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1; RUN: opt -passes='loop(simple-loop-unswitch)' -S < %s | FileCheck %s2; RUN: opt -passes='loop-mssa(simple-loop-unswitch)' -S < %s | FileCheck %s3 4; Check that SimpleLoopUnswitch's unswitchTrivialBranch() and unswitchTrivialSwitch()5; propagates debug locations to the new terminators replacing the old ones.6 7define i32 @test1(ptr %var, i1 %cond1, i1 %cond2) !dbg !5 {8; CHECK-LABEL: define i32 @test1(9; CHECK: loop_begin:10; CHECK-NEXT: br label %[[CONTINUE:.*]], !dbg [[DBG8:![0-9]+]]11;12entry:13 br label %loop_begin, !dbg !814 15loop_begin: ; preds = %do_something, %entry16 br i1 %cond1, label %continue, label %loop_exit, !dbg !917 18continue: ; preds = %loop_begin19 %var_val = load i32, ptr %var, align 4, !dbg !1020 br i1 %cond2, label %do_something, label %loop_exit, !dbg !1121 22do_something: ; preds = %continue23 call void @some_func(), !dbg !1224 br label %loop_begin, !dbg !1325 26loop_exit: ; preds = %continue, %loop_begin27 ret i32 0, !dbg !1428}29 30define i32 @test7(i32 %cond1, i32 %x, i32 %y) !dbg !15 {31; CHECK-LABEL: define i32 @test7(32; CHECK-SAME: i32 [[COND1:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]])33; CHECK-NEXT: entry:34; CHECK-NEXT: switch i32 [[COND1]], label %[[ENTRY_SPLIT:.*]] [35; CHECK-NEXT: i32 0, label %[[LOOP_EXIT:.*]]36; CHECK-NEXT: i32 1, label %[[LOOP_EXIT]]37; CHECK-NEXT: ], !dbg [[DBG16:![0-9]+]]38; CHECK: loop_begin:39; CHECK-NEXT: br label %[[LATCH:.*]], !dbg [[DBG16]]40;41entry:42 br label %loop_begin, !dbg !1643 44loop_begin: ; preds = %latch, %entry45 switch i32 %cond1, label %latch [46 i32 0, label %loop_exit47 i32 1, label %loop_exit48 ], !dbg !1749 50latch: ; preds = %loop_begin51 call void @some_func(), !dbg !1852 br label %loop_begin, !dbg !1953 54loop_exit: ; preds = %loop_begin, %loop_begin55 %result1 = phi i32 [ %x, %loop_begin ], [ %x, %loop_begin ], !dbg !2056 %result2 = phi i32 [ %y, %loop_begin ], [ %y, %loop_begin ], !dbg !2157 %result = add i32 %result1, %result2, !dbg !2258 ret i32 %result, !dbg !2359}60 61; Function Attrs: noreturn62declare void @some_func()63 64!llvm.dbg.cu = !{!0}65!llvm.debugify = !{!2, !3}66!llvm.module.flags = !{!4}67 68; CHECK: [[DBG8]] = !DILocation(line: 2,69 70; CHECK: [[DBG16]] = !DILocation(line: 9,71 72!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)73!1 = !DIFile(filename: "test2.ll", directory: "/")74!2 = !{i32 15}75!3 = !{i32 0}76!4 = !{i32 2, !"Debug Info Version", i32 3}77!5 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)78!6 = !DISubroutineType(types: !7)79!7 = !{}80!8 = !DILocation(line: 1, column: 1, scope: !5)81!9 = !DILocation(line: 2, column: 1, scope: !5)82!10 = !DILocation(line: 3, column: 1, scope: !5)83!11 = !DILocation(line: 4, column: 1, scope: !5)84!12 = !DILocation(line: 5, column: 1, scope: !5)85!13 = !DILocation(line: 6, column: 1, scope: !5)86!14 = !DILocation(line: 7, column: 1, scope: !5)87!15 = distinct !DISubprogram(name: "test7", linkageName: "test7", scope: null, file: !1, line: 8, type: !6, scopeLine: 8, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)88!16 = !DILocation(line: 8, column: 1, scope: !15)89!17 = !DILocation(line: 9, column: 1, scope: !15)90!18 = !DILocation(line: 10, column: 1, scope: !15)91!19 = !DILocation(line: 11, column: 1, scope: !15)92!20 = !DILocation(line: 12, column: 1, scope: !15)93!21 = !DILocation(line: 13, column: 1, scope: !15)94!22 = !DILocation(line: 14, column: 1, scope: !15)95!23 = !DILocation(line: 15, column: 1, scope: !15)96