913f7e93da
When building the kernel with LTO, KCOV & debug information enabled, multiple inlinable SanitizerCoverage 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/D155377
51 lines
2.0 KiB
LLVM
51 lines
2.0 KiB
LLVM
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=2 -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) !dbg !3 {
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entry:
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%tmp1 = load i32, ptr %a, align 4
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%cmp = icmp eq i32 %tmp1, 42
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br i1 %cmp, label %0, label %1
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0:
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store i32 %tmp1, ptr %b
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br label %1
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1:
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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 @__sanitizer_cov_trace_pc_guard(ptr @__sancov_gen_) #1, !dbg [[DBG1:![0-9]+]]
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; CHECK: call void @__sanitizer_cov_trace_pc_guard(ptr inttoptr (i64 add (i64 ptrtoint (ptr @__sancov_gen_ to i64), i64 4) to ptr)) #1, !dbg [[DBG2:![0-9]+]]
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define i32 @without_dbg(ptr %a, ptr %b) {
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entry:
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%tmp1 = load i32, ptr %a, align 4
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%cmp = icmp eq i32 %tmp1, 42
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br i1 %cmp, label %0, label %1
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0:
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store i32 %tmp1, ptr %b
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br label %1
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1:
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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 @__sanitizer_cov_trace_pc_guard(ptr @__sancov_gen_.1) #1
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; CHECK: call void @__sanitizer_cov_trace_pc_guard(ptr inttoptr (i64 add (i64 ptrtoint (ptr @__sancov_gen_.1 to i64), i64 4) to ptr)) #1
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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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!6 = !DILocation(line: 192, scope: !3)
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!7 = !DILocation(line: 0, scope: !3)
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; CHECK: [[DBG1]] = !DILocation(line: 192, scope: !3)
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; CHECK: [[DBG2]] = !DILocation(line: 0, scope: !3)
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