derek.holloway
7502bf64a4
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103 lines
2.3 KiB
LLVM
103 lines
2.3 KiB
LLVM
; RUN: opt -passes=inline -S < %s | FileCheck %s
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declare ptr @get()
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declare ptr @foo1()
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declare ptr @foo2()
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; Don't need to track inline history for non-mutually recursive calls.
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define internal void @x() noinline {
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ret void
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}
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define internal void @y() {
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call void @x()
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ret void
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}
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define void @z() {
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; CHECK-LABEL: define void @z() {
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; CHECK-NEXT: call void @x(){{$}}
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; CHECK-NEXT: ret void
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call void @y()
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ret void
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}
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; Indirect calls may be devirtualized, they need inline history tracking. In
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; this case, @s is the history, but it gets deleted so the inline history
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; metadata becomes null. This is fine since we cannot infinitely inline through
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; @s anymore as it doesn't exist.
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define internal void @s() {
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%p = call ptr @get()
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call void %p()
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ret void
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}
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define void @t() {
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; CHECK-LABEL: define void @t() {
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; CHECK-NEXT: %p.i = call ptr @get()
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; CHECK-NEXT: call void %p.i(), !inline_history [[HISTORY_T:![0-9]+]]
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; CHECK-NEXT: ret void
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call void @s()
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ret void
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}
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; This will inline @f1 into @a, causing two new calls to @f2, which will get inlined for two calls to @f1.
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; The inline history should stop recursive inlining here.
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define internal void @f1(ptr %p) {
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call void %p(ptr @f1)
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ret void
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}
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define internal void @f2(ptr %p) {
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call void %p(ptr @f2)
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call void %p(ptr @f2)
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ret void
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}
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define void @b() {
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; CHECK-LABEL: define void @b() {
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; CHECK-NEXT: call void @f1(ptr @f2), !inline_history [[HISTORY_B:![0-9]+]]
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; CHECK-NEXT: call void @f1(ptr @f2), !inline_history [[HISTORY_B:![0-9]+]]
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; CHECK-NEXT: ret void
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;
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call void @a()
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ret void
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}
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define internal void @a() {
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call void @f1(ptr @f2)
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ret void
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}
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; Check that the inline history is
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; {callee, processed call's inline_history, just-inlined call's inline_history}
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define void @m(ptr %p) noinline {
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ret void
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}
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define void @n() {
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call void @m(ptr @n2), !inline_history !{ptr @foo1}
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ret void
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}
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define void @n2() {
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call void @m(ptr @n)
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ret void
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}
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define void @o() {
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; CHECK-LABEL: define void @o() {
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; CHECK-NEXT: call void @m(ptr @n2), !inline_history [[HISTORY_O:![0-9]+]]
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; CHECK-NEXT: ret void
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call void @n(), !inline_history !{ptr @foo2}
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ret void
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}
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; CHECK-DAG: [[HISTORY_T]] = distinct !{null}
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; CHECK-DAG: [[HISTORY_B]] = !{ptr @f2, ptr @f1}
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; CHECK-DAG: [[HISTORY_O]] = !{ptr @n, ptr @foo2, ptr @foo1}
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