-; The loop canonicalization pass should guarantee that there is one backedge
-; for all loops. This allows the -indvars pass to recognize the %IV
+; 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
+; RUN: opt < %s -indvars -S | FileCheck %s
+; CHECK: Loop.backedge:
+; CHECK-NOT: br
+; CHECK: br label %Loop
-int %test(bool %C) {
+define i32 @test(i1 %C) {
+; <label>:0
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:
+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:
+BE2: ; preds = %Loop
br label %Loop
}
+