MIPS: [runtime] Unify and simplify how frames are marked.

src/compiler/mips64/code-generator-mips64.cc

Index: src/compiler/mips64/code-generator-mips64.cc
diff --git a/src/compiler/mips64/code-generator-mips64.cc b/src/compiler/mips64/code-generator-mips64.cc
index 373a1a6abce6efacd5e6a6f00d62f25a4723aa65..59a54cd8dc63daa6a0d0b024a65e87f1ce1e4c3d 100644
--- a/src/compiler/mips64/code-generator-mips64.cc
+++ b/src/compiler/mips64/code-generator-mips64.cc
@@ -1831,13 +1831,12 @@ void CodeGenerator::AssembleDeoptimizerCall(
 
 void CodeGenerator::AssemblePrologue() {
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
-  if (descriptor->IsCFunctionCall()) {
-    __ Push(ra, fp);
-    __ mov(fp, sp);
-  } else if (descriptor->IsJSFunctionCall()) {
-    __ Prologue(this->info()->GeneratePreagedPrologue());
-  } else if (frame()->needs_frame()) {
-    __ StubPrologue();
+  if (frame()->needs_frame()) {
+    if (descriptor->flags() & CallDescriptor::kHasStandardFrameHeader) {
+      __ Prologue(this->info()->GeneratePreagedPrologue());
+    } else {
+      __ StubPrologue();
+    }
   } else {
     frame()->SetElidedFrameSizeInSlots(0);
   }