1; REQUIRES: x86-registered-target 2; RUN: llc < %s | FileCheck %s 3 4; Repro for issue https://reviews.llvm.org/D149367#4619121 5; Validates that `indirect ptr null` and a jump table can be used in the same function. 6 7; Verify branch labels match what's in the CodeView 8; CHECK: .Ltmp2: 9; CHECK-NEXT: jmpq *%{{.*}} 10 11; Verify jump table have the same entry size, base offset and shift as what's in the CodeView 12; CHECK: {{\.?}}LJTI0_0: 13; CHECK-NEXT: .long .LBB0_[[#]]-.LJTI0_0 14 15; Verify CodeView 16; CHECK: .short 4441 # Record kind: S_ARMSWITCHTABLE 17; CHECK-NEXT: .secrel32 .LJTI0_0 # Base offset 18; CHECK-NEXT: .secidx .LJTI0_0 # Base section index 19; CHECK-NEXT: .short 4 # Switch type 20; CHECK-NEXT: .secrel32 .Ltmp2 # Branch offset 21; CHECK-NEXT: .secrel32 .LJTI0_0 # Table offset 22; CHECK-NEXT: .secidx .Ltmp2 # Branch section index 23; CHECK-NEXT: .secidx .LJTI0_0 # Table section index 24; CHECK-NEXT: .long 4 # Entries count 25; CHECK-NOT: .short 4441 # Record kind: S_ARMSWITCHTABLE 26 27target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 28target triple = "x86_64-pc-windows-msvc19.34.0" 29 30define i32 @f() !dbg !5 { 31entry: 32 indirectbr ptr null, [label %BC_SUCCEED], !dbg !11 33 34BC_SUCCEED: ; preds = %entry 35 %0 = lshr i64 0, 0 36 switch i64 %0, label %sw.default.i.i2445 [ 37 i64 3, label %sw.bb15.i.i 38 i64 1, label %sw.bb7.i.i 39 i64 2, label %sw.bb11.i.i2444 40 i64 0, label %sw.bb3.i.i 41 ] 42 43sw.bb3.i.i: ; preds = %BC_SUCCEED 44 ret i32 0 45 46sw.bb7.i.i: ; preds = %BC_SUCCEED 47 ret i32 0 48 49sw.bb11.i.i2444: ; preds = %BC_SUCCEED 50 ret i32 0 51 52sw.bb15.i.i: ; preds = %BC_SUCCEED 53 ret i32 0 54 55sw.default.i.i2445: ; preds = %BC_SUCCEED 56 ret i32 0 57} 58 59!llvm.dbg.cu = !{!0} 60!llvm.module.flags = !{!3, !4} 61 62!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) 63!1 = !DIFile(filename: "../../v8/src/regexp\\regexp-interpreter.cc", directory: ".", checksumkind: CSK_MD5, checksum: "ddba353f72137fb1d64b5fc8ee071a9c") 64!2 = !{} 65!3 = !{i32 2, !"CodeView", i32 1} 66!4 = !{i32 2, !"Debug Info Version", i32 3} 67!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) 68!6 = !DIFile(filename: "../../v8/src/regexp/regexp-interpreter.cc", directory: ".", checksumkind: CSK_MD5, checksum: "ddba353f72137fb1d64b5fc8ee071a9c") 69!7 = !DINamespace(scope: !8) 70!8 = !DINamespace(name: "internal", scope: !9) 71!9 = !DINamespace(name: "v8", scope: null) 72!10 = distinct !DISubroutineType(types: !2) 73!11 = !DILocation(line: 1, scope: !5)