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88a74a288c
Optimize code like:
puts("\(String.self)")
Optimizing string interpolation and optimizing C-strings are both done in StringOptimization.
A second run of the StringOptimization is needed in the pipeline to optimize such code, because the result of the interpolation-optimization must be cleaned up so that the C-String optimization can kick in.
Also, StringOptimization must handle struct_extract(struct(literal)), where the struct_extract may be in a called function.
To solve a phase ordering problem with inlining String semantics and inlining the `String(stringInterpolation: DefaultStringInterpolation)` constructor, we do a simple analysis of the callee. Doing this simple "interprocedural" analysis avoids relying on inlining that String constructor.
rdar://74941849
57 lines
1.8 KiB
Swift
57 lines
1.8 KiB
Swift
// RUN: %target-build-swift -O %s -module-name=test -emit-sil | %FileCheck %s
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// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -O -module-name=test %s -o %t/a.out
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// RUN: %target-run %t/a.out | %FileCheck %s -check-prefix=CHECK-OUTPUT
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// REQUIRES: executable_test,swift_stdlib_no_asserts
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#if canImport(Darwin)
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import Darwin
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#elseif canImport(Glibc)
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import Glibc
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#elseif os(Windows)
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import CRT
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#else
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#error("Unsupported platform")
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#endif
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// CHECK-LABEL: sil [noinline] @$s4test0A26StringConstantForCFunctionyyF
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// CHECK-NOT: apply
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// CHECK: [[L:%[0-9]+]] = string_literal utf8 "Hello world!"
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// CHECK-NOT: apply
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// CHECK: [[P:%[0-9]+]] = struct $UnsafePointer<Int8> ([[L]] : $Builtin.RawPointer)
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// CHECK-NOT: apply
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// CHECK: [[O:%[0-9]+]] = enum $Optional<UnsafePointer<Int8>>, #Optional.some!enumelt, [[P]]
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// CHECK-NOT: apply
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// CHECK: [[F:%[0-9]+]] = function_ref @puts
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// CHECK: apply [[F]]([[O]])
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// CHECK: } // end sil function '$s4test0A26StringConstantForCFunctionyyF'
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@inline(never)
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public func testStringConstantForCFunction() {
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puts("Hello " + "world!")
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}
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// CHECK-LABEL: sil [noinline] @$s4test0A17TypeInterpolationyyF
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// CHECK-NOT: apply
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// CHECK: [[L:%[0-9]+]] = string_literal utf8 "String"
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// CHECK-NOT: apply
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// CHECK: [[P:%[0-9]+]] = struct $UnsafePointer<Int8> ([[L]] : $Builtin.RawPointer)
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// CHECK-NOT: apply
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// CHECK: [[O:%[0-9]+]] = enum $Optional<UnsafePointer<Int8>>, #Optional.some!enumelt, [[P]]
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// CHECK-NOT: apply
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// CHECK: [[F:%[0-9]+]] = function_ref @puts
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// CHECK: apply [[F]]([[O]])
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// CHECK: } // end sil function '$s4test0A17TypeInterpolationyyF'
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@inline(never)
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public func testTypeInterpolation() {
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puts("\(String.self)")
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}
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// CHECK-OUTPUT: Hello world!
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testStringConstantForCFunction()
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// CHECK-OUTPUT: String
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testTypeInterpolation()
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