[compiler-rt] [compiler-rt][ctx_instr] Add `ctx_profile` component (PR #89304)
Mircea Trofin via llvm-commits
llvm-commits at lists.llvm.org
Mon Apr 22 08:50:59 PDT 2024
https://github.com/mtrofin updated https://github.com/llvm/llvm-project/pull/89304
>From 77c8ad298a7e3815714cf8a19a22bdd04aca62d4 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Tue, 19 Mar 2024 20:16:35 -0700
Subject: [PATCH 1/4] [compiler-rt][ctx_instr] Add `ctx_profile` component
Add the component structure for contextual instrumented PGO and the bump allocator + test.
(Tracking Issue: #89287)
---
compiler-rt/CMakeLists.txt | 2 +
.../cmake/Modules/AllSupportedArchDefs.cmake | 1 +
compiler-rt/cmake/config-ix.cmake | 11 +++
compiler-rt/lib/CMakeLists.txt | 4 ++
compiler-rt/lib/ctx_profile/CMakeLists.txt | 28 ++++++++
.../lib/ctx_profile/CtxInstrProfiling.cpp | 38 ++++++++++
.../lib/ctx_profile/CtxInstrProfiling.h | 55 +++++++++++++++
.../lib/ctx_profile/tests/CMakeLists.txt | 70 +++++++++++++++++++
.../tests/CtxInstrProfilingTest.cpp | 22 ++++++
compiler-rt/lib/ctx_profile/tests/driver.cpp | 14 ++++
10 files changed, 245 insertions(+)
create mode 100644 compiler-rt/lib/ctx_profile/CMakeLists.txt
create mode 100644 compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
create mode 100644 compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
create mode 100644 compiler-rt/lib/ctx_profile/tests/CMakeLists.txt
create mode 100644 compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
create mode 100644 compiler-rt/lib/ctx_profile/tests/driver.cpp
diff --git a/compiler-rt/CMakeLists.txt b/compiler-rt/CMakeLists.txt
index 8649507ce1c79b..6ce451e3cac2e3 100644
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@@ -50,6 +50,8 @@ option(COMPILER_RT_BUILD_LIBFUZZER "Build libFuzzer" ON)
mark_as_advanced(COMPILER_RT_BUILD_LIBFUZZER)
option(COMPILER_RT_BUILD_PROFILE "Build profile runtime" ON)
mark_as_advanced(COMPILER_RT_BUILD_PROFILE)
+option(COMPILER_RT_BUILD_CTX_PROFILE "Build ctx profile runtime" ON)
+mark_as_advanced(COMPILER_RT_BUILD_CTX_PROFILE)
option(COMPILER_RT_BUILD_MEMPROF "Build memory profiling runtime" ON)
mark_as_advanced(COMPILER_RT_BUILD_MEMPROF)
option(COMPILER_RT_BUILD_XRAY_NO_PREINIT "Build xray with no preinit patching" OFF)
diff --git a/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake b/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
index 423171532c2028..2fe06273a814c7 100644
--- a/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
+++ b/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
@@ -66,6 +66,7 @@ set(ALL_MEMPROF_SUPPORTED_ARCH ${X86_64})
set(ALL_PROFILE_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${PPC32} ${PPC64}
${MIPS32} ${MIPS64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON}
