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Label the existing atomic functions as 32-bit specific, and add a 64-bit one that will be useful in

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the near future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73971 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2009-06-23 18:01:04 +00:00
parent bb3231f7c4
commit 0de9953e88
4 changed files with 32 additions and 19 deletions
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15
include/llvm/System/Atomic.h
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@ -20,13 +20,14 @@ namespace llvm {
namespace sys {
void MemoryFence();
typedef uint32_t cas_flag;
cas_flag CompareAndSwap(volatile cas_flag* ptr,
cas_flag new_value,
cas_flag old_value);
cas_flag AtomicIncrement(volatile cas_flag* ptr);
cas_flag AtomicDecrement(volatile cas_flag* ptr);
cas_flag AtomicAdd(volatile cas_flag* ptr, cas_flag val);
uint32_t CompareAndSwap32(volatile uint32_t* ptr,
uint32_t new_value,
uint32_t old_value);
uint32_t AtomicIncrement32(volatile uint32_t* ptr);
uint32_t AtomicDecrement32(volatile uint32_t* ptr);
uint32_t AtomicAdd32(volatile uint32_t* ptr, uint32_t val);
uint64_t AtomicAdd64(volatile uint64_t* ptr, uint64_t val);
}
}

8
include/llvm/Type.h
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@ -103,7 +103,7 @@ private:
/// has no AbstractTypeUsers, the type is deleted. This is only sensical for
/// derived types.
///
mutable sys::cas_flag RefCount;
mutable uint32_t RefCount;
const Type *getForwardedTypeInternal() const;
@ -338,7 +338,7 @@ public:
void addRef() const {
assert(isAbstract() && "Cannot add a reference to a non-abstract type!");
sys::AtomicIncrement(&RefCount);
sys::AtomicIncrement32(&RefCount);
}
void dropRef() const {
@ -347,8 +347,8 @@ public:
// If this is the last PATypeHolder using this object, and there are no
// PATypeHandles using it, the type is dead, delete it now.
sys::cas_flag OldCount = sys::AtomicDecrement(&RefCount);
if (OldCount == 0 && AbstractTypeUsers.empty())
uint32_t Count = sys::AtomicDecrement32(&RefCount);
if (Count == 0 && AbstractTypeUsers.empty())
this->destroy();
}

26
lib/System/Atomic.cpp
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@ -35,11 +35,11 @@ void sys::MemoryFence() {
#endif
}
sys::cas_flag sys::CompareAndSwap(volatile sys::cas_flag* ptr,
sys::cas_flag new_value,
sys::cas_flag old_value) {
uint32_t sys::CompareAndSwap32(volatile uint32_t* ptr,
uint32_t new_value,
uint32_t old_value) {
#if LLVM_MULTITHREADED==0
sys::cas_flag result = *ptr;
uint32_t result = *ptr;
if (result == old_value)
*ptr = new_value;
return result;
@ -52,7 +52,7 @@ sys::cas_flag sys::CompareAndSwap(volatile sys::cas_flag* ptr,
#endif
}
sys::cas_flag sys::AtomicIncrement(volatile sys::cas_flag* ptr) {
uint32_t sys::AtomicIncrement32(volatile uint32_t* ptr) {
#if LLVM_MULTITHREADED==0
++(*ptr);
return *ptr;
@ -65,7 +65,7 @@ sys::cas_flag sys::AtomicIncrement(volatile sys::cas_flag* ptr) {
#endif
}
sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) {
uint32_t sys::AtomicDecrement32(volatile uint32_t* ptr) {
#if LLVM_MULTITHREADED==0
--(*ptr);
return *ptr;
@ -78,7 +78,7 @@ sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) {
#endif
}
sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) {
uint32_t sys::AtomicAdd32(volatile uint32_t* ptr, uint32_t val) {
#if LLVM_MULTITHREADED==0
*ptr += val;
return *ptr;
@ -91,4 +91,16 @@ sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) {
#endif
}
uint64_t sys::AtomicAdd64(volatile uint64_t* ptr, uint64_t val) {
#if LLVM_MULTITHREADED==0
*ptr += val;
return *ptr;
#elif defined(__GNUC__)
return __sync_add_and_fetch(ptr, val);
#elif defined(_MSC_VER)
return InterlockedAdd64(ptr, val);
#else
# error No atomic add implementation for your platform!
#endif
}

2
lib/VMCore/Mangler.cpp
View File

@ -168,7 +168,7 @@ std::string Mangler::getValueName(const GlobalValue *GV, const char * Suffix) {
static uint32_t GlobalID = 0;
unsigned OldID = GlobalID;
sys::AtomicIncrement(&GlobalID);
sys::AtomicIncrement32(&GlobalID);
Name = "__unnamed_" + utostr(TypeUniqueID) + "_" + utostr(OldID);
} else {