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Revert "[LPM] Replace the CALL_ONCE_... macro in the legacy pass manager with the new llvm::call_once facility."

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Fallback path doesn't compile. This reverts commit r271652.

llvm-svn: 271657
This commit is contained in:
Benjamin Kramer 2016-06-03 10:36:10 +00:00
parent 9ac3c4e1c9
commit 82ecd1ae74
2 changed files with 26 additions and 20 deletions
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4
include/llvm/CodeGen/Passes.h
View File

@ -377,10 +377,8 @@ namespace llvm {
Registry.registerPass(*PI, true); \
return PI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##passName##PassFlag); \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
call_once(Initialize##passName##PassFlag, initialize##passName##PassOnce, \
std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
}
/// This initializer registers TargetMachine constructor, so the pass being

42
include/llvm/PassSupport.h
View File

@ -26,13 +26,31 @@
#include "llvm/PassInfo.h"
#include "llvm/PassRegistry.h"
#include "llvm/Support/Atomic.h"
#include "llvm/Support/Threading.h"
#include <functional>
namespace llvm {
class TargetMachine;
#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(); \
TsanIgnoreWritesBegin(); \
TsanHappensBefore(&initialized); \
initialized = 2; \
TsanIgnoreWritesEnd(); \
} else { \
sys::cas_flag tmp = initialized; \
sys::MemoryFence(); \
while (tmp != 2) { \
tmp = initialized; \
sys::MemoryFence(); \
} \
} \
TsanHappensAfter(&initialized);
#define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
static void *initialize##passName##PassOnce(PassRegistry &Registry) { \
PassInfo *PI = new PassInfo( \
@ -41,10 +59,8 @@ class TargetMachine;
Registry.registerPass(*PI, true); \
return PI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##passName##PassFlag); \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
call_once(Initialize##passName##PassFlag, initialize##passName##PassOnce, \
std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
}
#define INITIALIZE_PASS_BEGIN(passName, arg, name, cfg, analysis) \
@ -61,10 +77,8 @@ class TargetMachine;
Registry.registerPass(*PI, true); \
return PI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##passName##PassFlag); \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
call_once(Initialize##passName##PassFlag, initialize##passName##PassOnce, \
std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
}
#define INITIALIZE_PASS_WITH_OPTIONS(PassName, Arg, Name, Cfg, Analysis) \
@ -152,10 +166,8 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
Registry.registerAnalysisGroup(&agName::ID, 0, *AI, false, true); \
return AI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##agName##AnalysisGroupFlag); \
void llvm::initialize##agName##AnalysisGroup(PassRegistry &Registry) { \
call_once(Initialize##agName##AnalysisGroupFlag, \
initialize##agName##AnalysisGroupOnce, std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##agName##AnalysisGroupOnce) \
}
#define INITIALIZE_AG_PASS(passName, agName, arg, name, cfg, analysis, def) \
@ -172,10 +184,8 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
true); \
return AI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##passName##PassFlag); \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
call_once(Initialize##passName##PassFlag, initialize##passName##PassOnce, \
std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
}
#define INITIALIZE_AG_PASS_BEGIN(passName, agName, arg, n, cfg, analysis, def) \
@ -193,10 +203,8 @@ struct RegisterAnalysisGroup : public RegisterAGBase {
Registry.registerAnalysisGroup(&agName::ID, &passName::ID, *AI, def, true); \
return AI; \
} \
LLVM_DEFINE_ONCE_FLAG(Initialize##passName##PassFlag); \
void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
call_once(Initialize##passName##PassFlag, initialize##passName##PassOnce, \
std::ref(Registry)); \
CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
}
//===---------------------------------------------------------------------------