New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13020 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/IndVarsSimplify/loop_evaluate_1.ll b/test/Transforms/IndVarsSimplify/loop_evaluate_1.ll
new file mode 100644 (file)
index 0000000..9fb4d3e
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/loop_evaluate_1.ll
@@ -0,0 +1,21 @@
+; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | not grep br
+;
+; Testcase distilled from 256.bzip2
+
+int %main() {
+entry:
+        br label %loopentry
+
+loopentry:              ; preds = %entry, %loopentry
+        %indvar1 = phi uint [ 0, %entry ], [ %indvar.next2, %loopentry ]                ; <uint> [#uses=1]
+        %h.0 = phi int [ %tmp.2, %loopentry ], [ 4, %entry ]            ; <int> [#uses=1]
+        %tmp.1 = mul int %h.0, 3                ; <int> [#uses=1]
+        %tmp.2 = add int %tmp.1, 1              ; <int> [#uses=1]
+        %indvar.next2 = add uint %indvar1, 1            ; <uint> [#uses=2]
+        %exitcond3 = setne uint %indvar.next2, 4                ; <bool> [#uses=1]
+        br bool %exitcond3, label %loopentry, label %loopexit
+
+loopexit:               ; preds = %loopentry
+        ret int %tmp.2
+}
+