diff options
Diffstat (limited to 'lib/Target/ARM/ARMHazardRecognizer.cpp')
-rw-r--r-- | lib/Target/ARM/ARMHazardRecognizer.cpp | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/lib/Target/ARM/ARMHazardRecognizer.cpp b/lib/Target/ARM/ARMHazardRecognizer.cpp index 2393544dec..a5fd15b6bb 100644 --- a/lib/Target/ARM/ARMHazardRecognizer.cpp +++ b/lib/Target/ARM/ARMHazardRecognizer.cpp @@ -38,9 +38,6 @@ ARMHazardRecognizer::getHazardType(SUnit *SU, int Stalls) { MachineInstr *MI = SU->getInstr(); if (!MI->isDebugValue()) { - if (ITBlockSize && MI != ITBlockMIs[ITBlockSize-1]) - return Hazard; - // Look for special VMLA / VMLS hazards. A VMUL / VADD / VSUB following // a VMLA / VMLS will cause 4 cycle stall. const MCInstrDesc &MCID = MI->getDesc(); @@ -76,30 +73,11 @@ ARMHazardRecognizer::getHazardType(SUnit *SU, int Stalls) { void ARMHazardRecognizer::Reset() { LastMI = 0; FpMLxStalls = 0; - ITBlockSize = 0; ScoreboardHazardRecognizer::Reset(); } void ARMHazardRecognizer::EmitInstruction(SUnit *SU) { MachineInstr *MI = SU->getInstr(); - unsigned Opcode = MI->getOpcode(); - if (ITBlockSize) { - --ITBlockSize; - } else if (Opcode == ARM::t2IT) { - unsigned Mask = MI->getOperand(1).getImm(); - unsigned NumTZ = CountTrailingZeros_32(Mask); - assert(NumTZ <= 3 && "Invalid IT mask!"); - ITBlockSize = 4 - NumTZ; - MachineBasicBlock::iterator I = MI; - for (unsigned i = 0; i < ITBlockSize; ++i) { - // Advance to the next instruction, skipping any dbg_value instructions. - do { - ++I; - } while (I->isDebugValue()); - ITBlockMIs[ITBlockSize-1-i] = &*I; - } - } - if (!MI->isDebugValue()) { LastMI = MI; FpMLxStalls = 0; |