[turbofan] Fewer gap moves for tail calls

src/compiler/ia32/code-generator-ia32.cc

Index: src/compiler/ia32/code-generator-ia32.cc
diff --git a/src/compiler/ia32/code-generator-ia32.cc b/src/compiler/ia32/code-generator-ia32.cc
index 8e2de0fba61d84a5866cd1c533a801cca0ed50a3..d21677274b8d79c4a05e19605c62e5ad66f2a582 100644
--- a/src/compiler/ia32/code-generator-ia32.cc
+++ b/src/compiler/ia32/code-generator-ia32.cc
@@ -337,9 +337,6 @@ void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) {
   if (sp_slot_delta > 0) {
     __ add(esp, Immediate(sp_slot_delta * kPointerSize));
   }
-  if (frame()->needs_frame()) {
-    __ pop(ebp);
-  }
   frame_access_state()->SetFrameAccessToDefault();
 }
 
@@ -350,6 +347,9 @@ void CodeGenerator::AssemblePrepareTailCall(int stack_param_delta) {
     __ sub(esp, Immediate(-sp_slot_delta * kPointerSize));
     frame_access_state()->IncreaseSPDelta(-sp_slot_delta);
   }
+  if (frame()->needs_frame()) {
+    __ mov(ebp, MemOperand(ebp, 0));
+  }
   frame_access_state()->SetFrameAccessToSP();
 }