Combine allocas

src/IceTargetLoweringMIPS32.cpp

Index: src/IceTargetLoweringMIPS32.cpp
diff --git a/src/IceTargetLoweringMIPS32.cpp b/src/IceTargetLoweringMIPS32.cpp
index b8fc90b78b334a2685abddd2ee564bbf724a7434..8e2480831e44929d6fa989a2770563dd26561188 100644
--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -92,6 +92,11 @@ void TargetMIPS32::translateO2() {
   // TODO(stichnot): share passes with X86?
   // https://code.google.com/p/nativeclient/issues/detail?id=4094
 
+  // Merge Alloca instructions, and lay out the stack.
+  static constexpr bool SortAndCombineAllocas = true;
+  Func->processAllocas(SortAndCombineAllocas);
+  Func->dump("After Alloca processing");
+
   if (!Ctx->getFlags().getPhiEdgeSplit()) {
     // Lower Phi instructions.
     Func->placePhiLoads();
@@ -187,6 +192,11 @@ void TargetMIPS32::translateOm1() {
 
   // TODO: share passes with X86?
 
+  // Do not merge Alloca instructions, and lay out the stack.
+  static constexpr bool SortAndCombineAllocas = false;
+  Func->processAllocas(SortAndCombineAllocas);
+  Func->dump("After Alloca processing");
+
   Func->placePhiLoads();
   if (Func->hasError())
     return;