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5285bf7200
Turn off speculative devirtualization by default. Add a flag to support enabling the pass. Fixes rdar://58778959 and rdar://58429282
38 lines
875 B
Swift
38 lines
875 B
Swift
// RUN: %target-swift-frontend -parse-as-library -enable-spec-devirt -O -emit-sil %s | %FileCheck %s
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// REQUIRES: swift_stdlib_no_asserts,optimized_stdlib,CPU=x86_64
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// Test inline cache with a global class. Make sure the retain|release pair
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// for the fast path is removed in the loop.
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open class A
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{
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open func f(_ a: Int) -> Int
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{
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return a + 1
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}
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}
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var x = 0
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public var a = A()
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public func testit() {
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// CHECK-LABEL: sil @{{.*}}testityyF
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// CHECK: bb0:
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// CHECK-NOT: {{.*(retain|release).*}}
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// CHECK: bb1{{.*}}:
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// CHECK-NOT: {{.*(retain|release).*}}
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// CHECK: return
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// CHECK: bb2{{.*}}:
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// CHECK-NOT: {{.*(retain|release|apply).*}}
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// CHECK: br bb1
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// CHECK: bb3{{.*}}:
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// CHECK-NEXT: class_method
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// CHECK-NEXT: strong_retain
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// CHECK-NEXT: apply
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// CHECK-NEXT: strong_release
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// CHECK-NEXT: br bb1
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x = a.f(x)
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}
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