From 8370d38adee63b3a4d87bfe81be4aacc55fe7cda Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Wed, 28 May 2008 22:54:52 +0000 Subject: Add a flag to indicate that an instruction is as cheap (or cheaper) than a move instruction to execute. This can be used for transformations (like two-address conversion) to remat an instruction instead of generating a "move" instruction. The idea is to decrease the live ranges and register pressure and all that jazz. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51660 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/MachineInstr.cpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'lib/CodeGen/MachineInstr.cpp') diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index 135718acc7..e008c9a61b 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -639,9 +639,9 @@ void MachineInstr::copyPredicates(const MachineInstr *MI) { } } -/// isSafeToMove - Return true if it is safe to this instruction. If SawStore -/// true, it means there is a store (or call) between the instruction the -/// localtion and its intended destination. +/// isSafeToMove - Return true if it is safe to this instruction. If SawStore is +/// set to true, it means that there is a store (or call) between the +/// instruction's location and its intended destination. bool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, bool &SawStore) { // Ignore stuff that we obviously can't move. if (TID->mayStore() || TID->isCall()) { -- cgit v1.2.3-18-g5258