${RISCV32} ${RISCV64} ${LOONGARCH64})
+set(ALL_CTX_PROFILE_SUPPORTED_ARCH ${X86_64})
set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X}
${LOONGARCH64} ${RISCV64})
set(ALL_UBSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
diff --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index b281ac64f5d5c7..ba740af9e1d60f 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -632,6 +632,9 @@ if(APPLE)
list_intersect(PROFILE_SUPPORTED_ARCH
ALL_PROFILE_SUPPORTED_ARCH
SANITIZER_COMMON_SUPPORTED_ARCH)
+ list_intersect(CTX_PROFILE_SUPPORTED_ARCH
+ ALL_CTX_PROFILE_SUPPORTED_ARCH
+ SANITIZER_COMMON_SUPPORTED_ARCH)
list_intersect(TSAN_SUPPORTED_ARCH
ALL_TSAN_SUPPORTED_ARCH
SANITIZER_COMMON_SUPPORTED_ARCH)
@@ -678,6 +681,7 @@ else()
filter_available_targets(HWASAN_SUPPORTED_ARCH ${ALL_HWASAN_SUPPORTED_ARCH})
filter_available_targets(MEMPROF_SUPPORTED_ARCH ${ALL_MEMPROF_SUPPORTED_ARCH})
filter_available_targets(PROFILE_SUPPORTED_ARCH ${ALL_PROFILE_SUPPORTED_ARCH})
+ filter_available_targets(CTX_PROFILE_SUPPORTED_ARCH ${ALL_CTX_PROFILE_SUPPORTED_ARCH})
filter_available_targets(TSAN_SUPPORTED_ARCH ${ALL_TSAN_SUPPORTED_ARCH})
filter_available_targets(UBSAN_SUPPORTED_ARCH ${ALL_UBSAN_SUPPORTED_ARCH})
filter_available_targets(SAFESTACK_SUPPORTED_ARCH
@@ -803,6 +807,13 @@ else()
set(COMPILER_RT_HAS_PROFILE FALSE)
endif()
+if (COMPILER_RT_HAS_SANITIZER_COMMON AND CTX_PROFILE_SUPPORTED_ARCH AND
+ OS_NAME MATCHES "Linux")
+ set(COMPILER_RT_HAS_CTX_PROFILE TRUE)
+else()
+ set(COMPILER_RT_HAS_CTX_PROFILE FALSE)
+endif()
+
if (COMPILER_RT_HAS_SANITIZER_COMMON AND TSAN_SUPPORTED_ARCH)
if (OS_NAME MATCHES "Linux|Darwin|FreeBSD|NetBSD")
set(COMPILER_RT_HAS_TSAN TRUE)
diff --git a/compiler-rt/lib/CMakeLists.txt b/compiler-rt/lib/CMakeLists.txt
index 43ba9a102c8487..f9e96563b88090 100644
--- a/compiler-rt/lib/CMakeLists.txt
+++ b/compiler-rt/lib/CMakeLists.txt
@@ -51,6 +51,10 @@ if(COMPILER_RT_BUILD_PROFILE AND COMPILER_RT_HAS_PROFILE)
compiler_rt_build_runtime(profile)
endif()
+if(COMPILER_RT_BUILD_CTX_PROFILE AND COMPILER_RT_HAS_CTX_PROFILE)
+ compiler_rt_build_runtime(ctx_profile)
+endif()
+
if(COMPILER_RT_BUILD_XRAY)
compiler_rt_build_runtime(xray)
endif()
diff --git a/compiler-rt/lib/ctx_profile/CMakeLists.txt b/compiler-rt/lib/ctx_profile/CMakeLists.txt
new file mode 100644
index 00000000000000..621b7d30b76d41
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/CMakeLists.txt
@@ -0,0 +1,28 @@
+add_compiler_rt_component(ctx_profile)
+
+set(CTX_PROFILE_SOURCES
+ CtxInstrProfiling.cpp
+ )
+
+set(CTX_PROFILE_HEADERS
+ CtxInstrProfiling.h
+ )
+
+include_directories(..)
+include_directories(../../include)
+
+# We don't use the C++ Standard Library here, so avoid including it by mistake.
