Add PPC 440 scheduler and some associated tests (new files)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142171 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/PowerPC/ppc440-msync.ll

@@ -0,0 +1,23 @@
+; RUN: llc < %s -march=ppc32 -o %t
+; RUN: grep sync %t
+; RUN: not grep msync %t 
+; RUN: llc < %s -march=ppc32 -mcpu=440 | grep msync
+
+define i32 @has_a_fence(i32 %a, i32 %b) nounwind {
+entry:
+  fence acquire
+  %cond = icmp eq i32 %a, %b
+  br i1 %cond, label %IfEqual, label %IfUnequal
+
+IfEqual:
+  fence release
+  br label %end
+
+IfUnequal:
+  fence release
+  ret i32 0
+
+end:
+  ret i32 1
+}
+