test/DebugInfo/KeyInstructions/Generic/simplifycfg-branch-fold.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt %s -S -passes=simplifycfg -bonus-inst-threshold=2 | FileCheck %s

;;          +---------------+
;;          |               |
;;     +--> b --+           |
;;     |        v           v
;; --> a        d --> e --> f -->
;;     |        ^           ^
;;     +--> c --+           |
;;          |               |
;;          +---------------+

;; Block d gets folded into preds b and c. Check the cloned instructions get
;; remapped DILocation atomGroup numbers in each of the preds. Additionally
;; check that the branches each inherit the atomGroup of the folded branch.

declare i32 @g(...)
define void @f(i1 %c0, i1 %c1, i1 %c2, i32 %x, i32 %y) !dbg !17 {
; CHECK-LABEL: define void @f(
; CHECK-SAME: i1 [[C0:%.*]], i1 [[C1:%.*]], i1 [[C2:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]]) !dbg [[DBG6:![0-9]+]] {
; CHECK-NEXT:  [[A:.*:]]
; CHECK-NEXT:    br i1 [[C0]], label %[[B:.*]], label %[[C:.*]]
; CHECK:       [[B]]:
; CHECK-NEXT:    [[AND_OLD:%.*]] = and i32 [[X]], [[Y]], !dbg [[DBG8:![0-9]+]]
; CHECK-NEXT:    [[CMP_OLD:%.*]] = icmp eq i32 [[AND_OLD]], 0, !dbg [[DBG9:![0-9]+]]
; CHECK-NEXT:    [[OR_COND1:%.*]] = select i1 [[C1]], i1 true, i1 [[CMP_OLD]], !dbg [[DBG10:![0-9]+]]
; CHECK-NEXT:    br i1 [[OR_COND1]], label %[[F:.*]], label %[[E:.*]], !dbg [[DBG11:![0-9]+]]
; CHECK:       [[C]]:
; CHECK-NEXT:    [[AND:%.*]] = and i32 [[X]], [[Y]], !dbg [[DBG12:![0-9]+]]
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[AND]], 0, !dbg [[DBG13:![0-9]+]]
; CHECK-NEXT:    [[OR_COND:%.*]] = select i1 [[C2]], i1 true, i1 [[CMP]], !dbg [[DBG10]]
; CHECK-NEXT:    br i1 [[OR_COND]], label %[[F]], label %[[E]], !dbg [[DBG14:![0-9]+]]
; CHECK:       [[E]]:
; CHECK-NEXT:    [[TMP0:%.*]] = tail call i32 (...) @g()
; CHECK-NEXT:    br label %[[F]]
; CHECK:       [[F]]:
; CHECK-NEXT:    ret void
;
a:
  br i1 %c0, label %b, label %c

b:
  br i1 %c1, label %f, label %d, !dbg !18

c:
  br i1 %c2, label %f, label %d, !dbg !18

d:
  %and = and i32 %x, %y, !dbg !19
  %cmp = icmp eq i32 %and, 0, !dbg !20
  br i1 %cmp, label %f, label %e, !dbg !21

e:
  %7 = tail call i32 (...) @g()
  br label %f

f:
  ret void
}

!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!3, !4}
!llvm.module.flags = !{!5}

!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "a.ll", directory: "/")
!2 = !{}
!3 = !{i32 9}
!4 = !{i32 0}
!5 = !{i32 2, !"Debug Info Version", i32 3}
!7 = !DISubroutineType(types: !2)
!17 = distinct !DISubprogram(name: "f", scope: null, file: !1, line: 1, type: !7, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2, keyInstructions: true)
!18 = !DILocation(line: 10, column: 10, scope: !17)
!19 = !DILocation(line: 10, column: 10, scope: !17, atomGroup: 1, atomRank: 2)
!20 = !DILocation(line: 10, column: 10, scope: !17, atomGroup: 2, atomRank: 2)
!21 = !DILocation(line: 10, column: 10, scope: !17, atomGroup: 2, atomRank: 1)
;.
; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C, file: [[META1:![0-9]+]], producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: [[META2:![0-9]+]])
; CHECK: [[META1]] = !DIFile(filename: "a.ll", directory: {{.*}})
; CHECK: [[META2]] = !{}
; CHECK: [[DBG6]] = distinct !DISubprogram(name: "f", scope: null, file: [[META1]], line: 1, type: [[META7:![0-9]+]], scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: [[META0]], retainedNodes: [[META2]], keyInstructions: true)
; CHECK: [[META7]] = !DISubroutineType(types: [[META2]])
; CHECK: [[DBG8]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 5, atomRank: 2)
; CHECK: [[DBG9]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 6, atomRank: 2)
; CHECK: [[DBG10]] = !DILocation(line: 10, column: 10, scope: [[DBG6]])
; CHECK: [[DBG11]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 6, atomRank: 1)
; CHECK: [[DBG12]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 3, atomRank: 2)
; CHECK: [[DBG13]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 4, atomRank: 2)
; CHECK: [[DBG14]] = !DILocation(line: 10, column: 10, scope: [[DBG6]], atomGroup: 4, atomRank: 1)
;.