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2fc5cbdc14
This replaces swiftMSVCRT with swiftCRT. The big difference here is that the `visualc` module is no longer imported nor exported. The `visualc` module remains in use for a singular test wrt availability, but this should effectively remove the need for the `visualc` module. The difference between the MSVCRT and ucrt module was not well understood by most. MSVCRT provided ucrt AND visualc, combining pieces of the old MSVCRT and the newer ucrt. The ucrt module is what you really wanted most of the time, however, would need to use MSVCRT for the convenience aliases for type-generic math and the deprecated math constants. Unfortunately, we cannot shadow the `ucrt` module and create a Swift SDK overlay for ucrt as that seems to result in circular dependencies when processing the `_Concurrency` module. Although this makes using the C library easier for most people, it has a more important subtle change: it cleaves the dependency on visualc. This means that this enables use of Swift without Visual Studio for the singular purpose of providing 3 header files. Additionally, it removes the need for the installation of 2 of the 4 support files. This greatly simplifies the deployment process on Windows.
96 lines
2.2 KiB
Swift
96 lines
2.2 KiB
Swift
// RUN: %target-swift-frontend -emit-ir -O %s | %FileCheck %s -check-prefix CHECK -check-prefix CHECK-%target-os
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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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// Make sure we use an intrinsic for functions such as exp.
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// CHECK-LABEL: define {{.*}}test1
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// CHECK-ios: call float @llvm.exp.f32
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// CHECK-macosx: call float @llvm.exp.f32
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// CHECK-tvos: call float @llvm.exp.f32
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// CHECK-watchos: call float @llvm.exp.f32
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// CHECK-darwin: call float @llvm.exp.f32
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// CHECK-linux-gnu: call float @expf
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// CHECK-windows: call float @expf
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public func test1(f : Float) -> Float {
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return exp(f)
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}
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// CHECK-LABEL: define {{.*}}test2
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// CHECK: call double @llvm.exp.f64
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public func test2(f : Double) -> Double {
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return _exp(f)
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}
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// CHECK-LABEL: define {{.*}}test3
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// CHECK: call double @sqrt
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public func test3(d : Double) -> Double {
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// This call uses the sqrt function imported from C.
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return sqrt(d)
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}
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// CHECK-LABEL: define {{.*}}test4
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// CHECK-LINUX: call float @llvm.sqrt.f32
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// CHECK-WINDOWS: call float @llvm.sqrt.f32
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public func test4(f : Float) -> Float {
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// This call does not match the signature for the C sqrt function
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// (as opposed to sqrtf) so instead it gets compiled using the generic
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// sqrt function from the stdlib's tgmath.swift. That translates to
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// _stdlib_squareRootf and then to __builtin_sqrtf via SwiftShims.
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return sqrt(f)
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}
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// CHECK-LABEL: define {{.*}}test3a
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// CHECK: call double @remainder
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public func test3a(d : Double) -> Double {
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return remainder(1,d)
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}
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// CHECK-LABEL: define {{.*}}test4a
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// CHECK: call float @remainder
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public func test4a(f : Float) -> Float {
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return remainder(1,f)
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}
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// CHECK-LABEL: define {{.*}}test5
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// CHECK: ret float 2
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public func test5( ) -> Float {
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return sqrt(4)
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}
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// CHECK-LABEL: define {{.*}}test6
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// CHECK: ret double 2
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public func test6( ) -> Double {
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return sqrt(4)
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}
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// CHECK-LABEL: define {{.*}}test7
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// CHECK-NOT: ret float undef
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public func test7( ) -> Float {
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return sqrt(-1)
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}
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// CHECK-LABEL: define {{.*}}test8
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// CHECK-NOT: ret double undef
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public func test8( ) -> Double {
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return sqrt(-1)
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}
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