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add a note about a general improvement to the code generator

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30642 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-09-28 06:01:17 +00:00
parent f6e70fa0d3
commit f308ea01d5
1 changed files with 15 additions and 1 deletions
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16
lib/Target/README.txt
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@ -1,6 +1,20 @@
Target Independent Opportunities:
===-------------------------------------------------------------------------===
//===---------------------------------------------------------------------===//
We should make the following changes to clean up MachineInstr:
1. Add an Opcode field to TargetInstrDescriptor, so you can tell the opcode of
an instruction with just a TargetInstrDescriptor*.
2. Remove the Opcode field from MachineInstr, replacing it with a
TargetInstrDescriptor*.
3. Getting information about a machine instr then becomes:
MI->getInfo()->isTwoAddress()
instead of:
const TargetInstrInfo &TII = ...
TII.isTwoAddrInstr(MI->getOpcode())
//===---------------------------------------------------------------------===//
FreeBench/mason contains code like this: