carbon-lang/toolchain/lower/testdata/function/definition/var_param.carbon

// 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/int.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/definition/var_param.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/definition/var_param.carbon

class X {}

fn OneVar_i32(var n: i32) {}
fn OneVar_X(var x: X) {}

fn TwoVars(var a: i32, var b: X) {}

fn VarThenLet(var a: i32, b: X) {}
fn LetThenVar(a: i32, var b: X) {}

fn Call() {
  OneVar_i32(1);
  OneVar_X({});
  TwoVars(1, {});
  VarThenLet(1, {});
  LetThenVar(1, {});
}

// CHECK:STDOUT: ; ModuleID = 'var_param.carbon'
// CHECK:STDOUT: source_filename = "var_param.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @X.val.loc16_13.2 = internal constant {} zeroinitializer
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneVar_i32.Main(ptr %n) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void, !dbg !7
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneVar_X.Main(ptr %x) #0 !dbg !8 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void, !dbg !9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CTwoVars.Main(ptr %a, ptr %b) #0 !dbg !10 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CVarThenLet.Main(ptr %a, ptr %b) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CLetThenVar.Main(i32 %a, ptr %b) #0 !dbg !14 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void, !dbg !15
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCall.Main() #0 !dbg !16 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   %.loc15_15.1.temp = alloca i32, align 4, !dbg !17
// CHECK:STDOUT:   %.loc16_13.1.temp = alloca {}, align 8, !dbg !18
// CHECK:STDOUT:   %.loc18_12.1.temp = alloca i32, align 4, !dbg !19
// CHECK:STDOUT:   %.loc18_24.1.temp = alloca {}, align 8, !dbg !20
// CHECK:STDOUT:   %.loc20_15.1.temp = alloca i32, align 4, !dbg !21
// CHECK:STDOUT:   %.loc27_18.2.temp = alloca {}, align 8, !dbg !22
// CHECK:STDOUT:   %.loc21_23.1.temp = alloca {}, align 8, !dbg !23
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc15_15.1.temp), !dbg !17
// CHECK:STDOUT:   store i32 1, ptr %.loc15_15.1.temp, align 4, !dbg !17
// CHECK:STDOUT:   call void @_COneVar_i32.Main(ptr %.loc15_15.1.temp), !dbg !24
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc16_13.1.temp), !dbg !18
// CHECK:STDOUT:   call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc16_13.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !18
// CHECK:STDOUT:   call void @_COneVar_X.Main(ptr %.loc16_13.1.temp), !dbg !25
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc18_12.1.temp), !dbg !19
// CHECK:STDOUT:   store i32 1, ptr %.loc18_12.1.temp, align 4, !dbg !19
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc18_24.1.temp), !dbg !20
// CHECK:STDOUT:   call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc18_24.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !20
// CHECK:STDOUT:   call void @_CTwoVars.Main(ptr %.loc18_12.1.temp, ptr %.loc18_24.1.temp), !dbg !26
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc20_15.1.temp), !dbg !21
// CHECK:STDOUT:   store i32 1, ptr %.loc20_15.1.temp, align 4, !dbg !21
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc27_18.2.temp), !dbg !22
// CHECK:STDOUT:   call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc27_18.2.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !22
// CHECK:STDOUT:   call void @_CVarThenLet.Main(ptr %.loc20_15.1.temp, ptr %.loc27_18.2.temp), !dbg !27
// CHECK:STDOUT:   call void @llvm.lifetime.start.p0(ptr %.loc21_23.1.temp), !dbg !23
// CHECK:STDOUT:   call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc21_23.1.temp, ptr align 1 @X.val.loc16_13.2, i64 0, i1 false), !dbg !23
// CHECK:STDOUT:   call void @_CLetThenVar.Main(i32 1, ptr %.loc21_23.1.temp), !dbg !28
// CHECK:STDOUT:   ret void, !dbg !29
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 6, 5, 4, 3, 2, 1, 0 }
// CHECK:STDOUT: uselistorder ptr @llvm.memcpy.p0.p0.i64, { 3, 2, 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #2 = { nocallback nofree 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_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "var_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "OneVar_i32", linkageName: "_COneVar_i32.Main", scope: null, file: !3, line: 15, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 15, column: 1, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "OneVar_X", linkageName: "_COneVar_X.Main", scope: null, file: !3, line: 16, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 16, column: 1, scope: !8)
// CHECK:STDOUT: !10 = distinct !DISubprogram(name: "TwoVars", linkageName: "_CTwoVars.Main", scope: null, file: !3, line: 18, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !11 = !DILocation(line: 18, column: 1, scope: !10)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "VarThenLet", linkageName: "_CVarThenLet.Main", scope: null, file: !3, line: 20, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !13 = !DILocation(line: 20, column: 1, scope: !12)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "LetThenVar", linkageName: "_CLetThenVar.Main", scope: null, file: !3, line: 21, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !15 = !DILocation(line: 21, column: 1, scope: !14)
// CHECK:STDOUT: !16 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !3, line: 23, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !17 = !DILocation(line: 15, column: 15, scope: !16)
// CHECK:STDOUT: !18 = !DILocation(line: 16, column: 13, scope: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 18, column: 12, scope: !16)
// CHECK:STDOUT: !20 = !DILocation(line: 18, column: 24, scope: !16)
// CHECK:STDOUT: !21 = !DILocation(line: 20, column: 15, scope: !16)
// CHECK:STDOUT: !22 = !DILocation(line: 27, column: 17, scope: !16)
// CHECK:STDOUT: !23 = !DILocation(line: 21, column: 23, scope: !16)
// CHECK:STDOUT: !24 = !DILocation(line: 24, column: 3, scope: !16)
// CHECK:STDOUT: !25 = !DILocation(line: 25, column: 3, scope: !16)
// CHECK:STDOUT: !26 = !DILocation(line: 26, column: 3, scope: !16)
// CHECK:STDOUT: !27 = !DILocation(line: 27, column: 3, scope: !16)
// CHECK:STDOUT: !28 = !DILocation(line: 28, column: 3, scope: !16)
// CHECK:STDOUT: !29 = !DILocation(line: 23, column: 1, scope: !16)