[PATCH] [X86] Convert esp-relative movs of function arguments to pushes, step 2

[Michael Kuperstein]

================
Comment at: lib/Target/X86/X86ConvertMovsToPushes.cpp:285
@@ +284,3 @@
+  for (auto I = DefMI; I != FrameSetup; ++I)
+    if (I->mayStore())
+      return nullptr;
----------------
Argh. This is nonsense. Commented one thing, coded another...
(mayStore() is extremely far from being a strong enough condition to allow this.)

http://reviews.llvm.org/D6789

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