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llvm-project/llvm/test/Instrumentation/SanitizerCoverage/coverage2-dbg.ll

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[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
; Test that coverage instrumentation does not lose debug location.
Move asan-coverage into a separate phase. Summary: This change moves asan-coverage instrumentation into a separate Module pass. The other part of the change in clang introduces a new flag -fsanitize-coverage=N. Another small patch will update tests in compiler-rt. With this patch no functionality change is expected except for the flag name. The following changes will make the coverage instrumentation work with tsan/msan Test Plan: Run regression tests, chromium. Reviewers: nlewycky, samsonov Reviewed By: nlewycky, samsonov Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6152 llvm-svn: 221718
2014-11-12 06:14:37 +08:00
; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
; C++ source:
; 1: void foo(int *a) {
; 2: if (a)
; 3: *a = 0;
; 4: }
; clang++ if.cc -O3 -g -S -emit-llvm
; and add sanitize_address to @_Z3fooPi
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Check that __sanitizer_cov call has !dgb pointing to the beginning
; of appropriate basic blocks.
; CHECK-LABEL:_Z3fooPi
; CHECK: call void @__sanitizer_cov(), !dbg [[A:!.*]]
; CHECK: call void @__sanitizer_cov(), !dbg [[B:!.*]]
; CHECK: call void @__sanitizer_cov(), !dbg [[C:!.*]]
; CHECK: ret void
; CHECK: [[A]] = metadata !{i32 1, i32 0, metadata !{{.*}}, null}
; CHECK: [[B]] = metadata !{i32 3, i32 5, metadata !{{.*}}, null}
; CHECK: [[C]] = metadata !{i32 4, i32 1, metadata !{{.*}}, null}
define void @_Z3fooPi(i32* %a) #0 {
entry:
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
tail call void @llvm.dbg.value(metadata !{i32* %a}, i64 0, metadata !11, metadata !{metadata !"0x102"}), !dbg !15
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
%tobool = icmp eq i32* %a, null, !dbg !16
br i1 %tobool, label %if.end, label %if.then, !dbg !16
if.then: ; preds = %entry
store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19
br label %if.end, !dbg !18
if.end: ; preds = %entry, %if.then
ret void, !dbg !23
}
; Function Attrs: nounwind readnone
Move the complex address expression out of DIVariable and into an extra argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. llvm-svn: 218787
2014-10-02 02:55:02 +08:00
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" sanitize_address}
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!12, !13}
!llvm.ident = !{!14}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!0 = metadata !{metadata !"0x11\004\00clang version 3.6.0 (217079)\001\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [FOO/if.cc] [DW_LANG_C_plus_plus]
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!1 = metadata !{metadata !"if.cc", metadata !"FOO"}
!2 = metadata !{}
!3 = metadata !{metadata !4}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!4 = metadata !{metadata !"0x2e\00foo\00foo\00_Z3fooPi\001\000\001\000\006\00256\001\001", metadata !1, metadata !5, metadata !6, null, void (i32*)* @_Z3fooPi, null, null, metadata !10} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [FOO/if.cc]
!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!7 = metadata !{null, metadata !8}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!8 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
!9 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!10 = metadata !{metadata !11}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!11 = metadata !{metadata !"0x101\00a\0016777217\000", metadata !4, metadata !5, metadata !8} ; [ DW_TAG_arg_variable ] [a] [line 1]
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!12 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!13 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!14 = metadata !{metadata !"clang version 3.6.0 (217079)"}
!15 = metadata !{i32 1, i32 15, metadata !4, null}
!16 = metadata !{i32 2, i32 7, metadata !17, null}
Revert "Revert "DI: Fold constant arguments into a single MDString"" This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!17 = metadata !{metadata !"0xb\002\007\000", metadata !1, metadata !4} ; [ DW_TAG_lexical_block ] [FOO/if.cc]
[asan] fix debug info produced for asan-coverage=2 llvm-svn: 217106
2014-09-04 07:24:18 +08:00
!18 = metadata !{i32 3, i32 5, metadata !17, null}
!19 = metadata !{metadata !20, metadata !20, i64 0}
!20 = metadata !{metadata !"int", metadata !21, i64 0}
!21 = metadata !{metadata !"omnipotent char", metadata !22, i64 0}
!22 = metadata !{metadata !"Simple C/C++ TBAA"}
!23 = metadata !{i32 4, i32 1, metadata !4, null}