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authorChris Lattner <sabre@nondot.org>2003-10-12 22:26:42 +0000
committerChris Lattner <sabre@nondot.org>2003-10-12 22:26:42 +0000
commit5fdd902b55a19a556cfc90855a014d7f8a9eaea2 (patch)
tree28bc29aa71142490a86b01761f3b2c1bf341f6ed /test
parent2ef1236e4abc91fdd0477e504a12b8dabfe4ab27 (diff)
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new testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9064 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r--test/Transforms/LoopSimplify/single-backedge.ll17
1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/LoopSimplify/single-backedge.ll b/test/Transforms/LoopSimplify/single-backedge.ll
new file mode 100644
index 0000000000..63fa33a958
--- /dev/null
+++ b/test/Transforms/LoopSimplify/single-backedge.ll
@@ -0,0 +1,17 @@
+; The loop canonicalization pass should guarantee that there is one backedge
+; for all loops. This allows the -indvars pass to recognize the %IV
+; induction variable in this testcase.
+
+; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep indvar
+
+int %test(bool %C) {
+ br label %Loop
+Loop:
+ %IV = phi uint [0, %0], [%IV2, %BE1], [%IV2, %BE2]
+ %IV2 = add uint %IV, 2
+ br bool %C, label %BE1, label %BE2
+BE1:
+ br label %Loop
+BE2:
+ br label %Loop
+}