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The intent for `@inline(always)` is to act as an optimization control. The user can rely on inlining to happen or the compiler will emit an error message. Because function values can be dynamic (closures, protocol/class lookup) this guarantee can only be upheld for direct function references. In cases where the optimizer can resolve dynamic function values the attribute shall be respected. rdar://148608854
27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
// RUN: %target-sil-opt -enable-sil-verify-all %s -inline-always-inlining -verify
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import Builtin
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import Swift
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sil [always_inline] @test_circular_foo : $@convention(thin) (Float32) -> Float32 {
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bb0(%0 : $Float32):
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%3 = function_ref @test_circular_bar : $@convention(thin) (Float32) -> Float32
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%5 = apply %3(%0) : $@convention(thin) (Float32) -> Float32 // expected-error {{inlining '@inline(always)' functions forms circular loop}} expected-note 2 {{while inlining here}}
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return %5 : $Float32
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}
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sil [always_inline] @test_circular_bar : $@convention(thin) (Float32) -> Float32 {
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bb0(%0 : $Float32):
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%3 = function_ref @test_circular_baz : $@convention(thin) (Float32) -> Float32
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%5 = apply %3(%0) : $@convention(thin) (Float32) -> Float32 // expected-error {{inlining '@inline(always)' functions forms circular loop}} expected-note 2 {{while inlining here}}
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return %5 : $Float32
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}
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sil [always_inline] @test_circular_baz : $@convention(thin) (Float32) -> Float32 {
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bb0(%0 : $Float32):
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%3 = function_ref @test_circular_foo : $@convention(thin) (Float32) -> Float32
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%5 = apply %3(%0) : $@convention(thin) (Float32) -> Float32 // expected-error {{inlining '@inline(always)' functions forms circular loop}} expected-note 2 {{while inlining here}}
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return %5 : $Float32
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}
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