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 invoke instruction, 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: for.cond:
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.inc
12
13%struct.anon = type { i16 }
14
15@b = global %struct.anon zeroinitializer, align 1
16
17; Function Attrs: nounwind
18define i32 @c() #0 personality i32 (...)* @__CxxFrameHandler3 {
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 %delete.notnull, label %delete.notnull
29
30delete.notnull:                                   ; preds = %for.inc
31  invoke void @g() to label %invoke.cont unwind label %lpad
32
33invoke.cont:                                      ; preds = %delete.notnull
34  br label %for.inc
35
36lpad:                                             ; preds = %delete.notnull
37  %cp = cleanuppad within none []
38  cleanupret from %cp unwind to caller
39
40cont:                                             ; preds = %for.inc
41  %2 = load i16, i16* getelementptr inbounds (%struct.anon, %struct.anon* @b, i32 0, i32 0), align 1
42  br label %for.cond
43}
44
45; Function Attrs: nounwind readnone speculatable willreturn
46declare i32 @llvm.objectsize.i32.p0i8(i8*, i1 immarg, i1 immarg, i1 immarg) #1
47
48declare void @g()
49
50declare i32 @__CxxFrameHandler3(...)
51
52attributes #0 = { nounwind }
53attributes #1 = { nounwind readnone speculatable willreturn }
54