Record function call targets, use them for inlining.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index 6f87a256c57da9b565f4c00119d7434f3ef54d46..d7ca3e2999fa094320e3da5459330bd17b518061 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1688,7 +1688,13 @@ LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) {
 
 
 LInstruction* LChunkBuilder::DoCheckFunction(HCheckFunction* instr) {
-  LOperand* value = UseAtStart(instr->value());
+  // If the target is in new space, we'll emit a global cell compare and so
+  // want the value in a register.  If the target gets promoted before we
+  // emit code, we will still get the register but will do an immediate
+  // compare instead of the cell compare.  This is safe.
+  LOperand* value = Isolate::Current()->heap()->InNewSpace(*instr->target())
+      ? UseRegisterAtStart(instr->value())
+      : UseAtStart(instr->value());
   return AssignEnvironment(new LCheckFunction(value));
 }