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1dc713e2f7
"reborrow" flag on the SILArgument avoids transitive walk over the phi operandsi to determine if it is a reborrow in multiple utilities. SIL transforms must keep the flag up-to-date by calling SILArgument::setReborrow. SILVerifier checks to ensure the flag is not invalidated. Currently "escaping" is not used anywhere.
21 lines
697 B
Plaintext
21 lines
697 B
Plaintext
// RUN: %target-sil-opt %s | %target-sil-opt | %FileCheck %s
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sil_stage canonical
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import Builtin
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// CHECK-LABEL: sil [ossa] @borrow_argument_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
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// CHECK: bb1([[PHIBBARG:%.*]] : @reborrow @guaranteed $Builtin.NativeObject):
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// CHECK: end_borrow [[PHIBBARG]] : $Builtin.NativeObject
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sil [ossa] @borrow_argument_test : $@convention(thin) (@guaranteed Builtin.NativeObject) -> () {
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bb0(%0 : @guaranteed $Builtin.NativeObject):
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%1 = begin_borrow %0 : $Builtin.NativeObject
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br bb1(%1 : $Builtin.NativeObject)
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bb1(%2 : @guaranteed $Builtin.NativeObject):
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end_borrow %2 : $Builtin.NativeObject
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%4 = tuple()
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return %4 : $()
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}
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