From 2081cf96ed0cca358352284620721c33eb841e89 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Mon, 19 Mar 2007 06:19:16 +0000 Subject: [PATCH] Add a TargetInstrDescriptor flag to mark an instruction as "re-materializable". It means the instruction can be easily re-materialized at any point. e.g. constant generation, load from constantpool. llvm-svn: 35158 --- include/llvm/Target/TargetInstrInfo.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 1cb7e6817b2..aef9093d49e 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -78,6 +78,10 @@ const unsigned M_VARIABLE_OPS = 1 << 11; // execution. const unsigned M_PREDICATED = 1 << 12; +// M_REMATERIALIZIBLE - Set if this instruction can be trivally re-materialized +// at any time, e.g. constant generation, load from constant pool. +const unsigned M_REMATERIALIZIBLE = 1 << 13; + // Machine operand flags // M_LOOK_UP_PTR_REG_CLASS - Set if this operand is a pointer value and it @@ -207,6 +211,9 @@ public: bool isPredicated(MachineOpCode Opcode) const { return get(Opcode).Flags & M_PREDICATED; } + bool isReMaterializable(MachineOpCode Opcode) const { + return get(Opcode).Flags & M_REMATERIALIZIBLE; + } bool isCommutableInstr(MachineOpCode Opcode) const { return get(Opcode).Flags & M_COMMUTABLE; }