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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: opt < %s -indvars -S | FileCheck %s
; CHECK: Loop.backedge:
; CHECK-NOT: br
; CHECK: br label %Loop
define i32 @test(i1 %C) {
; <label>:0
br label %Loop
Loop: ; preds = %BE2, %BE1, %0
%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2]
store i32 %IV, i32* null
%IV2 = add i32 %IV, 2 ; <i32> [#uses=2]
br i1 %C, label %BE1, label %BE2
BE1: ; preds = %Loop
br label %Loop
BE2: ; preds = %Loop
br label %Loop
}
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