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2b9b2d243c
* re-implement the pass in swift * support alloc_stack liveranges which span over multiple basic blocks * support `load`-`store` pairs, copying from the alloc_stack (in addition to `copy_addr`) Those improvements help to reduce temporary stack allocations, especially for InlineArrays. rdar://151606382
51 lines
2.3 KiB
Swift
51 lines
2.3 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %s \
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// RUN: -Xllvm -sil-print-types -emit-sil -module-name=Lib -package-name Pkg \
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// RUN: -package-cmo -allow-non-resilient-access \
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// RUN: -O -wmo -enable-library-evolution \
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// RUN: -Xllvm -sil-print-types -Xllvm -sil-print-function=s3Lib3fooyS2iF 2>&1 | %FileCheck %s
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/// TEST that accessing PkgStruct in the following functions gets inlined after perf inlining pass.
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public func bar(_ arg: Int) -> Int {
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let p = PkgStruct(1, 2)
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return arg > 0 ? p.field1 : p.field2
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}
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package func foo(_ arg: Int) -> Int {
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let p = PkgStruct(1, 2)
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return arg > 0 ? p.field1 : p.field2
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}
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package struct PkgStruct {
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package let field1: Int
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package let field2: Int
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package init(_ arg1: Int, _ arg2: Int) {
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field1 = arg1
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field2 = arg2
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}
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}
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/// BEFORE perf inlining pass.
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// CHECK: sil package [ossa] @$s3Lib3fooyS2iF : $@convention(thin) (Int) -> Int {
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// CHECK: [[PKG_STACK:%.*]] = alloc_stack $PkgStruct
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// CHECK: [[FUNC_REF:%.*]] = function_ref @$s3Lib9PkgStructVyACSi_SitcfC : $@convention(method) (Int, Int, @thin PkgStruct.Type) -> @out PkgStruct
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// CHECK: apply [[FUNC_REF]]
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// CHECK: [[F1:%.*]] = struct_element_addr [[PKG_STACK]] : $*PkgStruct, #PkgStruct.field1
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// CHECK: load [trivial] [[F1]] : $*Int
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// CHECK: [[F2:%.*]] = struct_element_addr [[PKG_STACK]] : $*PkgStruct, #PkgStruct.field2
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// CHECK: load [trivial] [[F2]] : $*Int
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/// AFTER perf inlining pass; body of `@$s3Lib9PkgStructVyACSi_SitcfC` gets inlined.
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// CHECK: *** SIL function after {{.*}} EarlyPerfInliner (early-inline)
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// CHECK: sil package [ossa] @$s3Lib3fooyS2iF : $@convention(thin) (Int) -> Int {
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// CHECK: [[PKG_ALLOC:%.*]] = alloc_stack $PkgStruct
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// CHECK: [[FIELD1_IVAR:%.*]] = struct_element_addr [[PKG_ALLOC]] : $*PkgStruct, #PkgStruct.field1
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// CHECK: store {{.*}} to [trivial] [[FIELD1_IVAR]] : $*Int
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// CHECK: [[FIELD2_IVAR:%.*]] = struct_element_addr [[PKG_ALLOC]] : $*PkgStruct, #PkgStruct.field2
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// CHECK: store {{.*}} to [trivial] [[FIELD2_IVAR]] : $*Int
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// CHECK: [[FIELD1:%.*]] = struct_element_addr [[PKG_ALLOC]] : $*PkgStruct, #PkgStruct.field1
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// CHECK: load [trivial] [[FIELD1]] : $*Int
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// CHECK: [[FIELD2:%.*]] = struct_element_addr [[PKG_ALLOC]] : $*PkgStruct, #PkgStruct.field2
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// CHECK: load [trivial] [[FIELD2]] : $*Int
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