Changeset View
Changeset View
Standalone View
Standalone View
llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.cpp
| Show First 20 Lines • Show All 77 Lines • ▼ Show 20 Lines | unsigned AArch64InstrInfo::getInstSizeInBytes(const MachineInstr &MI) const { | ||||
| const MCAsmInfo *MAI = MF->getTarget().getMCAsmInfo(); | const MCAsmInfo *MAI = MF->getTarget().getMCAsmInfo(); | ||||
| { | { | ||||
| auto Op = MI.getOpcode(); | auto Op = MI.getOpcode(); | ||||
| if (Op == AArch64::INLINEASM || Op == AArch64::INLINEASM_BR) | if (Op == AArch64::INLINEASM || Op == AArch64::INLINEASM_BR) | ||||
| return getInlineAsmLength(MI.getOperand(0).getSymbolName(), *MAI); | return getInlineAsmLength(MI.getOperand(0).getSymbolName(), *MAI); | ||||
| } | } | ||||
| // Meta-instructions emit no code. | |||||
| if (MI.isMetaInstruction()) | |||||
| return 0; | |||||
| // FIXME: We currently only handle pseudoinstructions that don't get expanded | // FIXME: We currently only handle pseudoinstructions that don't get expanded | ||||
| // before the assembly printer. | // before the assembly printer. | ||||
| unsigned NumBytes = 0; | unsigned NumBytes = 0; | ||||
| const MCInstrDesc &Desc = MI.getDesc(); | const MCInstrDesc &Desc = MI.getDesc(); | ||||
| switch (Desc.getOpcode()) { | switch (Desc.getOpcode()) { | ||||
| default: | default: | ||||
| // Anything not explicitly designated otherwise is a normal 4-byte insn. | // Anything not explicitly designated otherwise is a normal 4-byte insn. | ||||
| NumBytes = 4; | NumBytes = 4; | ||||
| break; | break; | ||||
| case TargetOpcode::DBG_VALUE: | |||||
| case TargetOpcode::EH_LABEL: | |||||
| case TargetOpcode::IMPLICIT_DEF: | |||||
| case TargetOpcode::KILL: | |||||
| NumBytes = 0; | |||||
| break; | |||||
| case TargetOpcode::STACKMAP: | case TargetOpcode::STACKMAP: | ||||
| // The upper bound for a stackmap intrinsic is the full length of its shadow | // The upper bound for a stackmap intrinsic is the full length of its shadow | ||||
| NumBytes = StackMapOpers(&MI).getNumPatchBytes(); | NumBytes = StackMapOpers(&MI).getNumPatchBytes(); | ||||
| assert(NumBytes % 4 == 0 && "Invalid number of NOP bytes requested!"); | assert(NumBytes % 4 == 0 && "Invalid number of NOP bytes requested!"); | ||||
| break; | break; | ||||
| case TargetOpcode::PATCHPOINT: | case TargetOpcode::PATCHPOINT: | ||||
| // The size of the patchpoint intrinsic is the number of bytes requested | // The size of the patchpoint intrinsic is the number of bytes requested | ||||
| NumBytes = PatchPointOpers(&MI).getNumPatchBytes(); | NumBytes = PatchPointOpers(&MI).getNumPatchBytes(); | ||||
| ▲ Show 20 Lines • Show All 5,487 Lines • Show Last 20 Lines | |||||