; Test merging of blocks that only have PHI nodes in them
;
-; RUN: as < %s | opt -simplifycfg | dis | not grep 'N:'
+; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep N:
;
-int %test(bool %a, bool %b) {
- br bool %a, label %M, label %O
-
-O:
- br bool %b, label %N, label %Q
-Q:
- br label %N
-N:
- %Wp = phi int [0, %O], [1, %Q]
- ; This block should be foldable into M
- br label %M
-
-M:
- %W = phi int [%Wp, %N], [2, %0]
- %R = add int %W, 1
- ret int %R
+define i32 @test(i1 %a, i1 %b) {
+; <label>:0
+ br i1 %a, label %M, label %O
+O: ; preds = %0
+ br i1 %b, label %N, label %Q
+Q: ; preds = %O
+ br label %N
+N: ; preds = %Q, %O
+ ; This block should be foldable into M
+ %Wp = phi i32 [ 0, %O ], [ 1, %Q ] ; <i32> [#uses=1]
+ br label %M
+M: ; preds = %N, %0
+ %W = phi i32 [ %Wp, %N ], [ 2, %0 ] ; <i32> [#uses=1]
+ %R = add i32 %W, 1 ; <i32> [#uses=1]
+ ret i32 %R
}