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| author | Logan Chien <loganchien@google.com> | 2011-10-20 00:08:13 +0800 |
|---|---|---|
| committer | Logan Chien <loganchien@google.com> | 2011-10-20 00:09:35 +0800 |
| commit | 0ebc07a576037e4e36f68bf5cece32740ca120c0 (patch) | |
| tree | c2e40648043d01498ee25af839a071193561e425 /lib/CodeGen/SpillPlacement.cpp | |
| parent | 62383e889e0b06fd12a6b88311717cd33a1925c4 (diff) | |
| parent | cdd8e46bec4e975d00a5abea808d8eb4138515c5 (diff) | |
| download | external_llvm-0ebc07a576037e4e36f68bf5cece32740ca120c0.zip external_llvm-0ebc07a576037e4e36f68bf5cece32740ca120c0.tar.gz external_llvm-0ebc07a576037e4e36f68bf5cece32740ca120c0.tar.bz2 | |
Merge with LLVM upstream 2011/10/20 (r142530)
Conflicts:
lib/Support/Unix/Host.inc
Change-Id: Idc00db3b63912dca6348bddd9f8a1af2a8d5d147
Diffstat (limited to 'lib/CodeGen/SpillPlacement.cpp')
| -rw-r--r-- | lib/CodeGen/SpillPlacement.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/CodeGen/SpillPlacement.cpp b/lib/CodeGen/SpillPlacement.cpp index 6949618..6f33f54 100644 --- a/lib/CodeGen/SpillPlacement.cpp +++ b/lib/CodeGen/SpillPlacement.cpp @@ -220,6 +220,7 @@ void SpillPlacement::addConstraints(ArrayRef<BlockConstraint> LiveBlocks) { 0, // DontCare, 1, // PrefReg, -1, // PrefSpill + 0, // PrefBoth -HUGE_VALF // MustSpill }; @@ -239,6 +240,22 @@ void SpillPlacement::addConstraints(ArrayRef<BlockConstraint> LiveBlocks) { } } +/// addPrefSpill - Same as addConstraints(PrefSpill) +void SpillPlacement::addPrefSpill(ArrayRef<unsigned> Blocks, bool Strong) { + for (ArrayRef<unsigned>::iterator I = Blocks.begin(), E = Blocks.end(); + I != E; ++I) { + float Freq = getBlockFrequency(*I); + if (Strong) + Freq += Freq; + unsigned ib = bundles->getBundle(*I, 0); + unsigned ob = bundles->getBundle(*I, 1); + activate(ib); + activate(ob); + nodes[ib].addBias(-Freq, 1); + nodes[ob].addBias(-Freq, 0); + } +} + void SpillPlacement::addLinks(ArrayRef<unsigned> Links) { for (ArrayRef<unsigned>::iterator I = Links.begin(), E = Links.end(); I != E; ++I) { |