Initial testcases for scalar replacement of aggregates pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6347 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/ScalarRepl/Makefile

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+
+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/ScalarRepl/arraytest.ll

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+; RUN: if as < %s | opt -scalarrepl -mem2reg | dis | grep alloca
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+int %test() {
+  %X = alloca [ 4 x int ]
+  %Y = getelementptr [4x int]* %X, long 0, long 0
+  store int 0, int* %Y
+
+  %Z = load int* %Y
+  ret int %Z
+}

test/Transforms/ScalarRepl/badarray.ll

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+; RUN: as < %s | opt -scalarrepl -mem2reg | dis | grep alloca
+
+int %test() {
+  %X = alloca [ 4 x int ]
+  %Y = getelementptr [4x int]* %X, long 0, long 6 ; Off end of array!
+  store int 0, int* %Y
+
+  %Z = load int* %Y
+  ret int %Z
+}

test/Transforms/ScalarRepl/basictest.ll

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+; RUN: if as < %s | opt -scalarrepl -mem2reg | dis | grep alloca
+; RUN: then exit 1
+; RUN: else exit 0
+; RUN: fi
+
+int %test() {
+  %X = alloca { int, float }
+  %Y = getelementptr {int,float}* %X, long 0, ubyte 0
+  store int 0, int* %Y
+
+  %Z = load int* %Y
+  ret int %Z
+}