| // RUN: %target-swift-frontend -O -module-name=test -emit-sil %s | %FileCheck %s |
| |
| func convert< |
| T: BinaryFloatingPoint, U: BinaryFloatingPoint |
| >(_ value: T, to: U.Type) -> U { |
| U(value) |
| } |
| |
| // Check that the following functions can be optimized to concrete conversions. |
| |
| // CHECK-LABEL: sil @$s4test0A13DoubleToFloatySfSdF |
| // CHECK: bb0(%0 : $Double): |
| // CHECK: struct_extract %0 : $Double, #Double._value |
| // CHECK-NEXT: builtin "fptrunc_FPIEEE64_FPIEEE32" |
| // CHECK-NEXT: struct $Float |
| // CHECK-NEXT: return |
| // CHECK-NEXT: } // end sil function '$s4test0A13DoubleToFloatySfSdF' |
| public func testDoubleToFloat(_ x: Double) -> Float { |
| return convert(x, to: Float.self) |
| } |
| |
| // CHECK-LABEL: sil @$s4test0A13FloatToDoubleySdSfF |
| // CHECK: bb0(%0 : $Float): |
| // CHECK: struct_extract %0 : $Float, #Float._value |
| // CHECK-NEXT: builtin "fpext_FPIEEE32_FPIEEE64" |
| // CHECK-NEXT: struct $Double |
| // CHECK-NEXT: return |
| // CHECK-NEXT: } // end sil function '$s4test0A13FloatToDoubleySdSfF' |
| public func testFloatToDouble(_ x: Float) -> Double { |
| return convert(x, to: Double.self) |
| } |
| |
| // Check that the following functions can be optimized to no-ops. |
| |
| // CHECK-LABEL: sil @$s4test0A6DoubleyS2dF |
| // CHECK: return %0 |
| // CHECK: } // end sil function '$s4test0A6DoubleyS2dF' |
| public func testDouble(_ x: Double) -> Double { |
| return convert(x, to: Double.self) |
| } |
| |
| // CHECK-LABEL: sil @$s4test0A5FloatyS2fF |
| // CHECK: return %0 |
| // CHECK: } // end sil function '$s4test0A5FloatyS2fF' |
| public func testFloat(_ x: Float) -> Float { |
| return convert(x, to: Float.self) |
| } |
