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carbon-lang/toolchain/lower/testdata/class/adapt.carbon
T
Richard Smith c04d62a7d1 Ensure that all allocas are created in the entry block. (#4685) 
Non-entry-block allocas will allocate new stack memory each time they're
reached, resulting in leaking stack memory over time for allocas in a
loop. Move all such allocas to the entry block instead, and use an LLVM
intrinsic to mark when the lifetime of the variable actually begins.
2024-12-17 00:55:06 +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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/class/adapt.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/class/adapt.carbon
// --- adapt_class.carbon
library "[[@TEST_NAME]]";
class PairOfInts {
var a: i32;
var b: i32;
fn Make() -> Self {
return {.a = 1, .b = 2};
}
}
class PairAdapter {
adapt PairOfInts;
fn Make() -> Self {
return PairOfInts.Make() as Self;
}
fn GetB[self: Self]() -> i32 {
let pi: PairOfInts = self as PairOfInts;
return pi.b;
}
}
fn Use() -> i32 {
var pa: PairAdapter = PairAdapter.Make();
return pa.GetB();
}
// --- adapt_int.carbon
library "[[@TEST_NAME]]";
class Int {
adapt i32;
}
fn DoStuff(a: Int) -> Int {
return a;
}
// CHECK:STDOUT: ; ModuleID = 'adapt_class.carbon'
// CHECK:STDOUT: source_filename = "adapt_class.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @PairOfInts.val.loc9_28 = internal constant { i32, i32 } { i32 1, i32 2 }
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CMake.PairOfInts.Main(ptr sret({ i32, i32 }) %return) !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc9_27.3.a = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 0, !dbg !7
// CHECK:STDOUT: %.loc9_27.6.b = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 1, !dbg !7
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %return, ptr align 4 @PairOfInts.val.loc9_28, i64 8, i1 false), !dbg !8
// CHECK:STDOUT: ret void, !dbg !8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define void @_CMake.PairAdapter.Main(ptr sret({ i32, i32 }) %return) !dbg !9 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CMake.PairOfInts.Main(ptr %return), !dbg !10
// CHECK:STDOUT: ret void, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CGetB.PairAdapter.Main(ptr %self) !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc22_14.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !13
// CHECK:STDOUT: %.loc22_14.2 = load i32, ptr %.loc22_14.1.b, align 4, !dbg !13
// CHECK:STDOUT: ret i32 %.loc22_14.2, !dbg !14
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CUse.Main() !dbg !15 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %pa.var = alloca { i32, i32 }, align 8, !dbg !16
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 8, ptr %pa.var), !dbg !16
// CHECK:STDOUT: call void @_CMake.PairAdapter.Main(ptr %pa.var), !dbg !17
// CHECK:STDOUT: %GetB.call = call i32 @_CGetB.PairAdapter.Main(ptr %pa.var), !dbg !18
// CHECK:STDOUT: ret i32 %GetB.call, !dbg !19
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "adapt_class.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairOfInts.Main", scope: null, file: !3, line: 8, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 9, column: 12, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 9, column: 5, scope: !4)
// CHECK:STDOUT: !9 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairAdapter.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !10 = !DILocation(line: 17, column: 12, scope: !9)
// CHECK:STDOUT: !11 = !DILocation(line: 17, column: 5, scope: !9)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "GetB", linkageName: "_CGetB.PairAdapter.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !13 = !DILocation(line: 22, column: 12, scope: !12)
// CHECK:STDOUT: !14 = !DILocation(line: 22, column: 5, scope: !12)
// CHECK:STDOUT: !15 = distinct !DISubprogram(name: "Use", linkageName: "_CUse.Main", scope: null, file: !3, line: 26, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !16 = !DILocation(line: 27, column: 7, scope: !15)
// CHECK:STDOUT: !17 = !DILocation(line: 27, column: 25, scope: !15)
// CHECK:STDOUT: !18 = !DILocation(line: 28, column: 10, scope: !15)
// CHECK:STDOUT: !19 = !DILocation(line: 28, column: 3, scope: !15)
// CHECK:STDOUT: ; ModuleID = 'adapt_int.carbon'
// CHECK:STDOUT: source_filename = "adapt_int.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CDoStuff.Main(i32 %a) !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %a, !dbg !7
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "adapt_int.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "DoStuff", linkageName: "_CDoStuff.Main", scope: null, file: !3, line: 8, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 9, column: 3, scope: !4)
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