Add the SCCP regression tests for APInt expressions. These test cases

turned up some regressions that have since been fixed. We don't want to
loose the regression tests.

Test cases by Guoling Han.

llvm-svn: 35974

1 files changed, 24 insertions, 0 deletions

diff --git a/llvm/test/Transforms/SCCP/apint-bigarray.ll b/llvm/test/Transforms/SCCP/apint-bigarray.ll
new file mode 100644
index 00000000000..b7c6d995860
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/apint-bigarray.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | opt -sccp | llvm-dis -o /dev/null -f &&
+; RUN: llvm-as < %s | opt -sccp | llvm-dis | not grep '%X'
+
+@G =  global [1000000 x i10000] zeroinitializer
+
+define internal i10000* @test(i10000 %Arg) {
+	%X = getelementptr [1000000 x i10000]* @G, i32 0, i32 999
+        store i10000 %Arg, i10000* %X
+	ret i10000* %X
+}
+
+define i10000 @caller()
+{
+        %Y = call i10000* @test(i10000 -1)
+        %Z = load i10000* %Y
+        ret i10000 %Z 
+}
+
+define i10000 @caller2()
+{
+        %Y = call i10000* @test(i10000 1)
+        %Z = load i10000* %Y
+        ret i10000 %Z 
+}