[PATCH] [x86 fast-isel] Materialize allocas with the correct-sized lea for ILP32

[Reid Kleckner]

lgtm

I suspect we'll see more issues like this.

================
Comment at: test/CodeGen/X86/x32-alloca.ll:17
@@ +16,1 @@
+}
\ No newline at end of file

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please fix

http://reviews.llvm.org/D6136