33 lines
963 B
LLVM
33 lines
963 B
LLVM
|
; REQUIRES: asserts
|
||
|
|
; RUN: opt < %s -passes='unswitch<nontrivial>' -disable-output
|
||
|
|
; RUN: opt < %s -simple-loop-unswitch -enable-nontrivial-unswitch -disable-output
|
||
|
|
|
||
|
|
|
||
|
|
; Make sure we don't crash due to a dangling use of %tmp2 in bb7.
|
||
|
|
define void @test.use_in_dead_block(i1 %arg1, i1 %arg2) {
|
||
|
|
bb1:
|
||
|
|
br label %bb2
|
||
|
|
|
||
|
|
bb2: ; preds = %bb4, %bb1
|
||
|
|
%tmp1 = phi i64 [ 0, %bb4 ], [ 42, %bb1 ]
|
||
|
|
br i1 %arg1, label %bb3, label %bb6
|
||
|
|
|
||
|
|
bb3: ; preds = %bb2
|
||
|
|
br i1 %arg2, label %bb5, label %bb4
|
||
|
|
|
||
|
|
bb4: ; preds = %bb3
|
||
|
|
%tmp2 = add i32 1, 1
|
||
|
|
br label %bb2
|
||
|
|
|
||
|
|
bb5: ; preds = %bb3
|
||
|
|
ret void
|
||
|
|
|
||
|
|
bb6: ; preds = %bb2
|
||
|
|
%tmp3 = add i64 %tmp1, 1
|
||
|
|
ret void
|
||
|
|
|
||
|
|
bb7: ; No predecessors!
|
||
|
|
%tmp4 = add i32 %tmp2, 1
|
||
|
|
ret void
|
||
|
|
}
|