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; RUN: opt -S -passes=jump-threading,verify %s | FileCheck %s
;; Modified from llvm/test/Transforms/JumpThreading/thread-two-bbs.ll
;;
;; JumpThreading duplicates bb.cond2 to thread through bb.file to bb.file,
;; bb.f2 or exit.
;;
;; Check the duplicated instructions get remapped atom groups.
; CHECK: bb.cond2:
; CHECK-NEXT: call void @f1()
; CHECK-NEXT: %tobool1 = icmp eq i32 %cond2, 0, !dbg [[G1R2:!.*]]
; CHECK-NEXT: br i1 %tobool1, label %bb.file, label %exit, !dbg [[G1R1:!.*]]
; CHECK: bb.cond2.thread:
; CHECK-NEXT: %tobool12 = icmp eq i32 %cond2, 0, !dbg [[G3R2:!.*]]
; CHECK-NEXT: br i1 %tobool12, label %bb.f2, label %exit, !dbg [[G3R1:!.*]]
;; After the transform %ptr is null through bb.cond2 and @a through
;; bb.cond2.thread. Thread bb.cond2.thread->bb.f2 through bb.file.
;; Check the duplicated store gets a remapped atom group too.
; CHECK: bb.file:
; CHECK-NEXT: %ptr3 = phi ptr [ null, %bb.cond2 ]
; CHECK-NEXT: store ptr %ptr3, ptr %p, align 4, !dbg [[G2R1:!.*]]
; CHECK: bb.f2:
; CHECK-NEXT: store ptr @a, ptr %p, align 4, !dbg [[G4R1:!.*]]
; CHECK: distinct !DISubprogram(name: "foo", {{.*}}keyInstructions: true)
; CHECK: [[G1R2]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 2)
; CHECK: [[G1R1]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 1)
; CHECK: [[G3R2]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 3, atomRank: 2)
; CHECK: [[G3R1]] = !DILocation(line: 1, column: 1, scope: ![[#]], atomGroup: 3, atomRank: 1)
; CHECK: [[G2R1]] = !DILocation(line: 2, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 1)
; CHECK: [[G4R1]] = !DILocation(line: 2, column: 1, scope: ![[#]], atomGroup: 4, atomRank: 1)
@a = global i32 0, align 4
define void @foo(i32 %cond1, i32 %cond2, ptr %p) !dbg !5 {
entry:
%tobool = icmp eq i32 %cond1, 0
br i1 %tobool, label %bb.cond2, label %bb.f1
bb.f1: ; preds = %entry
call void @f1()
br label %bb.cond2
bb.cond2: ; preds = %bb.f1, %entry
%ptr = phi ptr [ null, %bb.f1 ], [ @a, %entry ]
%tobool1 = icmp eq i32 %cond2, 0, !dbg !9
br i1 %tobool1, label %bb.file, label %exit, !dbg !10
bb.file: ; preds = %bb.cond2
store ptr %ptr, ptr %p, align 4, !dbg !11
%cmp = icmp eq ptr %ptr, null
br i1 %cmp, label %exit, label %bb.f2
bb.f2: ; preds = %bb.file
call void @f2()
br label %exit
exit: ; preds = %bb.f2, %bb.file, %bb.cond2
ret void
}
declare void @f1()
declare void @f2()
!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!2, !3}
!llvm.module.flags = !{!4}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
!1 = !DIFile(filename: "<stdin>", directory: "/")
!2 = !{i32 16}
!3 = !{i32 0}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
!6 = !DISubroutineType(types: !7)
!7 = !{}
!9 = !DILocation(line: 1, column: 1, scope: !5, atomGroup: 1, atomRank: 2)
!10 = !DILocation(line: 1, column: 1, scope: !5, atomGroup: 1, atomRank: 1)
!11 = !DILocation(line: 2, column: 1, scope: !5, atomGroup: 2, atomRank: 1)
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