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carbon-lang/toolchain/lower/testdata/template/operator.carbon
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Richard Smith 5a07a14fe9 Support for lowering templates (#7727) 
Add basic support for lowering templates: we can now lower `SpliceInst`
in the case where the generic and specific are from the same file (and
we don't support importing templates from other files yet in general).
In order for this to work, lowering needs to be able to query the
expression category, and to handle instructions that appear to be
(template) constants in the generic but turn out to be non-constant in
the specific, so support for that is added.

Switch `type_of_inst` from being added as an action inst to being added
as a normal inst, since it's not an action and the old approach led to a
crash in lowering.
2026-09-08 18:39:57 +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/full.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/template/operator.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/template/operator.carbon
// --- unary.carbon
library "[[@TEST_NAME]]";
fn Negate[template T: type](a: T) -> T {
return -a;
}
fn CallNegate(a: i32) -> i32 { return Negate(a); }
// --- binary.carbon
library "[[@TEST_NAME]]";
fn Add[template T: type](a: T, b: T) -> T {
return a + b;
}
fn CallAdd(a: i32, b: i32) -> i32 { return Add(a, b); }
// --- chained.carbon
library "[[@TEST_NAME]]";
fn Polynomial[template T: type](n: T) -> T {
return 3 * n * n + 5 * n - 2;
}
fn CallPolynomial(n: i32) -> i32 { return Polynomial(n); }
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'unary.carbon'
// CHECK:STDOUT: source_filename = "unary.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCallNegate.Main(i32 %a) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Negate.call = call i32 @_CNegate.Main.84588f41d61dafba(i32 %a), !dbg !10
// CHECK:STDOUT: ret i32 %Negate.call, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CNegate.Main.84588f41d61dafba(i32 %a) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Int.as.Negate.impl.Op.call = sub i32 0, %a, !dbg !15
// CHECK:STDOUT: %From.as_type.as.ImplicitAs.impl.Convert.call = call i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %Int.as.Negate.impl.Op.call), !dbg !16
// CHECK:STDOUT: ret i32 %From.as_type.as.ImplicitAs.impl.Convert.call, !dbg !16
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %self) #0 !dbg !17 {
// CHECK:STDOUT: %1 = call i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self), !dbg !21
// CHECK:STDOUT: ret i32 %1, !dbg !22
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self) #0 !dbg !23 {
// CHECK:STDOUT: ret i32 %self, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!0}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !1 = !DIFile(filename: "unary.carbon", directory: "")
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "CallNegate", linkageName: "_CCallNegate.Main", scope: null, file: !1, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 7, column: 39, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 7, column: 32, scope: !4)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "Negate", linkageName: "_CNegate.Main.84588f41d61dafba", scope: null, file: !1, line: 3, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)
// CHECK:STDOUT: !13 = !{!14}
// CHECK:STDOUT: !14 = !DILocalVariable(arg: 1, scope: !12, type: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 4, column: 10, scope: !12)
// CHECK:STDOUT: !16 = !DILocation(line: 4, column: 3, scope: !12)
// CHECK:STDOUT: !17 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044", scope: null, file: !18, line: 64, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !19)
// CHECK:STDOUT: !18 = !DIFile(filename: "{{.*}}/prelude/types/int.carbon", directory: "")
// CHECK:STDOUT: !19 = !{!20}
// CHECK:STDOUT: !20 = !DILocalVariable(arg: 1, scope: !17, type: !7)
// CHECK:STDOUT: !21 = !DILocation(line: 66, column: 17, scope: !17)
// CHECK:STDOUT: !22 = !DILocation(line: 66, column: 5, scope: !17)
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "AsInt", linkageName: "_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8", scope: null, file: !18, line: 59, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !24)
// CHECK:STDOUT: !24 = !{!25}
// CHECK:STDOUT: !25 = !DILocalVariable(arg: 1, scope: !23, type: !7)
// CHECK:STDOUT: !26 = !DILocation(line: 59, column: 28, scope: !23)
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'binary.carbon'
// CHECK:STDOUT: source_filename = "binary.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCallAdd.Main(i32 %a, i32 %b) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Add.call = call i32 @_CAdd.Main.84588f41d61dafba(i32 %a, i32 %b), !dbg !11
// CHECK:STDOUT: ret i32 %Add.call, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CAdd.Main.84588f41d61dafba(i32 %a, i32 %b) #0 !dbg !13 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Int.as.AddWith.impl.Op.call = add i32 %a, %b, !dbg !17
// CHECK:STDOUT: %From.as_type.as.ImplicitAs.impl.Convert.call = call i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %Int.as.AddWith.impl.Op.call), !dbg !18
// CHECK:STDOUT: ret i32 %From.as_type.as.ImplicitAs.impl.Convert.call, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %self) #0 !dbg !19 {
// CHECK:STDOUT: %1 = call i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self), !dbg !25
// CHECK:STDOUT: ret i32 %1, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self) #0 !dbg !27 {
// CHECK:STDOUT: ret i32 %self, !dbg !30
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!0}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !1 = !DIFile(filename: "binary.carbon", directory: "")
