Files
carbon-lang/toolchain/lower/testdata/builtins/float_to_float.carbon
T
Richard Smith 947c1eb527 Add a Core.Array class type, and make array refer to it. (#7892)
As described in proposal #4682, make `array(T, N)` be syntactic sugar
for the type `Core.Array` defined in the standard library. This provides
a home for impls that are specific to `Core.Array`.

Assisted-by: Gemini and Claude via Antigravity
2026-10-06 17:23:49 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/primitives.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/builtins/float_to_float.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/builtins/float_to_float.carbon
// --- float_to_float.carbon
library "[[@TEST_NAME]]";
fn ConvertF32ToF64(a: f32) -> f64 = "float.convert";
fn TestConvertF32ToF64(a: f32) -> f64 { return ConvertF32ToF64(a); }
fn ConvertF64ToF32(a: f64) -> f32 = "float.convert";
fn TestConvertF64ToF32(a: f64) -> f32 { return ConvertF64ToF32(a); }
fn ConvertF16ToF128(a: f16) -> f128 = "float.convert";
fn TestConvertF16ToF128(a: f16) -> f128 { return ConvertF16ToF128(a); }
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'float_to_float.carbon'
// CHECK:STDOUT: source_filename = "float_to_float.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define double @_CTestConvertF32ToF64.Main(float %a) #0 !dbg !39 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ConvertF32ToF64.call = fpext float %a to double, !dbg !45
// CHECK:STDOUT: ret double %ConvertF32ToF64.call, !dbg !46
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define float @_CTestConvertF64ToF32.Main(double %a) #0 !dbg !48 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ConvertF64ToF32.call = fptrunc double %a to float, !dbg !54
// CHECK:STDOUT: ret float %ConvertF64ToF32.call, !dbg !55
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define fp128 @_CTestConvertF16ToF128.Main(half %a) #0 !dbg !57 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %ConvertF16ToF128.call = fpext half %a to fp128, !dbg !63
// CHECK:STDOUT: ret fp128 %ConvertF16ToF128.call, !dbg !64
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!35}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !34 = !DIFile(filename: "float_to_float.carbon", directory: "")
// CHECK:STDOUT: !35 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !34, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !37 = !{!36, !36}
// CHECK:STDOUT: !38 = !DISubroutineType(types: !37)
// CHECK:STDOUT: !39 = distinct !DISubprogram(name: "TestConvertF32ToF64", linkageName: "_CTestConvertF32ToF64.Main", scope: null, file: !34, line: 4, type: !38, spFlags: DISPFlagDefinition, unit: !35, retainedNodes: !47)
// CHECK:STDOUT: !40 = !DILocalVariable(arg: 1, scope: !39, type: !36)
// CHECK:STDOUT: !45 = !DILocation(line: 4, column: 48, scope: !39)
// CHECK:STDOUT: !46 = !DILocation(line: 4, column: 41, scope: !39)
// CHECK:STDOUT: !47 = !{!40}
// CHECK:STDOUT: !48 = distinct !DISubprogram(name: "TestConvertF64ToF32", linkageName: "_CTestConvertF64ToF32.Main", scope: null, file: !34, line: 7, type: !38, spFlags: DISPFlagDefinition, unit: !35, retainedNodes: !56)
// CHECK:STDOUT: !49 = !DILocalVariable(arg: 1, scope: !48, type: !36)
// CHECK:STDOUT: !54 = !DILocation(line: 7, column: 48, scope: !48)
// CHECK:STDOUT: !55 = !DILocation(line: 7, column: 41, scope: !48)
// CHECK:STDOUT: !56 = !{!49}
// CHECK:STDOUT: !57 = distinct !DISubprogram(name: "TestConvertF16ToF128", linkageName: "_CTestConvertF16ToF128.Main", scope: null, file: !34, line: 10, type: !38, spFlags: DISPFlagDefinition, unit: !35, retainedNodes: !65)
// CHECK:STDOUT: !58 = !DILocalVariable(arg: 1, scope: !57, type: !36)
// CHECK:STDOUT: !63 = !DILocation(line: 10, column: 50, scope: !57)
// CHECK:STDOUT: !64 = !DILocation(line: 10, column: 43, scope: !57)
// CHECK:STDOUT: !65 = !{!58}
// CHECK:STDOUT: