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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-08-17 23:38:41 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-08-17 23:38:41 +0000 |
| commit | c0541dfa3e8b6e047e11edba3d6f9bc134dbb1a8 (patch) | |
| tree | 913ebb6143ea6da58eeec33fb0a95389f857f450 /llvm/lib/CodeGen/MachineBlockPlacement.cpp | |
| parent | 1fae3ae6f0e82a1c174ec5dc19ca9bf43418efa9 (diff) | |
| download | bcm5719-llvm-c0541dfa3e8b6e047e11edba3d6f9bc134dbb1a8.tar.gz bcm5719-llvm-c0541dfa3e8b6e047e11edba3d6f9bc134dbb1a8.zip | |
Increase tail dup threshold for -O3 from 3 to 4.
We see a modest performance improvement from this slightly higher tail dup threshold.
Differential Revision: https://reviews.llvm.org/D36775
llvm-svn: 311139
Diffstat (limited to 'llvm/lib/CodeGen/MachineBlockPlacement.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineBlockPlacement.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineBlockPlacement.cpp b/llvm/lib/CodeGen/MachineBlockPlacement.cpp index 374b3079c34..65330308dad 100644 --- a/llvm/lib/CodeGen/MachineBlockPlacement.cpp +++ b/llvm/lib/CodeGen/MachineBlockPlacement.cpp @@ -143,7 +143,7 @@ static cl::opt<unsigned> TailDupPlacementAggressiveThreshold( "tail-dup-placement-aggressive-threshold", cl::desc("Instruction cutoff for aggressive tail duplication during " "layout. Used at -O3. Tail merging during layout is forced to " - "have a threshold that won't conflict."), cl::init(3), + "have a threshold that won't conflict."), cl::init(4), cl::Hidden); // Heuristic for tail duplication. |
