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| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-12 10:28:10 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-12 10:28:10 +0000 |
| commit | ac168b8bc8773a083a10902f64e4ae57a925aee4 (patch) | |
| tree | f01bc6788d39669344e52a5304fbe7859ebc8702 /lib/Target/SystemZ/SystemZInstrInfo.h | |
| parent | e03a56d62fc623e2f72d623b816f91b293d5904b (diff) | |
| download | llvm-ac168b8bc8773a083a10902f64e4ae57a925aee4.tar.gz llvm-ac168b8bc8773a083a10902f64e4ae57a925aee4.tar.bz2 llvm-ac168b8bc8773a083a10902f64e4ae57a925aee4.tar.xz | |
[SystemZ] Use CLC and IPM to implement memcmp
For now this is restricted to fixed-length comparisons with a length
in the range [1, 256], as for memcpy() and MVC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188163 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/SystemZInstrInfo.h')
| -rw-r--r-- | lib/Target/SystemZ/SystemZInstrInfo.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/SystemZ/SystemZInstrInfo.h b/lib/Target/SystemZ/SystemZInstrInfo.h index 276fd3b7a1..3c4e8af0e6 100644 --- a/lib/Target/SystemZ/SystemZInstrInfo.h +++ b/lib/Target/SystemZ/SystemZInstrInfo.h @@ -129,6 +129,12 @@ public: MachineBasicBlock *FBB, const SmallVectorImpl<MachineOperand> &Cond, DebugLoc DL) const LLVM_OVERRIDE; + bool analyzeCompare(const MachineInstr *MI, unsigned &SrcReg, + unsigned &SrcReg2, int &Mask, int &Value) const + LLVM_OVERRIDE; + bool optimizeCompareInstr(MachineInstr *CmpInstr, unsigned SrcReg, + unsigned SrcReg2, int Mask, int Value, + const MachineRegisterInfo *MRI) const LLVM_OVERRIDE; virtual bool isPredicable(MachineInstr *MI) const LLVM_OVERRIDE; virtual bool isProfitableToIfCvt(MachineBasicBlock &MBB, unsigned NumCycles, unsigned ExtraPredCycles, |