test/Transforms/LoopVectorize/debugloc-optimize-vfuf-term.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S < %s -passes=loop-vectorize -force-vector-width=2 | FileCheck %s
;; Tests that when we simplify the loop-exit branch condition, we preserve the
;; !dbg attachment for all loop-exit branches.

define i32 @foo(ptr %p) {
; CHECK-LABEL: define i32 @foo(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    store i8 0, ptr [[P]], align 1, !dbg [[DBG3:![0-9]+]]
; CHECK-NEXT:    br label %[[MIDDLE_BLOCK:.*]], !dbg [[DBG7:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br i1 true, label %[[EXIT:.*]], label %[[SCALAR_PH]], !dbg [[DBG8:![0-9]+]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 2, %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ], !dbg [[DBG9:![0-9]+]]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], !dbg [[DBG9]]
; CHECK-NEXT:    [[CONV:%.*]] = trunc i64 0 to i8, !dbg [[DBG7]]
; CHECK-NEXT:    store i8 [[CONV]], ptr [[P]], align 1, !dbg [[DBG3]]
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1, !dbg [[DBG10:![0-9]+]]
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 1, !dbg [[DBG11:![0-9]+]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label %[[EXIT]], label %[[LOOP]], !dbg [[DBG8]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret i32 0
;
entry:
  br label %loop

loop:                                          ; preds = %loop, %entry
  %iv = phi i64 [ %iv.next, %loop ], [ 0, %entry ], !dbg !3
  %conv = trunc i64 0 to i8, !dbg !4
  store i8 %conv, ptr %p, align 1, !dbg !5
  %iv.next = add i64 %iv, 1, !dbg !6
  %exitcond = icmp eq i64 %iv, 1, !dbg !7
  br i1 %exitcond, label %exit, label %loop, !dbg !8

exit:                              ; preds = %loop
  ret i32 0
}

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2}

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 20.0.0git")
!1 = !DIFile(filename: "test.cpp", directory: "/")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = !DILocation(line: 4, scope: !9)
!4 = !DILocation(line: 5, scope: !9)
!5 = !DILocation(line: 6, scope: !9)
!6 = !DILocation(line: 7, scope: !9)
!7 = !DILocation(line: 8, scope: !9)
!8 = !DILocation(line: 9, scope: !9)
!9 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 11, type: !10, unit: !0, retainedNodes: !11)
!10 = distinct !DISubroutineType(types: !11)
!11 = !{}
;.
; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: [[META1:![0-9]+]], producer: "{{.*}}clang version {{.*}}", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug)
; CHECK: [[META1]] = !DIFile(filename: "test.cpp", directory: {{.*}})
; CHECK: [[DBG3]] = !DILocation(line: 6, scope: [[META4:![0-9]+]])
; CHECK: [[META4]] = distinct !DISubprogram(name: "foo", scope: [[META1]], file: [[META1]], line: 11, type: [[META5:![0-9]+]], spFlags: DISPFlagDefinition, unit: [[META0]], retainedNodes: [[META6:![0-9]+]])
; CHECK: [[META5]] = distinct !DISubroutineType(types: [[META6]])
; CHECK: [[META6]] = !{}
; CHECK: [[DBG7]] = !DILocation(line: 5, scope: [[META4]])
; CHECK: [[DBG8]] = !DILocation(line: 9, scope: [[META4]])
; CHECK: [[DBG9]] = !DILocation(line: 4, scope: [[META4]])
; CHECK: [[DBG10]] = !DILocation(line: 7, scope: [[META4]])
; CHECK: [[DBG11]] = !DILocation(line: 8, scope: [[META4]])
; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META13:![0-9]+]], [[META14:![0-9]+]]}
; CHECK: [[META13]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[META14]] = !{!"llvm.loop.isvectorized", i32 1}
;.