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c47fe03241
Case #1. Literal zero = natural alignment %1 = integer_literal $Builtin.Int64, 0 %2 = builtin "uncheckedAssertAlignment" (%0 : $Builtin.RawPointer, %1 : $Builtin.Int64) : $Builtin.RawPointer %3 = pointer_to_address %2 : $Builtin.RawPointer to [align=1] $*Int Erases the `pointer_to_address` `[align=]` attribute: Case #2. Literal nonzero = forced alignment. %1 = integer_literal $Builtin.Int64, 16 %2 = builtin "uncheckedAssertAlignment" (%0 : $Builtin.RawPointer, %1 : $Builtin.Int64) : $Builtin.RawPointer %3 = pointer_to_address %2 : $Builtin.RawPointer to [align=1] $*Int Promotes the `pointer_to_address` `[align=]` attribute to a higher value. Case #3. Folded dynamic alignment %1 = builtin "alignof"<T>(%0 : $@thin T.Type) : $Builtin.Word %2 = builtin "uncheckedAssertAlignment" (%0 : $Builtin.RawPointer, %1 : $Builtin.Int64) : $Builtin.RawPointer %3 = pointer_to_address %2 : $Builtin.RawPointer to [align=1] $*T Erases the `pointer_to_address` `[align=]` attribute.
20 lines
704 B
Swift
20 lines
704 B
Swift
// RUN: %target-swift-emit-sil -O -parse-as-library %s | %FileCheck %s
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// Test the absence of a 'strict' flag.
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// Test the absence of an 'align' flag.
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//
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// CHECK-LABEL: $s18unsafe_pointer_gen13test_raw_load2rpSiSV_tF
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// CHECK: pointer_to_address {{%.*}} : $Builtin.RawPointer to $*Int
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public func test_raw_load(rp: UnsafeRawPointer) -> Int {
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return rp.load(as: Int.self)
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}
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// Test the absence of a 'strict' flag.
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// Test the absence of an 'align' flag.
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//
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// CHECK-LABEL: $s18unsafe_pointer_gen20test_mutableraw_load2rpSiSv_tF
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// CHECK: pointer_to_address {{%.*}} : $Builtin.RawPointer to $*Int
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public func test_mutableraw_load(rp: UnsafeMutableRawPointer) -> Int {
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return rp.load(as: Int.self)
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}
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