llvm-6502/test/Transforms/LoopSimplify/single-backedge.ll

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; 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 [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
}