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861a5719b8
Fixes <rdar://problem/46486308> test/SILOptimizer/devirt_specialized_conformance.swift fails on Debug+Asssert stdlib bot Note: I haven't yet figured out why debug info changes obvious inlining decisions.
77 lines
2.2 KiB
Swift
77 lines
2.2 KiB
Swift
// RUN: %target-swift-frontend -O -Xllvm -sil-inline-generics=false -Xllvm -sil-disable-pass=ObjectOutliner %s -emit-sil -sil-verify-all | %FileCheck %s
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// Make sure that we completely inline/devirtualize/substitute all the way down
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// to unknown1.
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// CHECK-LABEL: sil @main
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// CHECK: bb0({{.*}}):
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// CHECK: function_ref @unknown1
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// CHECK: apply
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// CHECK: apply
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// CHECK: return
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struct Int32 {}
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@_silgen_name("unknown1")
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func unknown1() -> ()
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protocol P {
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func doSomething(_ x : Int32)
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}
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struct X {}
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class B<T> : P {
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func doSomething(_ x : Int32) {
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unknown1()
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}
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}
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func doSomething(_ p : P, _ x : Int32) {
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p.doSomething(x)
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}
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func doSomething2<T : P>(_ t : T, _ x : Int32) {
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t.doSomething(x)
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}
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func driver() {
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var b2 = B<X>()
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var x = Int32()
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doSomething(b2, x)
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doSomething2(b2, x)
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}
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driver()
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// <rdar://problem/46322928> Failure to devirtualize a protocol method
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// applied to an opened existential blocks implemention of
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// DataProtocol.
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public protocol ContiguousBytes {
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func withUnsafeBytes<R>(_ body: (UnsafeRawBufferPointer) throws -> R) rethrows -> R
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}
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extension Array : ContiguousBytes {}
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extension ContiguousArray : ContiguousBytes {}
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@inline(never)
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func takesPointer(_ p: UnsafeRawBufferPointer) {}
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// In specialized testWithUnsafeBytes<A>(_:), the conditional case and call to withUnsafeBytes must be eliminated.
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// Normally, we expect Array.withUnsafeBytes to be inlined so we would see:
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// [[TAKES_PTR:%.*]] = function_ref @$s30devirt_specialized_conformance12takesPointeryySWF : $@convention(thin) (UnsafeRawBufferPointer) -> ()
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// apply [[TAKES_PTR]](%{{.*}}) : $@convention(thin) (UnsafeRawBufferPointer) -> ()
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// But the inlining isn't consistent across builds with and without debug info.
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//
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// CHECK-LABEL: sil shared [noinline] @$s30devirt_specialized_conformance19testWithUnsafeBytesyyxlFSayypG_Tg5 : $@convention(thin) (@guaranteed Array<Any>) -> () {
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// CHECK: bb0
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// CHECK-NOT: witness_method
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// CHECK-LABEL: } // end sil function '$s30devirt_specialized_conformance19testWithUnsafeBytesyyxlFSayypG_Tg5'
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@inline(never)
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func testWithUnsafeBytes<T>(_ t: T) {
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if let cb = t as? ContiguousBytes {
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cb.withUnsafeBytes { takesPointer($0) }
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}
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}
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testWithUnsafeBytes([])
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