Check in the first test: make sure getelementptr gets folded

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2288 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/InstCombine/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/InstCombine/getelementptr.ll

@@ -0,0 +1,21 @@
+; The %A getelementptr instruction should be eliminated here
+
+; RUN: if as < %s | opt -instcombine -dce | dis | grep getelementptr | grep -v '%C'
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+implementation
+
+int *"foo"(int * %I)
+begin
+	%A = getelementptr int* %I, uint 17
+	store int 23, int* %A
+
+	%B = load int* %A
+	store int %B, int* %A, uint 0
+
+	%C = getelementptr int* %A
+	ret int* %C
+end
+