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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-25 18:12:18 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-25 18:12:18 +0000 |
| commit | 5984d2b31fe3c69e46d2b81439a8c3ef0bdf9a91 (patch) | |
| tree | 0c1299a629c7b9de2201f9d510748408d5c5af6a /lib/CodeGen/MachineVerifier.cpp | |
| parent | 3769fe149bb47dfdaa8ac39b7a4c26cf98ec503e (diff) | |
Run ProcessImplicitDefs on SSA form where it can be much simpler.
Implicitly defined virtual registers can simply have the <undef> bit set
on all uses, and copies can be turned into implicit defs recursively.
Physical registers are a bit trickier. We handle the common case where a
physreg def is used by a nearby instruction in the same basic block. For
more complicated cases, just leave the IMPLICIT_DEF instruction in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159149 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineVerifier.cpp')
0 files changed, 0 insertions, 0 deletions