Plumb useAA through TargetTransformInfo to remove Transforms->CodeGen header dependency

Thanks to echristo for the pointers on direction.

llvm-svn: 328737
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 88c682a..2cd7f1c 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -343,7 +343,7 @@
     // Call SeparateConstOffsetFromGEP pass to extract constants within indices
     // and lower a GEP with multiple indices to either arithmetic operations or
     // multiple GEPs with single index.
-    addPass(createSeparateConstOffsetFromGEPPass(TM, true));
+    addPass(createSeparateConstOffsetFromGEPPass(true));
     // Call EarlyCSE pass to find and remove subexpressions in the lowered
     // result.
     addPass(createEarlyCSEPass());