96 lines
3.8 KiB
LLVM
96 lines
3.8 KiB
LLVM
; RUN: opt -passes='loop(simple-loop-unswitch)' -S < %s | FileCheck %s
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; RUN: opt -passes='loop-mssa(simple-loop-unswitch)' -S < %s | FileCheck %s
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; Check that SimpleLoopUnswitch's unswitchTrivialBranch() and unswitchTrivialSwitch()
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; propagates debug locations to the new terminators replacing the old ones.
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define i32 @test1(ptr %var, i1 %cond1, i1 %cond2) !dbg !5 {
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; CHECK-LABEL: define i32 @test1(
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; CHECK: loop_begin:
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; CHECK-NEXT: br label %[[CONTINUE:.*]], !dbg [[DBG8:![0-9]+]]
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;
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entry:
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br label %loop_begin, !dbg !8
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loop_begin: ; preds = %do_something, %entry
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br i1 %cond1, label %continue, label %loop_exit, !dbg !9
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continue: ; preds = %loop_begin
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%var_val = load i32, ptr %var, align 4, !dbg !10
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br i1 %cond2, label %do_something, label %loop_exit, !dbg !11
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do_something: ; preds = %continue
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call void @some_func(), !dbg !12
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br label %loop_begin, !dbg !13
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loop_exit: ; preds = %continue, %loop_begin
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ret i32 0, !dbg !14
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}
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define i32 @test7(i32 %cond1, i32 %x, i32 %y) !dbg !15 {
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; CHECK-LABEL: define i32 @test7(
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; CHECK-SAME: i32 [[COND1:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: switch i32 [[COND1]], label %[[ENTRY_SPLIT:.*]] [
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; CHECK-NEXT: i32 0, label %[[LOOP_EXIT:.*]]
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; CHECK-NEXT: i32 1, label %[[LOOP_EXIT]]
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; CHECK-NEXT: ], !dbg [[DBG16:![0-9]+]]
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; CHECK: loop_begin:
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; CHECK-NEXT: br label %[[LATCH:.*]], !dbg [[DBG16]]
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;
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entry:
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br label %loop_begin, !dbg !16
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loop_begin: ; preds = %latch, %entry
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switch i32 %cond1, label %latch [
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i32 0, label %loop_exit
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i32 1, label %loop_exit
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], !dbg !17
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latch: ; preds = %loop_begin
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call void @some_func(), !dbg !18
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br label %loop_begin, !dbg !19
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loop_exit: ; preds = %loop_begin, %loop_begin
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%result1 = phi i32 [ %x, %loop_begin ], [ %x, %loop_begin ], !dbg !20
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%result2 = phi i32 [ %y, %loop_begin ], [ %y, %loop_begin ], !dbg !21
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%result = add i32 %result1, %result2, !dbg !22
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ret i32 %result, !dbg !23
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}
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; Function Attrs: noreturn
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declare void @some_func()
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!2, !3}
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!llvm.module.flags = !{!4}
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; CHECK: [[DBG8]] = !DILocation(line: 2,
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; CHECK: [[DBG16]] = !DILocation(line: 9,
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "test2.ll", directory: "/")
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!2 = !{i32 15}
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!3 = !{i32 0}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!6 = !DISubroutineType(types: !7)
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!7 = !{}
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!8 = !DILocation(line: 1, column: 1, scope: !5)
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!9 = !DILocation(line: 2, column: 1, scope: !5)
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!10 = !DILocation(line: 3, column: 1, scope: !5)
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!11 = !DILocation(line: 4, column: 1, scope: !5)
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!12 = !DILocation(line: 5, column: 1, scope: !5)
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!13 = !DILocation(line: 6, column: 1, scope: !5)
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!14 = !DILocation(line: 7, column: 1, scope: !5)
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!15 = distinct !DISubprogram(name: "test7", linkageName: "test7", scope: null, file: !1, line: 8, type: !6, scopeLine: 8, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!16 = !DILocation(line: 8, column: 1, scope: !15)
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!17 = !DILocation(line: 9, column: 1, scope: !15)
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!18 = !DILocation(line: 10, column: 1, scope: !15)
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!19 = !DILocation(line: 11, column: 1, scope: !15)
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!20 = !DILocation(line: 12, column: 1, scope: !15)
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!21 = !DILocation(line: 13, column: 1, scope: !15)
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!22 = !DILocation(line: 14, column: 1, scope: !15)
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!23 = !DILocation(line: 15, column: 1, scope: !15)
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