b629d4b912
Global variables that reference themselves alongside a function that is called indirectly can cause an infinite loop in `AAGlobalValueInfoFloating`. The recursive reference is continually pushed back into the workload, causing the attributor to hang indefinitely.
48 lines
1.4 KiB
LLVM
48 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
|
|
; RUN: opt -passes=attributor -S < %s | FileCheck %s
|
|
|
|
; Global variables that reference themselves alongside a function that is called indirectly
|
|
; used to cause an infinite loop in the attributor. The recursive reference was continually
|
|
; pushed back into the workload, causing the attributor to hang indefinitely.
|
|
|
|
@glob1 = global { ptr, ptr } { ptr @glob1, ptr @fnc1 }
|
|
@glob2 = global { ptr, ptr } { ptr @glob3, ptr @fnc2 }
|
|
@glob3 = global { ptr, ptr } { ptr @glob2, ptr @fnc2 }
|
|
|
|
define internal void @fnc1() {
|
|
; CHECK-LABEL: define internal void @fnc1(
|
|
; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
ret void
|
|
}
|
|
|
|
define internal void @fnc2() {
|
|
; CHECK-LABEL: define internal void @fnc2(
|
|
; CHECK-SAME: ) #[[ATTR0]] {
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
ret void
|
|
}
|
|
|
|
define dso_local void @indr_caller(ptr %0) {
|
|
; CHECK-LABEL: define dso_local void @indr_caller(
|
|
; CHECK-SAME: ptr nocapture nofree noundef nonnull [[TMP0:%.*]]) {
|
|
; CHECK-NEXT: call void [[TMP0]]()
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
call void %0()
|
|
ret void
|
|
}
|
|
|
|
define void @main() {
|
|
; CHECK-LABEL: define void @main() {
|
|
; CHECK-NEXT: call void @indr_caller(ptr nocapture nofree noundef nonnull @fnc1)
|
|
; CHECK-NEXT: call void @indr_caller(ptr nocapture nofree noundef nonnull @fnc2)
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
call void @indr_caller(ptr @fnc1)
|
|
call void @indr_caller(ptr @fnc2)
|
|
ret void
|
|
}
|