diff options
Diffstat (limited to 'contrib/llvm/lib/Target/ARM/Thumb2HazardRecognizer.cpp')
-rw-r--r-- | contrib/llvm/lib/Target/ARM/Thumb2HazardRecognizer.cpp | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/contrib/llvm/lib/Target/ARM/Thumb2HazardRecognizer.cpp b/contrib/llvm/lib/Target/ARM/Thumb2HazardRecognizer.cpp deleted file mode 100644 index 172908d..0000000 --- a/contrib/llvm/lib/Target/ARM/Thumb2HazardRecognizer.cpp +++ /dev/null @@ -1,53 +0,0 @@ -//===-- Thumb2HazardRecognizer.cpp - Thumb2 postra hazard recognizer ------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "ARM.h" -#include "Thumb2HazardRecognizer.h" -#include "llvm/CodeGen/MachineInstr.h" -#include "llvm/CodeGen/ScheduleDAG.h" -using namespace llvm; - -ScheduleHazardRecognizer::HazardType -Thumb2HazardRecognizer::getHazardType(SUnit *SU) { - if (ITBlockSize) { - MachineInstr *MI = SU->getInstr(); - if (!MI->isDebugValue() && MI != ITBlockMIs[ITBlockSize-1]) - return Hazard; - } - - return PostRAHazardRecognizer::getHazardType(SU); -} - -void Thumb2HazardRecognizer::Reset() { - ITBlockSize = 0; - PostRAHazardRecognizer::Reset(); -} - -void Thumb2HazardRecognizer::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; - } - } - - PostRAHazardRecognizer::EmitInstruction(SU); -} |