[PATCH] Expand BuildPairF64 by spilling to stack slot and reloading from it

[Daniel Sanders]

LGTM with one last change to match the function labels in all the RUN lines of the testcase.

As discussed, I'll cover the move-from-fpu case for FPXX in my FP64A patch.

================
Comment at: test/CodeGen/Mips/fpxx.ll:23
@@ +22,3 @@
+
+; 32-FPXX-LABEL: test1:
+
----------------
You can make this apply to all the tests using multiple FileCheck prefixes (e.g. 'FileCheck %s -check-prefix=ALL -check-prefix=32-NOFPXX' and using 'ALL-LABEL:').

Likewise for the others below

http://reviews.llvm.org/D4465