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| author | Jim Grosbach <grosbach@apple.com> | 2012-07-17 00:47:06 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2012-07-17 00:47:06 +0000 |
| commit | 514410ba073ef994d05004f7c298bd1df192d766 (patch) | |
| tree | 6d2c929c698a5251383d34bc7f46901751a39ec6 /lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp | |
| parent | b7fa0d58fa31e21cb5cc38628dfc8e4178c69d87 (diff) | |
| download | bcm5719-llvm-514410ba073ef994d05004f7c298bd1df192d766.tar.gz bcm5719-llvm-514410ba073ef994d05004f7c298bd1df192d766.zip | |
TableGen: Allow conditional instruction pattern in multiclass.
Define a 'null_frag' SDPatternOperator node, which if referenced in an
instruction Pattern, results in the pattern being collapsed to be as-if
'[]' had been specified instead. This allows supporting a multiclass
definition where some instaniations have ISel patterns associated and
others do not.
For example,
multiclass myMulti<RegisterClass rc, SDPatternOperator OpNode = null_frag> {
def _x : myI<(outs rc:), (ins rc:), []>;
def _r : myI<(outs rc:), (ins rc:), [(set rc:, (OpNode rc:))]>;
}
defm foo : myMulti<GRa, not>;
defm bar : myMulti<GRb>;
llvm-svn: 160333
Diffstat (limited to 'lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp')
0 files changed, 0 insertions, 0 deletions
