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; RUN: opt -hotcoldsplit -S < %s | FileCheck %s
; RUN: opt -passes=hotcoldsplit -S < %s | FileCheck %s
; Check that these functions are not split. Outlined functions are called from a
; basic block named codeRepl.
; The cold region is too small to split.
; CHECK-LABEL: @foo
; CHECK-NOT: foo.cold.1
define void @foo() {
entry:
br i1 undef, label %if.then, label %if.end
if.then: ; preds = %entry
unreachable
if.end: ; preds = %entry
ret void
}
; The cold region is still too small to split.
; CHECK-LABEL: @bar
; CHECK-NOT: bar.cold.1
define void @bar() {
entry:
br i1 undef, label %if.then, label %if.end
if.then: ; preds = %entry
call void @sink()
call void @sink()
ret void
if.end: ; preds = %entry
ret void
}
; Make sure we don't try to outline the entire function.
; CHECK-LABEL: @fun
; CHECK-NOT: fun.cold.1
define void @fun() {
entry:
br i1 undef, label %if.then, label %if.end
if.then: ; preds = %entry
br label %if.end
if.end: ; preds = %entry
ret void
}
; Don't outline infinite loops.
; CHECK-LABEL: @infinite_loop
; CHECK-NOT: infinite_loop.cold.1
define void @infinite_loop() {
entry:
br label %loop
loop:
call void @sink()
call void @sink()
call void @sink()
br label %loop
}
; Don't count debug intrinsics towards the outlining threshold.
; CHECK-LABEL: @dont_count_debug_intrinsics
; CHECK-NOT: dont_count_debug_intrinsics.cold.1
define void @dont_count_debug_intrinsics(i32 %arg1) !dbg !6 {
entry:
%var = add i32 0, 0, !dbg !11
br i1 undef, label %if.then, label %if.end
if.then: ; preds = %entry
ret void
if.end: ; preds = %entry
call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11
call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11
call void @sink()
ret void
}
declare void @llvm.dbg.value(metadata, metadata, metadata)
declare void @sink() cold
!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!3, !4}
!llvm.module.flags = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "<stdin>", directory: "/")
!2 = !{}
!3 = !{i32 7}
!4 = !{i32 1}
!5 = !{i32 2, !"Debug Info Version", i32 3}
!6 = distinct !DISubprogram(name: "dont_count_debug_intrinsics", linkageName: "dont_count_debug_intrinsics", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8)
!7 = !DISubroutineType(types: !2)
!8 = !{!9}
!9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
!11 = !DILocation(line: 1, column: 1, scope: !6)
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