1; RUN: opt -loop-unswitch -enable-new-pm=0 %s -S | FileCheck %s
2
3; When hoisting simple values out from a loop, and not being able to unswitch
4; the loop due to the convergent call, the pass would return an incorrect
5; Modified status. This was caught by the pass return status check that is
6; hidden under EXPENSIVE_CHECKS.
7
8; CHECK-LABEL: entry:
9; CHECK-NEXT: %0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
10; CHECK-NEXT: %1 = icmp uge i32 %0, 1
11; CHECK-NEXT: br label %for.cond
12
13%struct.anon = type { i16 }
14
15@b = global %struct.anon zeroinitializer, align 1
16
17; Function Attrs: nounwind
18define i16 @c() #0 {
19entry:
20  br label %for.cond
21
22for.cond:                                         ; preds = %cont, %entry
23  br label %for.inc
24
25for.inc:                                          ; preds = %for.cond
26  %0 = call i32 @llvm.objectsize.i32.p0i8(i8* bitcast (%struct.anon* @b to i8*), i1 false, i1 false, i1 false)
27  %1 = icmp uge i32 %0, 1
28  br i1 %1, label %cont, label %cont
29
30cont:                                             ; preds = %for.inc
31  call void @conv() convergent
32  %2 = load i16, i16* getelementptr inbounds (%struct.anon, %struct.anon* @b, i32 0, i32 0), align 1
33  br label %for.cond
34}
35
36; Function Attrs: nounwind readnone speculatable willreturn
37declare i32 @llvm.objectsize.i32.p0i8(i8*, i1 immarg, i1 immarg, i1 immarg) #1
38
39declare void @conv() convergent
40
41attributes #0 = { nounwind }
42attributes #1 = { nounwind readnone speculatable willreturn }
43