+append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ EXTRA_FLAGS)
+
+add_compiler_rt_runtime(clang_rt.ctx_profile
+ STATIC
+ ARCHS ${CTX_PROFILE_SUPPORTED_ARCH}
+ OBJECT_LIBS RTSanitizerCommon RTSanitizerCommonLibc
+ CFLAGS ${EXTRA_FLAGS}
+ SOURCES ${CTX_PROFILE_SOURCES}
+ ADDITIONAL_HEADERS ${CTX_PROFILE_HEADERS}
+ PARENT_TARGET ctx_profile)
+
+if(COMPILER_RT_INCLUDE_TESTS)
+ add_subdirectory(tests)
+endif()
diff --git a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
new file mode 100644
index 00000000000000..dd90e905cc692e
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
@@ -0,0 +1,38 @@
+//===- CtxInstrProfiling.cpp - contextual instrumented PGO000000 ----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "CtxInstrProfiling.h"
+#include "sanitizer_common/sanitizer_allocator_internal.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_dense_map.h"
+#include "sanitizer_common/sanitizer_mutex.h"
+#include "sanitizer_common/sanitizer_placement_new.h"
+#include "sanitizer_common/sanitizer_thread_safety.h"
+
+#include <assert.h>
+
+using namespace __ctx_profile;
+
+Arena *Arena::allocateNewArena(size_t Size, Arena *Prev) {
+ assert(!Prev || Prev->Next == nullptr);
+ Arena *NewArena =
+ new (__sanitizer::InternalAlloc(Size + sizeof(Arena))) Arena(Size);
+ if (Prev)
+ Prev->Next = NewArena;
+ return NewArena;
+}
+
+void Arena::freeArenaList(Arena *&A) {
+ assert(A);
+ for (auto *I = A; I != nullptr;) {
+ auto *Current = I;
+ I = I->Next;
+ __sanitizer::InternalFree(Current);
+ }
+ A = nullptr;
+}
diff --git a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
new file mode 100644
index 00000000000000..0ad4ef80cd70fe
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
@@ -0,0 +1,55 @@
+/*===- CtxInstrProfiling.h- Contextual instrumentation-based PGO ---------===*\
+|*
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+|* See https://llvm.org/LICENSE.txt for license information.
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+|*
+\*===----------------------------------------------------------------------===*/
+
+#ifndef CTX_PROFILE_CTXINSTRPROFILING_H_
+#define CTX_PROFILE_CTXINSTRPROFILING_H_
+
+#include <sanitizer/common_interface_defs.h>
+
+namespace __ctx_profile {
+
+/// Arena (bump allocator) forming a linked list. Intentionally not thread safe.
+/// Allocation and de-allocation happen using sanitizer APIs. We make that
+/// explicit.
+class Arena final {
+public:
+ // When allocating a new Arena, optionally specify an existing one to append
+ // to, assumed to be the last in the Arena list. We only need to support
+ // appending to the arena list.
+ static Arena *allocateNewArena(size_t Size, Arena *Prev = nullptr);
+ static void freeArenaList(Arena*& A);
+
+ uint64_t size() const { return Size; }
+
+ // Allocate S bytes or return nullptr if we don't have that many available.
+ char *tryBumpAllocate(size_t S) {
+ if (Pos + S > Size)
+ return nullptr;
+ Pos += S;
+ return start() + (Pos - S);
+ }
+
+ Arena *next() const { return Next; }
+
+ // the beginning of allocatable memory.
+ const char *start() const { return const_cast<Arena *>(this)->start(); }
+ const char *pos() const { return start() + Pos; }
+
+private:
+ explicit Arena(uint32_t Size) : Size(Size) {}
+ ~Arena() = delete;
+
+ char *start() { return reinterpret_cast<char *>(&this[1]); }
+
+ Arena *Next = nullptr;
+ uint64_t Pos = 0;
+ const uint64_t Size;
+};
+
+}
+#endif // CTX_PROFILE_CTXINSTRPROFILING_H_
diff --git a/compiler-rt/lib/ctx_profile/tests/CMakeLists.txt b/compiler-rt/lib/ctx_profile/tests/CMakeLists.txt
new file mode 100644
index 00000000000000..93b41b838445d1
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/tests/CMakeLists.txt
@@ -0,0 +1,70 @@
+include(CheckCXXCompilerFlag)
+include(CompilerRTCompile)
+include(CompilerRTLink)
+
+set(CTX_PROFILE_UNITTEST_CFLAGS
+ ${COMPILER_RT_UNITTEST_CFLAGS}
+ ${COMPILER_RT_GTEST_CFLAGS}
+ ${COMPILER_RT_GMOCK_CFLAGS}
+ ${SANITIZER_TEST_CXX_CFLAGS}
+ -I${COMPILER_RT_SOURCE_DIR}/lib/
+ -DSANITIZER_COMMON_NO_REDEFINE_BUILTINS
+ -O2
+ -g
+ -fno-rtti
+ -Wno-pedantic
+ -fno-omit-frame-pointer)
+
+# Suppress warnings for gmock variadic macros for clang and gcc respectively.
