4a8b124930
When building the kernel with LTO, KASAN & debug information enabled, multiple inlinable AddressSanitizer functions require debug information present. In such cases we repurpose the InstrumentationIRBuilder that ensures the necessary debug information is added if necessary. This has been done analogous to the work for the ThreadSanitizer in D124937. Bug: https://github.com/ClangBuiltLinux/linux/issues/1721 Reviewed By: melver Differential Revision: https://reviews.llvm.org/D155376
38 lines
1.5 KiB
LLVM
38 lines
1.5 KiB
LLVM
; RUN: opt < %s -passes=asan -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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define i32 @with_dbg(ptr %a, ptr %b) sanitize_address !dbg !3 {
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entry:
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%tmp1 = load i32, ptr %a, align 4
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store i32 32, ptr %b
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ret i32 %tmp1
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}
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; CHECK-LABEL: @with_dbg
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; CHECK-NEXT: entry:
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; CHECK: call void @__asan_report_load4(i64 %0) #3, !dbg [[DBG:![0-9]+]]
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; CHECK: call void @__asan_report_store4(i64 %13) #3, !dbg [[DBG]]
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define i32 @without_dbg(ptr %a, ptr %b) sanitize_address {
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entry:
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%tmp1 = load i32, ptr %a, align 4
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store i32 32, ptr %b
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ret i32 %tmp1
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}
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; CHECK-LABEL: @without_dbg
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; CHECK-NEXT: entry:
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; CHECK: call void @__asan_report_load4(i64 %0) #3
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; CHECK: call void @__asan_report_store4(i64 %13) #3
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C89, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "foo.c", directory: "")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 190, type: !4, scopeLine: 192, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!4 = !DISubroutineType(types: !5)
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!5 = !{}
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; CHECK: [[DBG]] = !DILocation(line: 0, scope: !3)
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