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| author | Lang Hames <lhames@gmail.com> | 2009-08-19 01:36:14 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2009-08-19 01:36:14 +0000 |
| commit | 8481e3b368444386d5be5b74cd1e0ba6f858d983 (patch) | |
| tree | b37673c472852e0bdd056e18315411a921193dc4 /lib/CodeGen | |
| parent | 021d664a3838b89620b3fb9d995083f1da77d451 (diff) | |
| download | external_llvm-8481e3b368444386d5be5b74cd1e0ba6f858d983.zip external_llvm-8481e3b368444386d5be5b74cd1e0ba6f858d983.tar.gz external_llvm-8481e3b368444386d5be5b74cd1e0ba6f858d983.tar.bz2 | |
Added an option to have the PBQP allocator attempt coalescing during allocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79397 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/RegAllocPBQP.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp index 3da2553..227ce39 100644 --- a/lib/CodeGen/RegAllocPBQP.cpp +++ b/lib/CodeGen/RegAllocPBQP.cpp @@ -59,6 +59,11 @@ static RegisterRegAlloc registerPBQPRepAlloc("pbqp", "PBQP register allocator.", llvm::createPBQPRegisterAllocator); +static cl::opt<bool> +pbqpCoalescing("pbqp-coalescing", + cl::desc("Attempt coalescing during PBQP register allocation."), + cl::init(false), cl::Hidden); + namespace { /// @@ -537,7 +542,11 @@ PBQP::SimpleGraph PBQPRegAlloc::constructPBQPProblem() { } // Get the set of potential coalesces. - CoalesceMap coalesces;//(findCoalesces()); + CoalesceMap coalesces; + + if (pbqpCoalescing) { + coalesces = findCoalesces(); + } // Construct a PBQP solver for this problem PBQP::SimpleGraph problem; |