Implement more of the PPC32 Pattern ISel:
1) dynamic stack alloc
2) loads
3) shifts
4) subtract
5) immediate form of add, and, or, xor
6) change flag from -pattern-isel to -enable-ppc-pattern-isel

Remove dead arguments from getGlobalBaseReg in the simple ISel


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20810 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 75f1fc3..e7ab04f 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -37,8 +37,8 @@
   cl::opt<bool> EnablePPCLSR("enable-lsr-for-ppc", 
                              cl::desc("Enable LSR for PPC (beta option!)"), 
                              cl::Hidden);
-  cl::opt<bool> EnablePatternISel("pattern-isel", cl::Hidden,
-                                cl::desc("Enable the pattern isel XXX FIXME"));
+  cl::opt<bool> EnablePatternISel("enable-ppc-pattern-isel", cl::Hidden,
+                                cl::desc("Enable the pattern isel"));
 }
 
 namespace {