diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.h | 33 |
1 files changed, 4 insertions, 29 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.h b/llvm/lib/Target/X86/X86InstrInfo.h index 8d2c592be43..98e08bbb9bf 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.h +++ b/llvm/lib/Target/X86/X86InstrInfo.h @@ -314,34 +314,6 @@ public: bool findCommutedOpIndices(MachineInstr &MI, unsigned &SrcOpIdx1, unsigned &SrcOpIdx2) const override; - /// Returns true if the routine could find two commutable operands - /// in the given FMA instruction \p MI. Otherwise, returns false. - /// - /// \p SrcOpIdx1 and \p SrcOpIdx2 are INPUT and OUTPUT arguments. - /// The output indices of the commuted operands are returned in these - /// arguments. Also, the input values of these arguments may be preset either - /// to indices of operands that must be commuted or be equal to a special - /// value 'CommuteAnyOperandIndex' which means that the corresponding - /// operand index is not set and this method is free to pick any of - /// available commutable operands. - /// The parameter \p FMA3Group keeps the reference to the group of relative - /// FMA3 opcodes including register/memory forms of 132/213/231 opcodes. - /// - /// For example, calling this method this way: - /// unsigned Idx1 = 1, Idx2 = CommuteAnyOperandIndex; - /// findFMA3CommutedOpIndices(MI, Idx1, Idx2, FMA3Group); - /// can be interpreted as a query asking if the operand #1 can be swapped - /// with any other available operand (e.g. operand #2, operand #3, etc.). - /// - /// The returned FMA opcode may differ from the opcode in the given MI. - /// For example, commuting the operands #1 and #3 in the following FMA - /// FMA213 #1, #2, #3 - /// results into instruction with adjusted opcode: - /// FMA231 #3, #2, #1 - bool findFMA3CommutedOpIndices(const MachineInstr &MI, unsigned &SrcOpIdx1, - unsigned &SrcOpIdx2, - const X86InstrFMA3Group &FMA3Group) const; - /// Returns an adjusted FMA opcode that must be used in FMA instruction that /// performs the same computations as the given \p MI but which has the /// operands \p SrcOpIdx1 and \p SrcOpIdx2 commuted. @@ -664,9 +636,12 @@ private: /// findThreeSrcCommutedOpIndices(MI, Op1, Op2); /// can be interpreted as a query asking to find an operand that would be /// commutable with the operand#1. + /// + /// If IsIntrinsic is set, operand 1 will be ignored for commuting. bool findThreeSrcCommutedOpIndices(const MachineInstr &MI, unsigned &SrcOpIdx1, - unsigned &SrcOpIdx2) const; + unsigned &SrcOpIdx2, + bool IsIntrinsic = false) const; }; } // namespace llvm |