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tune lowering parameter for small apps (sjeng)

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llvm-svn: 270480
This commit is contained in:
Xinliang David Li 2016-05-23 19:29:26 +00:00
parent 02d0a11d91
commit 57c7e1ac0c
1 changed files with 3 additions and 2 deletions
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5
lib/Transforms/Instrumentation/InstrProfiling.cpp
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@ -447,8 +447,9 @@ void InstrProfiling::emitVNodes() {
// the average number of counters per site is low. For small
// apps with very few sites, this may not be true. Bump up the
// number of counters in this case.
if (NumCounters < 10)
NumCounters *= 2;
#define INSTR_PROF_MIN_VAL_COUNTS 10
if (NumCounters < INSTR_PROF_MIN_VAL_COUNTS)
NumCounters = std::max(INSTR_PROF_MIN_VAL_COUNTS, (int) NumCounters * 2);
auto &Ctx = M->getContext();
Type *VNodeTypes[] = {