[compiler-rt] b3ca4f3 - [Darwin] Remove obsolete OS version checks
Julian Lettner via llvm-commits
llvm-commits at lists.llvm.org
Wed May 20 19:47:23 PDT 2020
Author: Julian Lettner
Date: 2020-05-20T19:46:41-07:00
New Revision: b3ca4f34311b87345cf87bfdd0343045eed22f5c
URL: https://github.com/llvm/llvm-project/commit/b3ca4f34311b87345cf87bfdd0343045eed22f5c
DIFF: https://github.com/llvm/llvm-project/commit/b3ca4f34311b87345cf87bfdd0343045eed22f5c.diff
LOG: [Darwin] Remove obsolete OS version checks
The oldest supported deployment target currently is 10.7 [1]. We can
remove a few outdated checks.
[1] https://github.com/llvm/llvm-project/blob/3db893b3712a5cc98ac0dbc88e08df70069be216/compiler-rt/cmake/config-ix.cmake#L397
Reviewed By: delcypher
Differential Revision: https://reviews.llvm.org/D79958
Added:
Modified:
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
compiler-rt/lib/sanitizer_common/sanitizer_mac.h
compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc
Removed:
################################################################################
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
index 0ca86dee69a3..57f8b2d29442 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -134,11 +134,7 @@ extern const short *_tolower_tab_;
// Platform-specific options.
#if SANITIZER_MAC
-namespace __sanitizer {
-bool PlatformHasDifferentMemcpyAndMemmove();
-}
-#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE \
- (__sanitizer::PlatformHasDifferentMemcpyAndMemmove())
+#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE false
#elif SANITIZER_WINDOWS64
#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE false
#else
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
index 1d767f6021e3..85fc21a96232 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
@@ -629,8 +629,6 @@ MacosVersion GetMacosVersionInternal() {
if (*p != '.') return MACOS_VERSION_UNKNOWN;
switch (major) {
- case 9: return MACOS_VERSION_LEOPARD;
- case 10: return MACOS_VERSION_SNOW_LEOPARD;
case 11: return MACOS_VERSION_LION;
case 12: return MACOS_VERSION_MOUNTAIN_LION;
case 13: return MACOS_VERSION_MAVERICKS;
@@ -662,15 +660,6 @@ MacosVersion GetMacosVersion() {
return result;
}
-bool PlatformHasDifferentMemcpyAndMemmove() {
- // On OS X 10.7 memcpy() and memmove() are both resolved
- // into memmove$VARIANT$sse42.
- // See also https://github.com/google/sanitizers/issues/34.
- // TODO(glider): need to check dynamically that memcpy() and memmove() are
- // actually the same function.
- return GetMacosVersion() == MACOS_VERSION_SNOW_LEOPARD;
-}
-
uptr GetRSS() {
struct task_basic_info info;
unsigned count = TASK_BASIC_INFO_COUNT;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.h b/compiler-rt/lib/sanitizer_common/sanitizer_mac.h
index 2257883084ea..2226fcb5d03a 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.h
@@ -33,9 +33,7 @@ struct MemoryMappingLayoutData {
enum MacosVersion {
MACOS_VERSION_UNINITIALIZED = 0,
MACOS_VERSION_UNKNOWN,
- MACOS_VERSION_LEOPARD,
- MACOS_VERSION_SNOW_LEOPARD,
- MACOS_VERSION_LION,
+ MACOS_VERSION_LION, // macOS 10.7; oldest currently supported
MACOS_VERSION_MOUNTAIN_LION,
MACOS_VERSION_MAVERICKS,
MACOS_VERSION_YOSEMITE,
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc b/compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc
index 11adbe5c25b4..647bcdfe105e 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_malloc_mac.inc
@@ -61,12 +61,10 @@ INTERCEPTOR(malloc_zone_t *, malloc_create_zone,
malloc_zone_t *new_zone = (malloc_zone_t *)p;
internal_memcpy(new_zone, &sanitizer_zone, sizeof(sanitizer_zone));
new_zone->zone_name = NULL; // The name will be changed anyway.
- if (GetMacosVersion() >= MACOS_VERSION_LION) {
- // Prevent the client app from overwriting the zone contents.
- // Library functions that need to modify the zone will set PROT_WRITE on it.
- // This matches the behavior of malloc_create_zone() on OSX 10.7 and higher.
- mprotect(new_zone, allocated_size, PROT_READ);
- }
+ // Prevent the client app from overwriting the zone contents.
+ // Library functions that need to modify the zone will set PROT_WRITE on it.
+ // This matches the behavior of malloc_create_zone() on OSX 10.7 and higher.
+ mprotect(new_zone, allocated_size, PROT_READ);
// We're explicitly *NOT* registering the zone.
return new_zone;
}
@@ -75,11 +73,9 @@ INTERCEPTOR(void, malloc_destroy_zone, malloc_zone_t *zone) {
COMMON_MALLOC_ENTER();
// We don't need to do anything here. We're not registering new zones, so we
// don't to unregister. Just un-mprotect and free() the zone.
- if (GetMacosVersion() >= MACOS_VERSION_LION) {
- uptr page_size = GetPageSizeCached();
- uptr allocated_size = RoundUpTo(sizeof(sanitizer_zone), page_size);
- mprotect(zone, allocated_size, PROT_READ | PROT_WRITE);
- }
+ uptr page_size = GetPageSizeCached();
+ uptr allocated_size = RoundUpTo(sizeof(sanitizer_zone), page_size);
+ mprotect(zone, allocated_size, PROT_READ | PROT_WRITE);
if (zone->zone_name) {
COMMON_MALLOC_FREE((void *)zone->zone_name);
}
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