1 ; The loop canonicalization pass should guarantee that there is one backedge 2 ; for all loops. This allows the -indvars pass to recognize the %IV 3 ; induction variable in this testcase. 4 5 ; RUN: opt < %s -indvars -S | grep indvar 6 7 define i32 @test(i1 %C) { 8 ; <label>:0 9 br label %Loop 10 Loop: ; preds = %BE2, %BE1, %0 11 %IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2] 12 store i32 %IV, i32* null 13 %IV2 = add i32 %IV, 2 ; <i32> [#uses=2] 14 br i1 %C, label %BE1, label %BE2 15 BE1: ; preds = %Loop 16 br label %Loop 17 BE2: ; preds = %Loop 18 br label %Loop 19 } 20 21
