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TheRock/compiler/amd-llvm/llvm/test/DebugInfo/KeyInstructions/Generic/jump-threading-basic.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

80 lines
2.7 KiB
LLVM

; RUN: opt %s --passes=jump-threading -S -o - -S | FileCheck %s
;; +-> T1 -+
;; | v +-> T2.
;; Entry -+ Merge -+
;; | ^ +-> F2.
;; +-> F1 -+
;;
;; Thread T1 -> T2 and F1 -> F2 through Merge.
;;
;; +-> T1 (+ Merge + T2).
;; |
;; Entry -+
;; |
;; +-> F1 (+ Merge + F2).
;;
;; Check the duplicated instructions atoms are remapped.
; CHECK: T2:
; CHECK-NEXT: %v1 = call i32 @f1()
; CHECK-NEXT: %C3 = add i32 %v1, 1, !dbg [[G2R2:!.*]]
; CHECK-NEXT: store i32 %C3, ptr %p, align 4, !dbg [[G2R1:!.*]]
; CHECK: F2:
; CHECK-NEXT: %v2 = call i32 @f2()
; CHECK-NEXT: %C = add i32 %v2, 1, !dbg [[G1R2:!.*]]
; CHECK-NEXT: store i32 %C, ptr %p, align 4, !dbg [[G1R1:!.*]]
; CHECK: distinct !DISubprogram(name: "test1", {{.*}}keyInstructions: true)
; CHECK: [[G2R2]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 2)
; CHECK: [[G2R1]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 1)
; CHECK: [[G1R2]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 2)
; CHECK: [[G1R1]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 1)
define i32 @test1(i1 %cond, ptr %p) !dbg !5 {
br i1 %cond, label %T1, label %F1
T1: ; preds = %0
%v1 = call i32 @f1()
br label %Merge
F1: ; preds = %0
%v2 = call i32 @f2()
br label %Merge
Merge: ; preds = %F1, %T1
%A = phi i1 [ true, %T1 ], [ false, %F1 ]
%B = phi i32 [ %v1, %T1 ], [ %v2, %F1 ]
%C = add i32 %B, 1, !dbg !8
store i32 %C, ptr %p, align 4, !dbg !9
br i1 %A, label %T2, label %F2
T2: ; preds = %Merge
call void @f3()
ret i32 %B
F2: ; preds = %Merge
ret i32 %B
}
declare i32 @f1()
declare i32 @f2()
declare void @f3()
!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: "test.ll", directory: "/")
!2 = !{i32 12}
!3 = !{i32 0}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
!6 = !DISubroutineType(types: !7)
!7 = !{}
!8 = !DILocation(line: 8, column: 1, scope: !5, atomGroup: 1, atomRank: 2)
!9 = !DILocation(line: 8, column: 1, scope: !5, atomGroup: 1, atomRank: 1)