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| author | dim <dim@FreeBSD.org> | 2015-05-27 20:26:41 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2015-05-27 20:26:41 +0000 |
| commit | 5ef8fd3549d38e883a31881636be3dc2a275de20 (patch) | |
| tree | bd13a22d9db57ccf3eddbc07b32c18109521d050 /contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | |
| parent | 77794ebe2d5718eb502c93ec32f8ccae4d8a0b7b (diff) | |
| parent | 782067d0278612ee75d024b9b135c221c327e9e8 (diff) | |
| download | FreeBSD-src-5ef8fd3549d38e883a31881636be3dc2a275de20.zip FreeBSD-src-5ef8fd3549d38e883a31881636be3dc2a275de20.tar.gz | |
Merge llvm trunk r238337 from ^/vendor/llvm/dist, resolve conflicts, and
preserve our customizations, where necessary.
Diffstat (limited to 'contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp')
| -rw-r--r-- | contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 69c3685..58b87e1 100644 --- a/contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/contrib/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -296,6 +296,16 @@ void AggressiveAntiDepBreaker::HandleLastUse(unsigned Reg, unsigned KillIdx, std::multimap<unsigned, AggressiveAntiDepState::RegisterReference>& RegRefs = State->GetRegRefs(); + // FIXME: We must leave subregisters of live super registers as live, so that + // we don't clear out the register tracking information for subregisters of + // super registers we're still tracking (and with which we're unioning + // subregister definitions). + for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) + if (TRI->isSuperRegister(Reg, *AI) && State->IsLive(*AI)) { + DEBUG(if (!header && footer) dbgs() << footer); + return; + } + if (!State->IsLive(Reg)) { KillIndices[Reg] = KillIdx; DefIndices[Reg] = ~0u; |
