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Initial implementation of 'fence' instruction, the new C++0x-style replacement for llvm.memory.barrier.

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This is just a LangRef entry and reading/writing/memory representation; optimizer+codegen support coming soon.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136009 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2011-07-25 23:16:38 +00:00
parent 5a1cb644c9
commit 47f3513dd5
18 changed files with 392 additions and 32 deletions
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20
include/llvm/Bitcode/LLVMBitCodes.h
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@ -218,6 +218,23 @@ namespace bitc {
PEO_EXACT = 0
};
/// Encoded AtomicOrdering values.
enum AtomicOrderingCodes {
ORDERING_NOTATOMIC = 0,
ORDERING_UNORDERED = 1,
ORDERING_MONOTONIC = 2,
ORDERING_ACQUIRE = 3,
ORDERING_RELEASE = 4,
ORDERING_ACQREL = 5,
ORDERING_SEQCST = 6
};
/// Encoded SynchronizationScope values.
enum AtomicSynchScopeCodes {
SYNCHSCOPE_SINGLETHREAD = 0,
SYNCHSCOPE_CROSSTHREAD = 1
};
// The function body block (FUNCTION_BLOCK_ID) describes function bodies. It
// can contain a constant block (CONSTANTS_BLOCK_ID).
enum FunctionCodes {
@ -266,7 +283,8 @@ namespace bitc {
FUNC_CODE_INST_CALL = 34, // CALL: [attr, fnty, fnid, args...]
FUNC_CODE_DEBUG_LOC = 35 // DEBUG_LOC: [Line,Col,ScopeVal, IAVal]
FUNC_CODE_DEBUG_LOC = 35, // DEBUG_LOC: [Line,Col,ScopeVal, IAVal]
FUNC_CODE_INST_FENCE = 36 // FENCE: [ordering, synchscope]
};
} // End bitc namespace
} // End llvm namespace