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| author | Quentin Colombet <qcolombet@apple.com> | 2014-08-21 22:23:52 +0000 |
|---|---|---|
| committer | Quentin Colombet <qcolombet@apple.com> | 2014-08-21 22:23:52 +0000 |
| commit | 6674b095b85df6cc908029e7ed5c2e71f69e3c30 (patch) | |
| tree | 4da1aa2b722246a17a62d7df0a6fccaae6ade608 /llvm/lib | |
| parent | 4e8cb79425d04fdd3d29776af04acbf7a2d14119 (diff) | |
| download | bcm5719-llvm-6674b095b85df6cc908029e7ed5c2e71f69e3c30.tar.gz bcm5719-llvm-6674b095b85df6cc908029e7ed5c2e71f69e3c30.zip | |
[PeepholeOptimizer] Enable the advanced copy optimization by default.
The advanced copy optimization does not yield any difference on the whole llvm
test-suite + SPECs, either in compile time or runtime (binaries are identical),
but has a big potential when data go back and forth between register files as
demonstrated with test/CodeGen/ARM/adv-copy-opt.ll.
Note: This was measured for both Os and O3 for armv7s, arm64, and x86_64.
<rdar://problem/12702965>
llvm-svn: 216236
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/PeepholeOptimizer.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp index 98fcc2e2529..d38502298cc 100644 --- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp +++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp @@ -94,7 +94,7 @@ DisablePeephole("disable-peephole", cl::Hidden, cl::init(false), cl::desc("Disable the peephole optimizer")); static cl::opt<bool> -DisableAdvCopyOpt("disable-adv-copy-opt", cl::Hidden, cl::init(true), +DisableAdvCopyOpt("disable-adv-copy-opt", cl::Hidden, cl::init(false), cl::desc("Disable advanced copy optimization")); STATISTIC(NumReuse, "Number of extension results reused"); |
