217 lines
5.9 KiB
LLVM
217 lines
5.9 KiB
LLVM
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; RUN: opt -hotcoldsplit -hotcoldsplit-threshold=2 -S < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.14.0"
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; Check that these functions are not split. Outlined functions are called from a
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; basic block named codeRepl.
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; The cold region is too small to split.
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; CHECK-LABEL: @foo
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; CHECK-NOT: foo.cold.1
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define void @foo() {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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unreachable
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if.end: ; preds = %entry
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ret void
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}
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; The cold region is still too small to split.
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; CHECK-LABEL: @bar
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; CHECK-NOT: bar.cold.1
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define void @bar() {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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ret void
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if.end: ; preds = %entry
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ret void
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}
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; Make sure we don't try to outline the entire function.
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; CHECK-LABEL: @fun
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; CHECK-NOT: fun.cold.1
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define void @fun() {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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br label %if.end
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if.end: ; preds = %entry
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ret void
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}
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; Make sure we don't try to outline the entire function, especially when the
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; entry block is cold.
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; CHECK: define void @cold_entry_block() [[COLD_ATTR:#[0-9]+]]
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; CHECK-NOT: cold_entry_block.cold.1
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define void @cold_entry_block() {
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entry:
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call void @sink()
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ret void
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}
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; Do not split `noinline` functions.
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; CHECK-LABEL: @noinline_func
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; CHECK-NOT: noinline_func.cold.1
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define void @noinline_func() noinline {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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br label %if.end
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if.end: ; preds = %entry
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ret void
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}
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; Do not split `alwaysinline` functions.
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; CHECK-LABEL: @alwaysinline_func
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; CHECK-NOT: alwaysinline_func.cold.1
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define void @alwaysinline_func() alwaysinline {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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br label %if.end
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if.end: ; preds = %entry
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ret void
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}
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; Don't outline infinite loops.
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; CHECK-LABEL: @infinite_loop
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; CHECK-NOT: infinite_loop.cold.1
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define void @infinite_loop() {
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entry:
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br label %loop
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loop:
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call void @sink()
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br label %loop
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}
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; Don't count debug intrinsics towards the outlining threshold.
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; CHECK-LABEL: @dont_count_debug_intrinsics
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; CHECK-NOT: dont_count_debug_intrinsics.cold.1
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define void @dont_count_debug_intrinsics(i32 %arg1) !dbg !6 {
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entry:
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%var = add i32 0, 0, !dbg !11
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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ret void
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if.end: ; preds = %entry
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call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11
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call void @llvm.dbg.value(metadata i32 %arg1, metadata !9, metadata !DIExpression()), !dbg !11
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call void @sink()
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ret void
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}
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; CHECK-LABEL: @sanitize_address
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; CHECK-NOT: sanitize_address.cold.1
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define void @sanitize_address() sanitize_address {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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ret void
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if.end: ; preds = %entry
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ret void
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}
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; CHECK-LABEL: @sanitize_hwaddress
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; CHECK-NOT: sanitize_hwaddress.cold.1
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define void @sanitize_hwaddress() sanitize_hwaddress {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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ret void
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if.end: ; preds = %entry
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ret void
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}
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; CHECK-LABEL: @sanitize_thread
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; CHECK-NOT: sanitize_thread.cold.1
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define void @sanitize_thread() sanitize_thread {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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ret void
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if.end: ; preds = %entry
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ret void
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}
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; CHECK-LABEL: @sanitize_memory
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; CHECK-NOT: sanitize_memory.cold.1
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define void @sanitize_memory() sanitize_memory {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @sink()
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ret void
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if.end: ; preds = %entry
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ret void
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}
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declare void @llvm.trap() cold noreturn
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; CHECK-LABEL: @nosanitize_call
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; CHECK-NOT: nosanitize_call.cold.1
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define void @nosanitize_call() sanitize_memory {
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entry:
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @llvm.trap(), !nosanitize !2
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unreachable
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if.end: ; preds = %entry
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ret void
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}
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; CHECK: attributes [[COLD_ATTR]] = { {{.*}}cold
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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declare void @sink() cold
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!3, !4}
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!llvm.module.flags = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/")
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!2 = !{}
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!3 = !{i32 7}
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!4 = !{i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!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)
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!7 = !DISubroutineType(types: !2)
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!8 = !{!9}
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!9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
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!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
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!11 = !DILocation(line: 1, column: 1, scope: !6)
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