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fe367e8013
The main change here is in IRGen which needs to be able to emit constant enum values. Use `emitValueInjection` to create the enum constant. Usually this method creates code in the current function. But if all arguments to the enum are constant, the builder never has to emit an instruction. Instead it can constant fold everything and just returns the final constant. Also, create statically initialized let-globals as constant global (`constant` instead of `global`).
136 lines
3.5 KiB
Swift
136 lines
3.5 KiB
Swift
// RUN: %target-swift-frontend -O -emit-ir %s | %FileCheck %s
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// RUN: %target-swift-frontend -Osize -emit-ir %s | %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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// REQUIRES: CPU=arm64 || CPU=x86_64
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// REQUIRES: swift_in_compiler
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// This is an end-to-end test to ensure that the optimizer generates
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// optimal code for static String variables.
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public struct S {
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// CHECK: {{^@"}}[[SMALL:.*smallstr.*pZ]]" ={{.*}} constant {{.*}} inttoptr
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public static let smallstr = "abc123a"
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// CHECK: {{^@"}}[[LARGE:.*largestr.*pZ]]" ={{.*}} constant {{.*}} inttoptr {{.*}} add
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public static let largestr = "abc123asd3sdj3basfasdf"
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// CHECK: {{^@"}}[[UNICODE:.*unicodestr.*pZ]]" ={{.*}} constant {{.*}} inttoptr {{.*}} add
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public static let unicodestr = "❄️gastroperiodyni"
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// CHECK: {{^@"}}[[EMPTY:.*emptystr.*pZ]]" ={{.*}} constant {{.*}} inttoptr
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public static let emptystr = ""
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}
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// unsafeMutableAddressor for S.smallstr
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// CHECK: define {{.*smallstr.*}}u"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}} @"[[SMALL]]"
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// CHECK-NEXT: }
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// getter for S.smallstr
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// CHECK: define {{.*smallstr.*}}gZ"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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// unsafeMutableAddressor for S.largestr
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// CHECK: define {{.*largestr.*}}u"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}} @"[[LARGE]]"
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// CHECK-NEXT: }
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// getter for S.largestr
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// CHECK: define {{.*largestr.*}}gZ"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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// unsafeMutableAddressor for S.unicodestr
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// CHECK: define {{.*unicodestr.*}}u"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}} @"[[UNICODE]]"
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// CHECK-NEXT: }
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// getter for S.unicodestr
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// CHECK: define {{.*unicodestr.*}}gZ"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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// unsafeMutableAddressor for S.emptystr
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// CHECK: define {{.*emptystr.*}}u"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}} @"[[EMPTY]]"
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// CHECK-NEXT: }
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// getter for S.emptystr
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// CHECK: define {{.*emptystr.*}}gZ"
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// CHECK-NEXT: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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// CHECK-LABEL: define {{.*}}get_smallstr
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// CHECK: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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@inline(never)
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public func get_smallstr() -> String {
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return S.smallstr
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}
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// CHECK-LABEL: define {{.*}}get_largestr
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// CHECK: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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@inline(never)
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public func get_largestr() -> String {
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return S.largestr
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}
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// CHECK-LABEL: define {{.*}}get_unicodestr
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// CHECK: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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@inline(never)
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public func get_unicodestr() -> String {
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return S.unicodestr
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}
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// CHECK-LABEL: define {{.*}}get_emptystr
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// CHECK: entry:
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// CHECK-NEXT: ret {{.*}}
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// CHECK-NEXT: }
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@inline(never)
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public func get_emptystr() -> String {
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return S.emptystr
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}
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// Also check if the generated code is correct.
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// CHECK-OUTPUT: abc123a
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// CHECK-OUTPUT: abc123asd3sdj3basfasdf
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// CHECK-OUTPUT: ❄️gastroperiodyni
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// CHECK-OUTPUT: <>
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print(get_smallstr())
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print(get_largestr())
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print(get_unicodestr())
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print("<\(get_emptystr())>")
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// Really load the globals from their addresses.
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@_optimize(none)
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func print_strings_from_addressors() {
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print(S.smallstr)
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print(S.largestr)
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print(S.unicodestr)
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print("<\(S.emptystr)>")
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}
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// CHECK-OUTPUT: abc123a
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// CHECK-OUTPUT: abc123asd3sdj3basfasdf
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// CHECK-OUTPUT: ❄️gastroperiodyni
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// CHECK-OUTPUT: <>
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print_strings_from_addressors()
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