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a548eff0bb
This seems to be enough to avoid naming collisions for functions in any of the current test cases (verified by asserting that the name of the `llvm::Function` matches the name passed to create it - not triggering LLVM's numbering that happens when names collide) It currently implements mangling for namespace scopes, class scopes, and impls. Nothing generic is mangled yet - haven't looked at how that works, though evidently it's not covered by existing testing, I guess. Follow-up change will document the current mangling algorithm in `toolchain/docs/lower.md` --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com> Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
45 lines
2.3 KiB
Plaintext
45 lines
2.3 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/operators/or_empty_block.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/operators/or_empty_block.carbon
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fn Or(b: bool, c: bool) -> bool {
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// Note that in this case, we must generate an empty block so that the `phi`
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// has two distinct predecessors.
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return b or c;
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}
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// CHECK:STDOUT: ; ModuleID = 'or_empty_block.carbon'
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// CHECK:STDOUT: source_filename = "or_empty_block.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i1 @_COr.Main(i1 %b, i1 %c) !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %.loc14_12.1 = xor i1 %b, true, !dbg !7
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// CHECK:STDOUT: br i1 %.loc14_12.1, label %or.rhs, label %or.result, !dbg !7
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// CHECK:STDOUT:
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// CHECK:STDOUT: or.rhs: ; preds = %entry
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// CHECK:STDOUT: br label %or.result, !dbg !7
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// CHECK:STDOUT:
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// CHECK:STDOUT: or.result: ; preds = %or.rhs, %entry
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// CHECK:STDOUT: %0 = phi i1 [ true, %entry ], [ %c, %or.rhs ]
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// CHECK:STDOUT: ret i1 %0, !dbg !8
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "or_empty_block.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Or", linkageName: "_COr.Main", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
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// CHECK:STDOUT: !6 = !{}
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// CHECK:STDOUT: !7 = !DILocation(line: 14, column: 10, scope: !4)
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// CHECK:STDOUT: !8 = !DILocation(line: 14, column: 3, scope: !4)
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