Merge V8 5.3.332.45.  DO NOT MERGE

Test: Manual

FPIIM-449

Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/src/x87/code-stubs-x87.h b/src/x87/code-stubs-x87.h
index 39a4603..6290cfe 100644
--- a/src/x87/code-stubs-x87.h
+++ b/src/x87/code-stubs-x87.h
@@ -298,8 +298,8 @@
                                   Register r2,
                                   Register r3) {
       for (int i = 0; i < Register::kNumRegisters; i++) {
-        Register candidate = Register::from_code(i);
-        if (candidate.IsAllocatable()) {
+        if (RegisterConfiguration::Crankshaft()->IsAllocatableGeneralCode(i)) {
+          Register candidate = Register::from_code(i);
           if (candidate.is(ecx)) continue;
           if (candidate.is(r1)) continue;
           if (candidate.is(r2)) continue;