+append_list_if(SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG -Wno-gnu-zero-variadic-macro-arguments CTX_PROFILE_UNITTEST_CFLAGS)
+append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros CTX_PROFILE_UNITTEST_CFLAGS)
+
+file(GLOB PROFILE_HEADERS ../*.h)
+
+set(CTX_PROFILE_SOURCES
+ ../CtxInstrProfiling.cpp)
+
+set(CTX_PROFILE_UNITTESTS
+ CtxInstrProfilingTest.cpp
+ driver.cpp)
+
+include_directories(../../../include)
+
+set(CTX_PROFILE_UNIT_TEST_HEADERS
+ ${CTX_PROFILE_HEADERS})
+
+set(CTX_PROFILE_UNITTEST_LINK_FLAGS
+ ${COMPILER_RT_UNITTEST_LINK_FLAGS})
+
+list(APPEND CTX_PROFILE_UNITTEST_LINK_FLAGS -pthread)
+
+set(CTX_PROFILE_UNITTEST_LINK_LIBRARIES
+ ${COMPILER_RT_UNWINDER_LINK_LIBS}
+ ${SANITIZER_TEST_CXX_LIBRARIES})
+list(APPEND CTX_PROFILE_UNITTEST_LINK_LIBRARIES "dl")
+
+if(COMPILER_RT_DEFAULT_TARGET_ARCH IN_LIST CTX_PROFILE_SUPPORTED_ARCH)
+ # Profile unit tests are only run on the host machine.
+ set(arch ${COMPILER_RT_DEFAULT_TARGET_ARCH})
+
+ add_executable(CtxProfileUnitTests
+ ${CTX_PROFILE_UNITTESTS}
+ ${COMPILER_RT_GTEST_SOURCE}
+ ${COMPILER_RT_GMOCK_SOURCE}
+ ${CTX_PROFILE_SOURCES}
+ $<TARGET_OBJECTS:RTSanitizerCommon.${arch}>
+ $<TARGET_OBJECTS:RTSanitizerCommonCoverage.${arch}>
+ $<TARGET_OBJECTS:RTSanitizerCommonLibc.${arch}>
+ $<TARGET_OBJECTS:RTSanitizerCommonSymbolizer.${arch}>
+ $<TARGET_OBJECTS:RTSanitizerCommonSymbolizerInternal.${arch}>)
+ set_target_compile_flags(CtxProfileUnitTests ${CTX_PROFILE_UNITTEST_CFLAGS})
+ set_target_link_flags(CtxProfileUnitTests ${CTX_PROFILE_UNITTEST_LINK_FLAGS})
+ target_link_libraries(CtxProfileUnitTests ${CTX_PROFILE_UNITTEST_LINK_LIBRARIES})
+
+ if (TARGET cxx-headers OR HAVE_LIBCXX)
+ add_dependencies(CtxProfileUnitTests cxx-headers)
+ endif()
+
+ set_target_properties(CtxProfileUnitTests PROPERTIES
+ RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+endif()
diff --git a/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp b/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
new file mode 100644
index 00000000000000..1e7ddfadd898a7
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
@@ -0,0 +1,22 @@
+#include "../CtxInstrProfiling.h"
+#include "gtest/gtest.h"
+
+using namespace __ctx_profile;
+
+TEST(ArenaTest, Basic) {
+ Arena * A = Arena::allocateNewArena(1024);
+ EXPECT_EQ(A->size(), 1024U);
+ EXPECT_EQ(A->next(), nullptr);
+
+ auto *M1 = A->tryBumpAllocate(1020);
+ EXPECT_NE(M1, nullptr);
+ auto *M2 = A->tryBumpAllocate(4);
+ EXPECT_NE(M2, nullptr);
+ EXPECT_EQ(M1 + 1020, M2);
+ EXPECT_EQ(A->tryBumpAllocate(1), nullptr);
+ Arena *A2 = Arena::allocateNewArena(2024, A);
+ EXPECT_EQ(A->next(), A2);
+ EXPECT_EQ(A2->next(), nullptr);
+ Arena::freeArenaList(A);
+ EXPECT_EQ(A, nullptr);
+}
diff --git a/compiler-rt/lib/ctx_profile/tests/driver.cpp b/compiler-rt/lib/ctx_profile/tests/driver.cpp
new file mode 100644
index 00000000000000..b402cec1126b33
--- /dev/null
+++ b/compiler-rt/lib/ctx_profile/tests/driver.cpp
@@ -0,0 +1,14 @@
+//===-- driver.cpp ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+
+int main(int argc, char **argv) {
