bf9814b705
Emit all constant integers produced by SanitizerBinaryMetadata as ULEB128 to further reduce binary space used. Increasing the version is not necessary given this change depends on (and will land) along with the bump to v2. To support this, the !pcsections metadata format is extended to allow for per-section options, encoded in the first MD operator which must always be a string and contain the section: "<section>!<options>". Reviewed By: dvyukov Differential Revision: https://reviews.llvm.org/D143484
37 lines
1.9 KiB
C
37 lines
1.9 KiB
C
// RUN: %clang_cc1 -O -fexperimental-sanitize-metadata=atomics -triple x86_64-gnu-linux -x c -S -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,ATOMICS
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// RUN: %clang_cc1 -O -fexperimental-sanitize-metadata=atomics -triple aarch64-gnu-linux -x c -S -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,ATOMICS
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// CHECK: @__start_sanmd_atomics = extern_weak hidden global ptr
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// CHECK: @__stop_sanmd_atomics = extern_weak hidden global ptr
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// CHECK: @__start_sanmd_covered = extern_weak hidden global ptr
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// CHECK: @__stop_sanmd_covered = extern_weak hidden global ptr
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int x, y;
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void empty() {
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// CHECK-NOT: define dso_local void @empty() {{.*}} !pcsections
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}
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int atomics() {
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// ATOMICS-LABEL: define dso_local i32 @atomics()
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// ATOMICS-SAME: !pcsections ![[ATOMICS_COVERED:[0-9]+]]
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// ATOMICS-NEXT: entry:
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// ATOMICS-NEXT: atomicrmw add {{.*}} !pcsections ![[ATOMIC_OP:[0-9]+]]
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// ATOMICS-NOT: load {{.*}} !pcsections
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__atomic_fetch_add(&x, 1, __ATOMIC_RELAXED);
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return y;
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}
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// ATOMICS-LABEL: __sanitizer_metadata_atomics.module_ctor
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// ATOMICS: call void @__sanitizer_metadata_atomics_add(i32 2, ptr @__start_sanmd_atomics, ptr @__stop_sanmd_atomics)
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// ATOMICS-LABEL: __sanitizer_metadata_atomics.module_dtor
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// ATOMICS: call void @__sanitizer_metadata_atomics_del(i32 2, ptr @__start_sanmd_atomics, ptr @__stop_sanmd_atomics)
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// CHECK-LABEL: __sanitizer_metadata_covered.module_ctor
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// CHECK: call void @__sanitizer_metadata_covered_add(i32 2, ptr @__start_sanmd_covered, ptr @__stop_sanmd_covered)
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// CHECK-LABEL: __sanitizer_metadata_covered.module_dtor
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// CHECK: call void @__sanitizer_metadata_covered_del(i32 2, ptr @__start_sanmd_covered, ptr @__stop_sanmd_covered)
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// ATOMICS: ![[ATOMICS_COVERED]] = !{!"sanmd_covered!C", ![[ATOMICS_COVERED_AUX:[0-9]+]]}
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// ATOMICS: ![[ATOMICS_COVERED_AUX]] = !{i64 1}
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// ATOMICS: ![[ATOMIC_OP]] = !{!"sanmd_atomics!C"}
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