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Remove code to saturate profile counts.

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We may need to change the way profile counter values are stored, but
saturation is the wrong thing to do.  Just remove it for now.

Patch by Alastair Murray!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166938 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2012-10-29 17:27:39 +00:00
parent d233b78760
commit 6a09098cca
2 changed files with 1 additions and 11 deletions
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3
include/llvm/Analysis/ProfileDataLoader.h
View File

@ -115,9 +115,6 @@ public:
/// been counted yet.
static const unsigned Uncounted;
/// The maximum value that can be stored in a profiling counter.
static const unsigned MaxCount;
/// getNumExecutions - Return the number of times the target program was run
/// to generate this profiling data.
unsigned getNumExecutions() const { return CommandLines.size(); }

9
lib/Analysis/ProfileDataLoader.cpp
View File

@ -51,13 +51,7 @@ static unsigned AddCounts(unsigned A, unsigned B) {
if (A == ProfileDataLoader::Uncounted) return B;
if (B == ProfileDataLoader::Uncounted) return A;
// Saturate to the maximum storable value. This could change taken/nottaken
// ratios, but is presumably better than wrapping and thus potentially
// inverting ratios.
uint64_t tmp = (uint64_t)A + (uint64_t)B;
if (tmp > (uint64_t)ProfileDataLoader::MaxCount)
tmp = ProfileDataLoader::MaxCount;
return (unsigned)tmp;
return A + B;
}
/// ReadProfilingData - Load 'NumEntries' items of type 'T' from file 'F'
@ -120,7 +114,6 @@ static void ReadProfilingArgBlock(const char *ToolName, FILE *F,
}
const unsigned ProfileDataLoader::Uncounted = ~0U;
const unsigned ProfileDataLoader::MaxCount = ~0U - 1U;
/// ProfileDataLoader ctor - Read the specified profiling data file, reporting
/// a fatal error if the file is invalid or broken.