; REQUIRES: x86-registered-target
; RUN: llc < %s | FileCheck %s
; Repro for issue https://reviews.llvm.org/D149367#4619121
; Validates that `indirect ptr null` and a jump table can be used in the same function.
; Verify branch labels match what's in the CodeView
; CHECK: .Ltmp2:
; CHECK-NEXT: jmpq *%{{.*}}
; Verify jump table have the same entry size, base offset and shift as what's in the CodeView
; CHECK: {{\.?}}LJTI0_0:
; CHECK-NEXT: .long .LBB0_[[#]]-.LJTI0_0
; Verify CodeView
; CHECK: .short 4441 # Record kind: S_ARMSWITCHTABLE
; CHECK-NEXT: .secrel32 .LJTI0_0 # Base offset
; CHECK-NEXT: .secidx .LJTI0_0 # Base section index
; CHECK-NEXT: .short 4 # Switch type
; CHECK-NEXT: .secrel32 .Ltmp2 # Branch offset
; CHECK-NEXT: .secrel32 .LJTI0_0 # Table offset
; CHECK-NEXT: .secidx .Ltmp2 # Branch section index
; CHECK-NEXT: .secidx .LJTI0_0 # Table section index
; CHECK-NEXT: .long 4 # Entries count
; CHECK-NOT: .short 4441 # Record kind: S_ARMSWITCHTABLE
target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc19.34.0"
define i32 @f() !dbg !5 {
entry:
indirectbr ptr null, [label %BC_SUCCEED], !dbg !11
BC_SUCCEED: ; preds = %entry
%0 = lshr i64 0, 0
switch i64 %0, label %sw.default.i.i2445 [
i64 3, label %sw.bb15.i.i
i64 1, label %sw.bb7.i.i
i64 2, label %sw.bb11.i.i2444
i64 0, label %sw.bb3.i.i
]
sw.bb3.i.i: ; preds = %BC_SUCCEED
ret i32 0
sw.bb7.i.i: ; preds = %BC_SUCCEED
ret i32 0
sw.bb11.i.i2444: ; preds = %BC_SUCCEED
ret i32 0
sw.bb15.i.i: ; preds = %BC_SUCCEED
ret i32 0
sw.default.i.i2445: ; preds = %BC_SUCCEED
ret i32 0
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "../../v8/src/regexp\\regexp-interpreter.cc", directory: ".", checksumkind: CSK_MD5, checksum: "ddba353f72137fb1d64b5fc8ee071a9c")
!2 = !{}
!3 = !{i32 2, !"CodeView", i32 1}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "f", linkageName: "f", scope: !7, file: !6, line: 386, type: !10, scopeLine: 391, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, templateParams: !2, retainedNodes: !2)
!6 = !DIFile(filename: "../../v8/src/regexp/regexp-interpreter.cc", directory: ".", checksumkind: CSK_MD5, checksum: "ddba353f72137fb1d64b5fc8ee071a9c")
!7 = !DINamespace(scope: !8)
!8 = !DINamespace(name: "internal", scope: !9)
!9 = !DINamespace(name: "v8", scope: null)
!10 = distinct !DISubroutineType(types: !2)
!11 = !DILocation(line: 1, scope: !5)
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