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98b18d2ada
If an inherently cold function is found, mark it as cold. For now this means applying the `cold` and `minsize` attributes. As a drive-by, revisit and clean up the criteria for considering a function for splitting. Add tests. llvm-svn: 351623
32 lines
656 B
LLVM
32 lines
656 B
LLVM
; RUN: opt -hotcoldsplit -hotcoldsplit-threshold=0 -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-LABEL: @fun
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; CHECK: call void @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.else
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if.then:
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ret void
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if.else:
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call void @sink()
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ret void
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}
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; CHECK: define {{.*}} @foo{{.*}}#[[outlined_func_attr:[0-9]+]]
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define void @foo() cold {
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ret void
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}
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declare void @sink() cold
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; CHECK: define {{.*}} @fun.cold.1{{.*}}#[[outlined_func_attr]]
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; CHECK: attributes #[[outlined_func_attr]] = {
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; CHECK-SAME: cold
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; CHECK-SAME: minsize
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