diff options
author | Owen Anderson <resistor@mac.com> | 2008-08-19 00:17:30 +0000 |
---|---|---|
committer | Owen Anderson <resistor@mac.com> | 2008-08-19 00:17:30 +0000 |
commit | ae339babb2a2445e7bb009912a39994718f10d54 (patch) | |
tree | ad8d31a34fa3a1042666f86de59d18fd43437cf8 /lib/CodeGen/LiveIntervalAnalysis.cpp | |
parent | 40610241d00e219341ff4b7106c5baff08ad407b (diff) | |
download | external_llvm-ae339babb2a2445e7bb009912a39994718f10d54.zip external_llvm-ae339babb2a2445e7bb009912a39994718f10d54.tar.gz external_llvm-ae339babb2a2445e7bb009912a39994718f10d54.tar.bz2 |
Add a flag to enable the fast spilling path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54958 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
-rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 53d74fc..dae20ca 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -49,6 +49,9 @@ static cl::opt<int> SplitLimit("split-limit", static cl::opt<bool> EnableAggressiveRemat("aggressive-remat", cl::Hidden); +static cl::opt<bool> EnableFastSpilling("fast-spill", + cl::init(false), cl::Hidden); + STATISTIC(numIntervals, "Number of original intervals"); STATISTIC(numIntervalsAfter, "Number of intervals after coalescing"); STATISTIC(numFolds , "Number of loads/stores folded into instructions"); @@ -1698,6 +1701,10 @@ std::vector<LiveInterval*> LiveIntervals:: addIntervalsForSpills(const LiveInterval &li, const MachineLoopInfo *loopInfo, VirtRegMap &vrm, float &SSWeight) { + + if (EnableFastSpilling) + return addIntervalsForSpillsFast(li, loopInfo, vrm, SSWeight); + assert(li.weight != HUGE_VALF && "attempt to spill already spilled interval!"); |