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Changing the default MaxNumPromotions from 2 to 3.

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Summary: In performance tuning, we see performance benefits when enlarge the maximum num promotion targets to 3. This is safe as soon as we have total percentage threshold properly setup (https://reviews.llvm.org/D35962)

Reviewers: davidxl, tejohnson

Reviewed By: tejohnson

Subscribers: llvm-commits, sanjoy

Differential Revision: https://reviews.llvm.org/D35966

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309346 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dehao Chen
2017-07-28 01:03:10 +00:00
parent 87452e81d0
commit 4e66379c80
1 changed files with 1 additions and 1 deletions
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lib/Analysis/IndirectCallPromotionAnalysis.cpp
+1 -1
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@@ -58,7 +58,7 @@ static cl::opt<unsigned>
// Set the maximum number of targets to promote for a single indirect-call
// callsite.
static cl::opt<unsigned>
MaxNumPromotions("icp-max-prom", cl::init(2), cl::Hidden, cl::ZeroOrMore,
MaxNumPromotions("icp-max-prom", cl::init(3), cl::Hidden, cl::ZeroOrMore,
cl::desc("Max number of promotions for a single indirect "
"call callsite"));