Initial testcases for CFG simplify (which is part of DCE for now)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2466 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/SimplifyCFG/Makefile

@@ -0,0 +1,10 @@
+
+LEVEL = ../../../..
+include $(LEVEL)/test/Makefile.tests
+
+TESTS := $(wildcard *.ll)
+
+all:: $(addprefix Output/, $(TESTS:%.ll=%.ll.out))
+
+Output/%.ll.out: %.ll Output/.dir $(LOPT)
+	-$(TESTRUNR) $<

test/Transforms/SimplifyCFG/basictest.ll

@@ -0,0 +1,27 @@
+; Test CFG simplify removal of branch instructions...
+;
+; RUN: if as < %s | opt -dce | dis | grep br
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+
+void "test1"() {
+	br label %BB1
+BB1:
+	ret void
+}
+
+void "test2"() {
+	ret void
+BB1:
+	ret void
+}
+
+void "test3"(bool %T) {
+	br bool %T, label %BB1, label %BB1
+BB1:
+	ret void
+}
+
+