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-basictest3.ll b/llvm/test/Transforms/SCCP/apint-basictest3.ll
new file mode 100644
index 00000000000..144f646fe08
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/apint-basictest3.ll
@@ -0,0 +1,24 @@
+; This is a basic sanity check for constant propogation.  It tests the basic 
+; arithmatic operations.
+
+
+; RUN: llvm-as < %s | opt -sccp | llvm-dis -o /dev/null -f &&
+; RUN: llvm-as < %s | opt -sccp | llvm-dis | not grep mul
+; RUN: llvm-as < %s | opt -sccp | llvm-dis | not grep umod
+
+define i128 @test(i1 %B) {
+	br i1 %B, label %BB1, label %BB2
+BB1:
+	%t1 = add i128 0, 1
+        %t2 = sub i128 0, %t1
+        %t3 = mul i128 %t2, -1
+	br label %BB3
+BB2:
+        %f1 = udiv i128 -1, 1
+        %f2 = add i128 %f1, 1
+        %f3 = umod i128 %f2, 2121
+	br label %BB3
+BB3:
+	%Ret = phi i128 [%t3, %BB1], [%f3, %BB2]
+	ret i128 %Ret
+}