diff --git a/llvm/test/Transforms/ConstraintElimination/assumes.ll b/llvm/test/Transforms/ConstraintElimination/assumes.ll index f916798188ff8..73a24dd1cac56 100644 --- a/llvm/test/Transforms/ConstraintElimination/assumes.ll +++ b/llvm/test/Transforms/ConstraintElimination/assumes.ll @@ -152,6 +152,34 @@ else: ret i1 %res.4 } +; Test case from PR54217. +define i1 @assume_does_not_dominates_successor_with_may_unwind_call_before_assume(i16 %a, i1 %i.0) { +; CHECK-LABEL: @assume_does_not_dominates_successor_with_may_unwind_call_before_assume( +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 [[I_0:%.*]], label [[EXIT:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: call void @may_unwind() +; CHECK-NEXT: [[C_1:%.*]] = icmp eq i16 [[A:%.*]], 0 +; CHECK-NEXT: call void @llvm.assume(i1 [[C_1]]) +; CHECK-NEXT: br label [[EXIT]] +; CHECK: exit: +; CHECK-NEXT: [[C_2:%.*]] = icmp eq i16 [[A]], 0 +; CHECK-NEXT: ret i1 true +; +entry: + br i1 %i.0, label %exit, label %if.then + +if.then: + call void @may_unwind() + %c.1 = icmp eq i16 %a, 0 + call void @llvm.assume(i1 %c.1) + br label %exit + +exit: + %c.2 = icmp eq i16 %a, 0 + ret i1 %c.2 +} + define i1 @assume_single_bb(i8 %a, i8 %b, i1 %c) { ; CHECK-LABEL: @assume_single_bb( ; CHECK-NEXT: [[ADD_1:%.*]] = add nuw nsw i8 [[A:%.*]], 1 @@ -489,3 +517,4 @@ define i1 @all_uses_after_assume(i8 %a, i8 %b, i1 %c) { %res.2 = xor i1 %res.1, %c.2 ret i1 %res.2 } +