From fb19f9402b4fe837663c793c42d85ae3c0dbb8ba Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Tue, 1 Jul 2008 00:05:16 +0000 Subject: Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating the need for a flavor operand, and add a new SDNode subclass, LabelSDNode, for use with them to eliminate the need for a label id operand. Change instruction selection to let these label nodes through unmodified instead of creating copies of them. Teach the MachineInstr emitter how to emit a MachineInstr directly from an ISD label node. This avoids the need for allocating SDNodes for the label id and flavor value, as well as SDNodes for each of the post-isel label, label id, and label flavor. llvm-svn: 52943 --- llvm/lib/CodeGen/MachineInstr.cpp | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'llvm/lib/CodeGen/MachineInstr.cpp') diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index 18810f21085..75b2c9865ec 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -523,10 +523,18 @@ unsigned MachineInstr::getNumExplicitOperands() const { } +/// isLabel - Returns true if the MachineInstr represents a label. +/// +bool MachineInstr::isLabel() const { + return getOpcode() == TargetInstrInfo::DBG_LABEL || + getOpcode() == TargetInstrInfo::EH_LABEL || + getOpcode() == TargetInstrInfo::GC_LABEL; +} + /// isDebugLabel - Returns true if the MachineInstr represents a debug label. /// bool MachineInstr::isDebugLabel() const { - return getOpcode() == TargetInstrInfo::LABEL && getOperand(1).getImm() == 0; + return getOpcode() == TargetInstrInfo::DBG_LABEL; } /// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of -- cgit v1.2.3