff --git a/src/IceTargetLoweringMIPS32.cpp b/src/IceTargetLoweringMIPS32.cpp
index 8e2480831e44929d6fa989a2770563dd26561188..85a9a46c64a516a113b99577cc13deb91fc4991b 100644
--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -91,6 +91,7 @@ void TargetMIPS32::translateO2() {
 
   // TODO(stichnot): share passes with X86?
   // https://code.google.com/p/nativeclient/issues/detail?id=4094
+  genTargetHelperCalls();
 
   // Merge Alloca instructions, and lay out the stack.
   static constexpr bool SortAndCombineAllocas = true;
@@ -191,6 +192,7 @@ void TargetMIPS32::translateOm1() {
   TimerMarker T(TimerStack::TT_Om1, Func);
 
   // TODO: share passes with X86?
+  genTargetHelperCalls();
 
   // Do not merge Alloca instructions, and lay out the stack.
   static constexpr bool SortAndCombineAllocas = false;