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