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| author | Evan Cheng <evan.cheng@apple.com> | 2009-03-30 21:34:07 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-03-30 21:34:07 +0000 |
| commit | e6f350d7558f2db6c39c0a9fc8beafb796d9919a (patch) | |
| tree | 8be8aeaddc0757d52150e560092aecbc5a4062ab /include/llvm/CodeGen/MachineBasicBlock.h | |
| parent | f54229192c22559389b0ef47e731fd628db963c5 (diff) | |
Turn a 2-address instruction into a 3-address one when it's profitable even if the two-address operand is killed.
e.g.
%reg1024<def> = MOV r1
%reg1025<def> = ADD %reg1024, %reg1026
r0 = MOV %reg1025
If it's not possible / profitable to commute ADD, then turning ADD into a LEA saves a copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68065 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/MachineBasicBlock.h')
0 files changed, 0 insertions, 0 deletions