diff options
Diffstat (limited to 'contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp b/contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp index 707bfdb..20c4ab1 100644 --- a/contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp +++ b/contrib/llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp @@ -92,6 +92,7 @@ namespace { /// \brief A handle to the branch probability pass. const MachineBranchProbabilityInfo *MBPI; + bool isNewValueJumpCandidate(const MachineInstr *MI) const; }; } // end of anonymous namespace @@ -280,9 +281,9 @@ static bool canCompareBeNewValueJump(const HexagonInstrInfo *QII, return true; } -// Given a compare operator, return a matching New Value Jump -// compare operator. Make sure that MI here is included in -// HexagonInstrInfo.cpp::isNewValueJumpCandidate + +// Given a compare operator, return a matching New Value Jump compare operator. +// Make sure that MI here is included in isNewValueJumpCandidate. static unsigned getNewValueJumpOpcode(MachineInstr *MI, int reg, bool secondRegNewified, MachineBasicBlock *jmpTarget, @@ -341,6 +342,24 @@ static unsigned getNewValueJumpOpcode(MachineInstr *MI, int reg, return taken ? Hexagon::J4_cmpgtui_t_jumpnv_t : Hexagon::J4_cmpgtui_t_jumpnv_nt; + case Hexagon::C4_cmpneq: + return taken ? Hexagon::J4_cmpeq_f_jumpnv_t + : Hexagon::J4_cmpeq_f_jumpnv_nt; + + case Hexagon::C4_cmplte: + if (secondRegNewified) + return taken ? Hexagon::J4_cmplt_f_jumpnv_t + : Hexagon::J4_cmplt_f_jumpnv_nt; + return taken ? Hexagon::J4_cmpgt_f_jumpnv_t + : Hexagon::J4_cmpgt_f_jumpnv_nt; + + case Hexagon::C4_cmplteu: + if (secondRegNewified) + return taken ? Hexagon::J4_cmpltu_f_jumpnv_t + : Hexagon::J4_cmpltu_f_jumpnv_nt; + return taken ? Hexagon::J4_cmpgtu_f_jumpnv_t + : Hexagon::J4_cmpgtu_f_jumpnv_nt; + default: llvm_unreachable("Could not find matching New Value Jump instruction."); } @@ -348,6 +367,26 @@ static unsigned getNewValueJumpOpcode(MachineInstr *MI, int reg, return 0; } +bool HexagonNewValueJump::isNewValueJumpCandidate(const MachineInstr *MI) + const { + switch (MI->getOpcode()) { + case Hexagon::C2_cmpeq: + case Hexagon::C2_cmpeqi: + case Hexagon::C2_cmpgt: + case Hexagon::C2_cmpgti: + case Hexagon::C2_cmpgtu: + case Hexagon::C2_cmpgtui: + case Hexagon::C4_cmpneq: + case Hexagon::C4_cmplte: + case Hexagon::C4_cmplteu: + return true; + + default: + return false; + } +} + + bool HexagonNewValueJump::runOnMachineFunction(MachineFunction &MF) { DEBUG(dbgs() << "********** Hexagon New Value Jump **********\n" @@ -372,7 +411,7 @@ bool HexagonNewValueJump::runOnMachineFunction(MachineFunction &MF) { // Loop through all the bb's of the function for (MachineFunction::iterator MBBb = MF.begin(), MBBe = MF.end(); MBBb != MBBe; ++MBBb) { - MachineBasicBlock* MBB = MBBb; + MachineBasicBlock *MBB = &*MBBb; DEBUG(dbgs() << "** dumping bb ** " << MBB->getNumber() << "\n"); @@ -468,7 +507,7 @@ bool HexagonNewValueJump::runOnMachineFunction(MachineFunction &MF) { MI->getOperand(0).getReg() == predReg) { // Not all compares can be new value compare. Arch Spec: 7.6.1.1 - if (QII->isNewValueJumpCandidate(MI)) { + if (isNewValueJumpCandidate(MI)) { assert((MI->getDesc().isCompare()) && "Only compare instruction can be collapsed into New Value Jump"); @@ -591,8 +630,8 @@ bool HexagonNewValueJump::runOnMachineFunction(MachineFunction &MF) { DebugLoc dl = MI->getDebugLoc(); MachineInstr *NewMI; - assert((QII->isNewValueJumpCandidate(cmpInstr)) && - "This compare is not a New Value Jump candidate."); + assert((isNewValueJumpCandidate(cmpInstr)) && + "This compare is not a New Value Jump candidate."); unsigned opc = getNewValueJumpOpcode(cmpInstr, cmpOp2, isSecondOpNewified, jmpTarget, MBPI); |