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "CallAdd", linkageName: "_CCallAdd.Main", scope: null, file: !1, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !7, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9, !10}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocalVariable(arg: 2, scope: !4, type: !7)
// CHECK:STDOUT: !11 = !DILocation(line: 7, column: 44, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 7, column: 37, scope: !4)
// CHECK:STDOUT: !13 = distinct !DISubprogram(name: "Add", linkageName: "_CAdd.Main.84588f41d61dafba", scope: null, file: !1, line: 3, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !14)
// CHECK:STDOUT: !14 = !{!15, !16}
// CHECK:STDOUT: !15 = !DILocalVariable(arg: 1, scope: !13, type: !7)
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 2, scope: !13, type: !7)
// CHECK:STDOUT: !17 = !DILocation(line: 4, column: 10, scope: !13)
// CHECK:STDOUT: !18 = !DILocation(line: 4, column: 3, scope: !13)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044", scope: null, file: !20, line: 64, type: !21, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !23)
// CHECK:STDOUT: !20 = !DIFile(filename: "{{.*}}/prelude/types/int.carbon", directory: "")
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{!7, !7}
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !19, type: !7)
// CHECK:STDOUT: !25 = !DILocation(line: 66, column: 17, scope: !19)
// CHECK:STDOUT: !26 = !DILocation(line: 66, column: 5, scope: !19)
// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "AsInt", linkageName: "_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8", scope: null, file: !20, line: 59, type: !21, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !28)
// CHECK:STDOUT: !28 = !{!29}
// CHECK:STDOUT: !29 = !DILocalVariable(arg: 1, scope: !27, type: !7)
// CHECK:STDOUT: !30 = !DILocation(line: 59, column: 28, scope: !27)
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'chained.carbon'
// CHECK:STDOUT: source_filename = "chained.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CCallPolynomial.Main(i32 %n) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Polynomial.call = call i32 @_CPolynomial.Main.84588f41d61dafba(i32 %n), !dbg !10
// CHECK:STDOUT: ret i32 %Polynomial.call, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CPolynomial.Main.84588f41d61dafba(i32 %n) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %T.as_type.as.MulWith.impl.Op.call.83a = mul i32 3, %n, !dbg !15
// CHECK:STDOUT: %Int.as.MulWith.impl.Op.call = mul i32 %T.as_type.as.MulWith.impl.Op.call.83a, %n, !dbg !15
// CHECK:STDOUT: %T.as_type.as.MulWith.impl.Op.call.958 = mul i32 5, %n, !dbg !16
// CHECK:STDOUT: %Int.as.AddWith.impl.Op.call = add i32 %Int.as.MulWith.impl.Op.call, %T.as_type.as.MulWith.impl.Op.call.958, !dbg !15
// CHECK:STDOUT: %Int.as.SubWith.impl.Op.call = sub i32 %Int.as.AddWith.impl.Op.call, 2, !dbg !15
// CHECK:STDOUT: %From.as_type.as.ImplicitAs.impl.Convert.call = call i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %Int.as.SubWith.impl.Op.call), !dbg !17
// CHECK:STDOUT: ret i32 %From.as_type.as.ImplicitAs.impl.Convert.call, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044"(i32 %self) #0 !dbg !18 {
// CHECK:STDOUT: %1 = call i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self), !dbg !22
// CHECK:STDOUT: ret i32 %1, !dbg !23
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @"_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8"(i32 %self) #0 !dbg !24 {
// CHECK:STDOUT: ret i32 %self, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!0}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !1 = !DIFile(filename: "chained.carbon", directory: "")
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "CallPolynomial", linkageName: "_CCallPolynomial.Main", scope: null, file: !1, line: 7, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !8)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !{!9}
// CHECK:STDOUT: !9 = !DILocalVariable(arg: 1, scope: !4, type: !7)
// CHECK:STDOUT: !10 = !DILocation(line: 7, column: 43, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 7, column: 36, scope: !4)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "Polynomial", linkageName: "_CPolynomial.Main.84588f41d61dafba", scope: null, file: !1, line: 3, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)
// CHECK:STDOUT: !13 = !{!14}
// CHECK:STDOUT: !14 = !DILocalVariable(arg: 1, scope: !12, type: !7)
// CHECK:STDOUT: !15 = !DILocation(line: 4, column: 10, scope: !12)
// CHECK:STDOUT: !16 = !DILocation(line: 4, column: 22, scope: !12)
// CHECK:STDOUT: !17 = !DILocation(line: 4, column: 3, scope: !12)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Convert", linkageName: "_CConvert.45e1f8de18643ddf:ImplicitAs.0bc6489996802dd4.Core.bb469f8924cce044", scope: null, file: !19, line: 64, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !20)
// CHECK:STDOUT: !19 = !DIFile(filename: "{{.*}}/prelude/types/int.carbon", directory: "")
// CHECK:STDOUT: !20 = !{!21}
// CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !18, type: !7)
// CHECK:STDOUT: !22 = !DILocation(line: 66, column: 17, scope: !18)
// CHECK:STDOUT: !23 = !DILocation(line: 66, column: 5, scope: !18)
// CHECK:STDOUT: !24 = distinct !DISubprogram(name: "AsInt", linkageName: "_CAsInt.Int.9452f4c51951679b.Core:AnyInt.Core.be1e879c1ad406d8", scope: null, file: !19, line: 59, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !25)
// CHECK:STDOUT: !25 = !{!26}
// CHECK:STDOUT: !26 = !DILocalVariable(arg: 1, scope: !24, type: !7)
// CHECK:STDOUT: !27 = !DILocation(line: 59, column: 28, scope: !24)
// CHECK:STDOUT:
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