It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/LoopSimplify/single-backedge.ll b/test/Transforms/LoopSimplify/single-backedge.ll
new file mode 100644
index 0000000..53a6ffb
--- /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-upgrade < %s | llvm-as | opt -indvars | llvm-dis | grep indvar
+
+int %test(bool %C) {
+ br label %Loop
+Loop:
+ %IV = phi uint [1, %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
+}