Register Passes: Use -polly-optimizer=(isl|pocc) to switch optimizers

This replaces the old option -polly-use-pocc. Also call the passes uniformly
-polly-opt-pocc and -polly-opt-isl.

llvm-svn: 145071
diff --git a/polly/lib/ScheduleOptimizer.cpp b/polly/lib/ScheduleOptimizer.cpp
index 21e2530..d2beb03 100644
--- a/polly/lib/ScheduleOptimizer.cpp
+++ b/polly/lib/ScheduleOptimizer.cpp
@@ -32,7 +32,7 @@
 #include "isl/schedule.h"
 #include "isl/band.h"
 
-#define DEBUG_TYPE "polly-optimize-isl"
+#define DEBUG_TYPE "polly-opt-isl"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/CommandLine.h"
 
@@ -432,11 +432,11 @@
   AU.addRequired<Dependences>();
 }
 
-INITIALIZE_PASS_BEGIN(IslScheduleOptimizer, "polly-optimize-isl",
+INITIALIZE_PASS_BEGIN(IslScheduleOptimizer, "polly-opt-isl",
                       "Polly - Optimize schedule of SCoP", false, false)
 INITIALIZE_PASS_DEPENDENCY(Dependences)
 INITIALIZE_PASS_DEPENDENCY(ScopInfo)
-INITIALIZE_PASS_END(IslScheduleOptimizer, "polly-optimize-isl",
+INITIALIZE_PASS_END(IslScheduleOptimizer, "polly-opt-isl",
                       "Polly - Optimize schedule of SCoP", false, false)
 
 Pass* polly::createIslScheduleOptimizerPass() {