diff options
| author | Dan Gohman <gohman@apple.com> | 2008-07-25 15:08:37 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-07-25 15:08:37 +0000 |
| commit | 4c8f87038ddc0fbcce751f0e2e7c0e564abca096 (patch) | |
| tree | cd2beae470c3df6743dd6ab9674730c620863632 /lib/CodeGen/LiveIntervalAnalysis.cpp | |
| parent | 92879f3a9e6625d4a17a3d93e6250a59b0497660 (diff) | |
Disable the new aggressive remat logic introduced in 54000; it causes some
regressions, such as PR2595. Also, there is a significant code-quality
issue in SPEC 464.h264ref and a few others.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54014 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index adc1e207b5..09557851be 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -47,6 +47,8 @@ static cl::opt<bool> SplitAtBB("split-intervals-at-bb", static cl::opt<int> SplitLimit("split-limit", cl::init(-1), cl::Hidden); +static cl::opt<bool> EnableAggressiveRemat("aggressive-remat", cl::Hidden); + STATISTIC(numIntervals, "Number of original intervals"); STATISTIC(numIntervalsAfter, "Number of intervals after coalescing"); STATISTIC(numFolds , "Number of loads/stores folded into instructions"); @@ -797,6 +799,8 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li, // rules. if (!MI->getDesc().isRematerializable() || !tii_->isTriviallyReMaterializable(MI)) { + if (!EnableAggressiveRemat) + return false; // If the instruction access memory but the memoperands have been lost, // we can't analyze it. |