MIPS: Followup to '[turbofan] Add basic support for calling to (a subset of) C functions.'

src/compiler/mips/instruction-selector-mips.cc

Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index ce40753995db0a93dded1fd3b1c8e03b1b6a4f84..e2ab0ed2dd9bc8498575663123547e5e6cc4e610 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -533,11 +533,12 @@ void InstructionSelector::VisitCall(Node* node, BasicBlock* handler) {
          0, nullptr, 0, nullptr);
 
     // Poke any stack arguments.
-    int slot = kCArgSlotCount;
-    for (Node* node : buffer.pushed_nodes) {
-      Emit(kMipsStoreToStackSlot, g.NoOutput(), g.UseRegister(node),
-           g.TempImmediate(slot << kPointerSizeLog2));
-      ++slot;
+    for (size_t n = 0; n < buffer.pushed_nodes.size(); ++n) {
+      if (Node* node = buffer.pushed_nodes[n]) {
+        int const slot = static_cast<int>(n);
+        Emit(kMipsStoreToStackSlot, g.NoOutput(), g.UseRegister(node),
+             g.TempImmediate(slot << kPointerSizeLog2));
+      }
     }
   } else {
     // Possibly align stack here for functions.