Instrumented local variables and implemented runtime.

src/IceCfg.cpp

Index: src/IceCfg.cpp
diff --git a/src/IceCfg.cpp b/src/IceCfg.cpp
index a113b95d47948ddd03c1bbe7bd864c2aa3642bd5..3df85697c9e89d98eed7de99e0b10531bfb40e3d 100644
--- a/src/IceCfg.cpp
+++ b/src/IceCfg.cpp
@@ -654,7 +654,7 @@ void Cfg::sortAndCombineAllocas(CfgVector<Inst *> &Allocas,
   std::sort(Allocas.begin(), Allocas.end(), [](Inst *I1, Inst *I2) {
     auto *A1 = llvm::dyn_cast<InstAlloca>(I1);
     auto *A2 = llvm::dyn_cast<InstAlloca>(I2);
-    return A1->getAlignInBytes() > A2->getAlignInBytes();
+    return A1->getAlignInBytes() >= A2->getAlignInBytes();
   });
   // Process the allocas in order of decreasing stack alignment.  This allows
   // us to pack less-aligned pieces after more-aligned ones, resulting in less
@@ -746,6 +746,8 @@ void Cfg::processAllocas(bool SortAndCombine) {
   bool HasLargeAlignment = false;
   bool HasDynamicAllocation = false;
   for (Inst &Instr : EntryNode->getInsts()) {
+    if (Instr.isDeleted())
+      continue;
     if (auto *Alloca = llvm::dyn_cast<InstAlloca>(&Instr)) {
       uint32_t AlignmentParam = Alloca->getAlignInBytes();
       if (AlignmentParam > StackAlignment)
@@ -769,6 +771,8 @@ void Cfg::processAllocas(bool SortAndCombine) {
     if (Node == EntryNode)
       continue;
     for (Inst &Instr : Node->getInsts()) {
+      if (Instr.isDeleted())
+        continue;
       if (llvm::isa<InstAlloca>(&Instr)) {
         // Allocations outside the entry block require a frame pointer.
         HasDynamicAllocation = true;
@@ -791,6 +795,8 @@ void Cfg::processAllocas(bool SortAndCombine) {
   // Maximum alignment used by any alloca.
   uint32_t MaxAlignment = StackAlignment;
   for (Inst &Instr : EntryNode->getInsts()) {
+    if (Instr.isDeleted())
+      continue;
     if (auto *Alloca = llvm::dyn_cast<InstAlloca>(&Instr)) {
       if (!llvm::isa<Constant>(Alloca->getSizeInBytes()))
         continue;