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ba6257891e614ddfcc441d060bf6427627a3df5f
carbon-lang/toolchain/lower/testdata/function/generic/call_basic_depth.carbon
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Geoff Romer ba6257891e Remove ValueParamPattern case from deduction (#6869) 
This case is redundant: when deducing against a runtime parameter
pattern, the type is all that matters, and the type is added to the
deduction earlier. Additionally deducing the same argument against
parameter's subpattern just creates duplicate work, because the
subpattern has the same type.
2026-03-10 21:15:38 +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/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/generic/call_basic_depth.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/call_basic_depth.carbon
// Builds on `call_basic.carbon`. Checks definitions are emitted with deeper
// call stack, i.e., when functions can be type checked without looking at the
// specific calling context.
fn F[T:! type](_: T) {
}
fn H[T:! Core.Copy](x: T) -> T {
F(x);
return x;
}
fn G[T:! Core.Copy & Core.Destroy](x: T) -> T {
H(x);
F(x);
return x;
}
fn M() -> i32 {
var n: i32 = 0;
var m: i32;
F(n);
m = G(n);
return m;
}
// CHECK:STDOUT: ; ModuleID = 'call_basic_depth.carbon'
// CHECK:STDOUT: source_filename = "call_basic_depth.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CM.Main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %n.var = alloca i32, align 4, !dbg !8
// CHECK:STDOUT: %m.var = alloca i32, align 4, !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %n.var), !dbg !8
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %m.var), !dbg !9
// CHECK:STDOUT: %.loc34 = load i32, ptr %n.var, align 4, !dbg !10
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %.loc34), !dbg !11
// CHECK:STDOUT: %.loc35_9 = load i32, ptr %n.var, align 4, !dbg !12
// CHECK:STDOUT: %G.call = call i32 @_CG.Main.bfb441135f07cbe1(i32 %.loc35_9), !dbg !13
// CHECK:STDOUT: store i32 %G.call, ptr %m.var, align 4, !dbg !14
// CHECK:STDOUT: %.loc36 = load i32, ptr %m.var, align 4, !dbg !15
// CHECK:STDOUT: ret i32 %.loc36, !dbg !16
// 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: nounwind
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.b88d1103f417c6d4(i32 %_) #0 !dbg !17 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !22
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CG.Main.bfb441135f07cbe1(i32 %x) #0 !dbg !23 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc25_6.2.temp = alloca i32, align 4, !dbg !28
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc25_6.2.temp), !dbg !28
// CHECK:STDOUT: %H.call = call i32 @_CH.Main.64ccbb8e5d9a0b8e(i32 %x), !dbg !28
// CHECK:STDOUT: store i32 %H.call, ptr %.loc25_6.2.temp, align 4, !dbg !28
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %x), !dbg !29
// CHECK:STDOUT: ret i32 %x, !dbg !30
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr i32 @_CH.Main.64ccbb8e5d9a0b8e(i32 %x) #0 !dbg !31 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF.Main.b88d1103f417c6d4(i32 %x), !dbg !34
// CHECK:STDOUT: ret i32 %x, !dbg !35
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 0, 2, 1 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// 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_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "call_basic_depth.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "M", linkageName: "_CM.Main", scope: null, file: !3, line: 30, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !DILocation(line: 31, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 32, column: 3, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 34, column: 5, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 34, column: 3, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 35, column: 9, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 35, column: 7, scope: !4)
// CHECK:STDOUT: !14 = !DILocation(line: 35, column: 3, scope: !4)
// CHECK:STDOUT: !15 = !DILocation(line: 36, column: 10, scope: !4)
// CHECK:STDOUT: !16 = !DILocation(line: 36, column: 3, scope: !4)
// CHECK:STDOUT: !17 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.b88d1103f417c6d4", scope: null, file: !3, line: 16, type: !18, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !20)
// CHECK:STDOUT: !18 = !DISubroutineType(types: !19)
// CHECK:STDOUT: !19 = !{null, !7}
// CHECK:STDOUT: !20 = !{!21}
// CHECK:STDOUT: !21 = !DILocalVariable(arg: 1, scope: !17, type: !7)
// CHECK:STDOUT: !22 = !DILocation(line: 16, column: 1, scope: !17)
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.bfb441135f07cbe1", scope: null, file: !3, line: 24, type: !24, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !26)
// CHECK:STDOUT: !24 = !DISubroutineType(types: !25)
// CHECK:STDOUT: !25 = !{!7, !7}
// CHECK:STDOUT: !26 = !{!27}
// CHECK:STDOUT: !27 = !DILocalVariable(arg: 1, scope: !23, type: !7)
// CHECK:STDOUT: !28 = !DILocation(line: 25, column: 3, scope: !23)
// CHECK:STDOUT: !29 = !DILocation(line: 26, column: 3, scope: !23)
// CHECK:STDOUT: !30 = !DILocation(line: 27, column: 3, scope: !23)
// CHECK:STDOUT: !31 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main.64ccbb8e5d9a0b8e", scope: null, file: !3, line: 19, type: !24, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !32)
// CHECK:STDOUT: !32 = !{!33}
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 1, scope: !31, type: !7)
// CHECK:STDOUT: !34 = !DILocation(line: 20, column: 3, scope: !31)
// CHECK:STDOUT: !35 = !DILocation(line: 21, column: 3, scope: !31)
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