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| author | Dan Gohman <gohman@apple.com> | 2008-09-24 00:06:15 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-09-24 00:06:15 +0000 |
| commit | 3e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112 (patch) | |
| tree | d572e85f18edc9d97f5b8cbaa5d6395fdd31801d /include/llvm/CodeGen | |
| parent | 20bcaff6a7f93a9894f7233c449b016bafe93b26 (diff) | |
| download | external_llvm-3e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112.zip external_llvm-3e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112.tar.gz external_llvm-3e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112.tar.bz2 | |
Add a method to MachineInstr for testing whether it makes
any volatile memory references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56528 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen')
| -rw-r--r-- | include/llvm/CodeGen/MachineInstr.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h index 3171af9..8efea62 100644 --- a/include/llvm/CodeGen/MachineInstr.h +++ b/include/llvm/CodeGen/MachineInstr.h @@ -250,8 +250,16 @@ public: /// the instruction's location and its intended destination. bool isSafeToMove(const TargetInstrInfo *TII, bool &SawStore); + /// isSafeToReMat - Return true if it's safe to rematerialize the specified + /// instruction which defined the specified register instead of copying it. bool isSafeToReMat(const TargetInstrInfo *TII, unsigned DstReg); + /// hasVolatileMemoryRef - Return true if this instruction may have a + /// volatile memory reference, or if the information describing the + /// memory reference is not available. Return false if it is known to + /// have no volatile memory references. + bool hasVolatileMemoryRef() const; + // // Debugging support // |