xref: /llvm-project/llvm/test/Transforms/JumpThreading/constant-fold-status.ll (revision 63dc31b68b78bc0e5deef21b98cab72de997c471)
1; RUN: opt -passes=jump-threading < %s -S -o - | FileCheck %s
2
3; Reproducer for PR47297.
4
5; The pass did previously not report a correct Modified status in the case
6; where a terminator's condition was successfully constant folded, but there
7; were no other transformations done. This was caught by the pass return
8; status check that is hidden under EXPENSIVE_CHECKS.
9
10; CHECK-LABEL: entry:
11; CHECK-NEXT: %.not = icmp eq i32 ptrtoint (ptr @a to i32), 0
12; CHECK-NEXT: br i1 %.not, label %overflow, label %cont
13
14@a = internal global i16 0
15
16define void @foo(i16 %d) {
17entry:
18  %.not = icmp eq i32 ptrtoint (ptr @a to i32), 0
19  br i1 %.not, label %overflow, label %cont
20
21overflow:                                         ; preds = %entry
22  call void @bar()
23  br label %cont
24
25cont:                                             ; preds = %overflow, %entry
26  ret void
27}
28
29declare void @bar()
30