+ testing::InitGoogleTest(&argc, argv);
+ return RUN_ALL_TESTS();
+}
>From 385c0cb8df55927a688cacd90a99d7ab0fae60ca Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Fri, 19 Apr 2024 03:39:48 +0200
Subject: [PATCH 2/4] clang-format fixes
---
compiler-rt/lib/ctx_profile/CtxInstrProfiling.h | 4 ++--
compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
index 0ad4ef80cd70fe..c1789c32a64c25 100644
--- a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
+++ b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.h
@@ -22,7 +22,7 @@ class Arena final {
// to, assumed to be the last in the Arena list. We only need to support
// appending to the arena list.
static Arena *allocateNewArena(size_t Size, Arena *Prev = nullptr);
- static void freeArenaList(Arena*& A);
+ static void freeArenaList(Arena *&A);
uint64_t size() const { return Size; }
@@ -51,5 +51,5 @@ class Arena final {
const uint64_t Size;
};
-}
+} // namespace __ctx_profile
#endif // CTX_PROFILE_CTXINSTRPROFILING_H_
diff --git a/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp b/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
index 1e7ddfadd898a7..44f37d25763206 100644
--- a/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
+++ b/compiler-rt/lib/ctx_profile/tests/CtxInstrProfilingTest.cpp
@@ -4,11 +4,11 @@
using namespace __ctx_profile;
TEST(ArenaTest, Basic) {
- Arena * A = Arena::allocateNewArena(1024);
+ Arena *A = Arena::allocateNewArena(1024);
EXPECT_EQ(A->size(), 1024U);
EXPECT_EQ(A->next(), nullptr);
- auto *M1 = A->tryBumpAllocate(1020);
+ auto *M1 = A->tryBumpAllocate(1020);
EXPECT_NE(M1, nullptr);
auto *M2 = A->tryBumpAllocate(4);
EXPECT_NE(M2, nullptr);
>From 020468f77a0c9eb2e5a47878fed71a90bb3cceb1 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Fri, 19 Apr 2024 22:07:03 +0200
Subject: [PATCH 3/4] address comments
---
compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
index dd90e905cc692e..29c5976e828933 100644
--- a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
+++ b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
@@ -1,4 +1,4 @@
-//===- CtxInstrProfiling.cpp - contextual instrumented PGO000000 ----------===//
+//===- CtxInstrProfiling.cpp - contextual instrumented PGO ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
>From a5576e2839cb25563d62c2ebc772de312a7ea3c2 Mon Sep 17 00:00:00 2001
From: Mircea Trofin <mtrofin at google.com>
Date: Mon, 22 Apr 2024 17:46:52 +0200
Subject: [PATCH 4/4] added a fixme for the mem allocator APIs.
---
compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
index 29c5976e828933..7620ce92f7ebde 100644
--- a/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
+++ b/compiler-rt/lib/ctx_profile/CtxInstrProfiling.cpp
@@ -18,6 +18,8 @@
using namespace __ctx_profile;
+// FIXME(mtrofin): use malloc / mmap instead of sanitizer common APIs to reduce
+// the dependency on the latter.
Arena *Arena::allocateNewArena(size_t Size, Arena *Prev) {
assert(!Prev || Prev->Next == nullptr);
Arena *NewArena =
More information about the llvm-commits
mailing list