| ; RUN: opt < %s -indvars -S | FileCheck %s |
| ; PR13371: indvars pass incorrectly substitutes 'undef' values |
| ; |
| ; LFTR should not user %undef as the loop counter. |
| ; CHECK-LABEL: @test( |
| ; CHECK-NOT: icmp{{.*}}undef |
| @.str3 = private constant [6 x i8] c"%lld\0A\00", align 1 |
| declare i32 @printf(i8* noalias nocapture, ...) nounwind |
| define i64 @test() nounwind { |
| func_start: |
| br label %block9 |
| block9: ; preds = %block9,%func_start |
| %undef = phi i64 [ %next_undef, %block9 ], [ undef, %func_start ] |
| %iter = phi i64 [ %next_iter, %block9 ], [ 1, %func_start ] |
| %next_iter = add nsw i64 %iter, 1 |
| %0 = tail call i32 (i8*, ...) @printf(i8* noalias nocapture getelementptr inbounds ([6 x i8], [6 x i8]* @.str3, i64 0, i64 0), i64 %next_iter, i64 %undef) |
| %next_undef = add nsw i64 %undef, 1 |
| %_tmp_3 = icmp slt i64 %next_iter, 100 |
| br i1 %_tmp_3, label %block9, label %exit |
| exit: ; preds = %block9 |
| ret i64 0 |
| } |
