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When enabling the option `-sil-opt-profile-repeat=<n>`, the optimizer runs passes n times and reports the total runtime at the end of the pass pipeline. This is useful to profile a specific optimization pass with `sil-opt`. For example, to profile the stack promotion pass: ``` sil-opt -stack-promotion -sil-opt-profile-repeat=10000 -o /dev/null test.sil ```
28 lines
509 B
Plaintext
28 lines
509 B
Plaintext
// RUN: %target-sil-opt -stack-promotion -sil-opt-profile-repeat=10 %s -o /dev/null 2>&1 | %FileCheck %s
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// REQUIRES: swift_in_compiler
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// CHECK: {{.*}} ms: total runtime of all passes
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sil_stage canonical
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import Builtin
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import Swift
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import SwiftShims
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class XX {
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@_hasStorage var x: Int32
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init()
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}
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sil @simple_promote : $@convention(thin) () -> Int32 {
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bb0:
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%o1 = alloc_ref $XX
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%l1 = ref_element_addr %o1 : $XX, #XX.x
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%l2 = load %l1 : $*Int32
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strong_release %o1 : $XX
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return %l2 : $Int32
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}
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