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Factor out the call-once implementation into its own macro.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116832 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2010-10-19 18:02:06 +00:00
parent 4cccb87b4d
commit 62d4ced64c
1 changed files with 21 additions and 70 deletions
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91
include/llvm/PassSupport.h
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@ -129,6 +129,22 @@ private:
PassInfo(const PassInfo &); // do not implement PassInfo(const PassInfo &); // do not implement
}; };
#define CALL_ONCE_INITIALIZATION(function) \
static volatile sys::cas_flag initialized = 0; \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
function(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
#define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \ #define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
static void* initialize##passName##PassOnce(PassRegistry &Registry) { \ static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \ PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
@ -137,20 +153,7 @@ private:
return PI; \ return PI; \
} \ } \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
static volatile sys::cas_flag initialized = 0; \ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
initialize##passName##PassOnce(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
} }
#define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \ #define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \
@ -168,20 +171,7 @@ private:
return PI; \ return PI; \
} \ } \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
static volatile sys::cas_flag initialized = 0; \ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
initialize##passName##PassOnce(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
} }
template<typename PassName> template<typename PassName>
@ -266,20 +256,7 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
return AI; \ return AI; \
} \ } \
void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \ void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \
static volatile sys::cas_flag initialized = 0; \ CALL_ONCE_INITIALIZATION(initialize##agName##AnalysisGroupOnce) \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
initialize##agName##AnalysisGroupOnce(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
} }
@ -295,20 +272,7 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
return AI; \ return AI; \
} \ } \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
static volatile sys::cas_flag initialized = 0; \ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
initialize##passName##PassOnce(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
} }
@ -326,20 +290,7 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
return AI; \ return AI; \
} \ } \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \ void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
static volatile sys::cas_flag initialized = 0; \ CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
sys::cas_flag old_val = sys::CompareAndSwap(&initialized, 1, 0); \
if (old_val == 0) { \
initialize##passName##PassOnce(Registry); \
sys::MemoryFence(); \
initialized = 2; \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
} }
//===--------------------------------------------------------------------------- //===---------------------------------------------------------------------------