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Sometimes stack promotion can catch cases only at a late stage of the pipeline, after FunctionSignatureOpts. https://bugs.swift.org/browse/SR-12773 rdar://problem/63068408
35 lines
888 B
Swift
35 lines
888 B
Swift
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// RUN: %target-swift-frontend %s -parse-as-library -enable-spec-devirt -O -emit-sil | %FileCheck %s
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// RUN: %target-swift-frontend %s -parse-as-library -Osize -emit-sil
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//
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// Test speculative devirtualization.
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public class Cat {
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var cats: Int
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required init(cats: Int) {
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self.cats = cats
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}
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}
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public class BigCat : Cat {
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required init(cats: Int) {
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super.init(cats: cats)
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}
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}
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public func make(type: Cat.Type, cats: Int) {
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type.init(cats: cats)
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}
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// CHECK-LABEL: sil @$s23devirt_speculative_init4make4type4catsyAA3CatCm_SitF : $@convention(thin) (@thick Cat.Type, Int) -> ()
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// CHECK: checked_cast_br [exact] %0 : $@thick Cat.Type to @thick Cat.Type, bb2, bb3
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// CHECK: bb1:
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// CHECK: return
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// CHECK: bb2({{%.*}} : $@thick Cat.Type):
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// CHECK: alloc_ref [stack] $Cat
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// CHECK: br bb1
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// CHECK: bb3:
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// CHECK: alloc_ref [stack] $BigCat
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// CHECK: br bb1
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