mirror of
https://github.com/carbon-language/carbon-lang.git
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David BlaikieandJon Ross-Perkins
ea8ad22a17
Still doesn't have line tables, so of limited value (at least now this'll be enough that LLVM really generates debug info into the resulting object file (whereas with only the compilation unit metadata, LLVM will consider it empty and avoid emitting any of it)) - but another step along the path. This also doesn't attach the right source location to the functions - I'll do that in a follow-up change because I think it'll require the majority of the refactoring between driver and check to extract the essential functionality sem_ir_diagnostic_converter, I think, to allow retrieving source locations during lowering. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
46 lines
2.1 KiB
Plaintext
46 lines
2.1 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/pointer/pointer_to_pointer.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/pointer/pointer_to_pointer.carbon
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fn F(p: i32**) -> i32 {
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var a: i32** = p;
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var b: i32* = *p;
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var c: i32** = &b;
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return **c;
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}
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// CHECK:STDOUT: ; ModuleID = 'pointer_to_pointer.carbon'
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// CHECK:STDOUT: source_filename = "pointer_to_pointer.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define i32 @F(ptr %p) !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %a.var = alloca ptr, align 8
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// CHECK:STDOUT: store ptr %p, ptr %a.var, align 8
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// CHECK:STDOUT: %b.var = alloca ptr, align 8
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// CHECK:STDOUT: %.loc13_17.2 = load ptr, ptr %p, align 8
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// CHECK:STDOUT: store ptr %.loc13_17.2, ptr %b.var, align 8
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// CHECK:STDOUT: %c.var = alloca ptr, align 8
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// CHECK:STDOUT: store ptr %b.var, ptr %c.var, align 8
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// CHECK:STDOUT: %.loc15_12 = load ptr, ptr %c.var, align 8
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// CHECK:STDOUT: %.loc15_11.2 = load ptr, ptr %.loc15_12, align 8
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// CHECK:STDOUT: %.loc15_10.2 = load i32, ptr %.loc15_11.2, align 4
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// CHECK:STDOUT: ret i32 %.loc15_10.2
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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: "pointer_to_pointer.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", scope: null, 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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