Add LICM pass to compiler


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2613 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/gccas/gccas.cpp b/tools/gccas/gccas.cpp
index cd4ccd2..c2f7a8c 100644
--- a/tools/gccas/gccas.cpp
+++ b/tools/gccas/gccas.cpp
@@ -80,6 +80,7 @@
     Passes.add(createReassociatePass());            // Reassociate expressions
     Passes.add(createInstructionCombiningPass());   // Combine silly seq's
     Passes.add(createDeadInstEliminationPass());    // Kill InstCombine remnants
+    Passes.add(createLICMPass());                   // Hoist loop invariants
     Passes.add(createGCSEPass());                   // Remove common subexprs
     Passes.add(createSCCPPass());                   // Constant prop with SCCP
     Passes.add(createDeadCodeEliminationPass());    // Remove Dead code/vars