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InstrProf: Fix display of large numbers in llvm-cov

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llvm-cov was truncating numbers that were larger than a particular
fixed width, which is as confusing as it is useless. Instead, we use
engineering notation with SI prefix for magnitude.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237307 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2015-05-13 22:41:48 +00:00
parent 33bf03ed89
commit 98f0f26fdf
5 changed files with 62 additions and 58 deletions
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6
test/tools/llvm-cov/Inputs/lineExecutionCounts.proftext
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@ -1,8 +1,8 @@
main
0x000000000028434d
5
1
161
0
100
1
16100
161
0

6
test/tools/llvm-cov/Inputs/regionMarkers.proftext
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@ -1,8 +1,8 @@
main
0x000000000028434d
5
1
1111000
0
100
1
111100000
1111000
0

48
test/tools/llvm-cov/showLineExecutionCounts.cpp
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@ -1,30 +1,30 @@
// Basic handling of line counts.
// RUN: llvm-profdata merge %S/Inputs/lineExecutionCounts.proftext -o %t.profdata
// before any coverage // WHOLE-FILE: | [[@LINE]]|// before
// FILTER-NOT: | [[@LINE-1]]|// before
int main() { // CHECK: 1| [[@LINE]]|int main(
int x = 0; // CHECK: 1| [[@LINE]]| int x
// CHECK: 1| [[@LINE]]|
if (x) { // CHECK: 0| [[@LINE]]| if (x)
x = 0; // CHECK: 0| [[@LINE]]| x = 0
} else { // CHECK: 1| [[@LINE]]| } else
x = 1; // CHECK: 1| [[@LINE]]| x = 1
} // CHECK: 1| [[@LINE]]| }
// CHECK: 1| [[@LINE]]|
for (int i = 0; i < 100; ++i) { // CHECK: 101| [[@LINE]]| for (
x = 1; // CHECK: 100| [[@LINE]]| x = 1
} // CHECK: 100| [[@LINE]]| }
// CHECK: 1| [[@LINE]]|
x = x < 10 ? x + 1 : x - 1; // CHECK: 1| [[@LINE]]| x =
x = x > 10 ? // CHECK: 1| [[@LINE]]| x =
x - 1: // CHECK: 0| [[@LINE]]| x
x + 1; // CHECK: 1| [[@LINE]]| x
// CHECK: 1| [[@LINE]]|
return 0; // CHECK: 1| [[@LINE]]| return
} // CHECK: 1| [[@LINE]]|}
// after coverage // WHOLE-FILE: | [[@LINE]]|// after
// FILTER-NOT: | [[@LINE-1]]|// after
// before any coverage // WHOLE-FILE: | [[@LINE]]|// before
// FILTER-NOT: | [[@LINE-1]]|// before
int main() { // CHECK: 161| [[@LINE]]|int main(
int x = 0; // CHECK: 161| [[@LINE]]| int x
// CHECK: 161| [[@LINE]]|
if (x) { // CHECK: 0| [[@LINE]]| if (x)
x = 0; // CHECK: 0| [[@LINE]]| x = 0
} else { // CHECK: 161| [[@LINE]]| } else
x = 1; // CHECK: 161| [[@LINE]]| x = 1
} // CHECK: 161| [[@LINE]]| }
// CHECK: 161| [[@LINE]]|
for (int i = 0; i < 100; ++i) { // CHECK: 16.2k| [[@LINE]]| for (
x = 1; // CHECK: 16.1k| [[@LINE]]| x = 1
} // CHECK: 16.1k| [[@LINE]]| }
// CHECK: 161| [[@LINE]]|
x = x < 10 ? x + 1 : x - 1; // CHECK: 161| [[@LINE]]| x =
x = x > 10 ? // CHECK: 161| [[@LINE]]| x =
x - 1: // CHECK: 0| [[@LINE]]| x
x + 1; // CHECK: 161| [[@LINE]]| x
// CHECK: 161| [[@LINE]]|
return 0; // CHECK: 161| [[@LINE]]| return
} // CHECK: 161| [[@LINE]]|}
// after coverage // WHOLE-FILE: | [[@LINE]]|// after
// FILTER-NOT: | [[@LINE-1]]|// after
// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -filename-equivalence %s | FileCheck -check-prefix=CHECK -check-prefix=WHOLE-FILE %s
// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -filename-equivalence -name=main %s | FileCheck -check-prefix=CHECK -check-prefix=FILTER %s

14
test/tools/llvm-cov/showRegionMarkers.cpp
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@ -1,23 +1,23 @@
// RUN: llvm-profdata merge %S/Inputs/regionMarkers.proftext -o %t.profdata
int main() { // CHECK: Marker at [[@LINE]]:12 = 1
int main() { // CHECK: Marker at [[@LINE]]:12 = 1.11M
int x = 0;
if (x) { // CHECK: Marker at [[@LINE]]:10 = 0
x = 0;
} else { // CHECK: Marker at [[@LINE]]:10 = 1
} else { // CHECK: Marker at [[@LINE]]:10 = 1.11M
x = 1;
}
// CHECK: Marker at [[@LINE+2]]:19 = 101
// CHECK: Marker at [[@LINE+1]]:28 = 100
for (int i = 0; i < 100; ++i) { // CHECK: Marker at [[@LINE]]:33 = 100
// CHECK: Marker at [[@LINE+2]]:19 = 112M
// CHECK: Marker at [[@LINE+1]]:28 = 111M
for (int i = 0; i < 100; ++i) { // CHECK: Marker at [[@LINE]]:33 = 111M
x = 1;
}
// CHECK: Marker at [[@LINE+1]]:16 = 1
// CHECK: Marker at [[@LINE+1]]:16 = 1.11M
x = x < 10 ? x + 1 : x - 1; // CHECK: Marker at [[@LINE]]:24 = 0
x = x > 10 ?
x - 1: // CHECK: Marker at [[@LINE]]:9 = 0
x + 1; // CHECK: Marker at [[@LINE]]:9 = 1
x + 1; // CHECK: Marker at [[@LINE]]:9 = 1.11M
return 0;
}

46
tools/llvm-cov/SourceCoverageView.cpp
View File

@ -14,6 +14,7 @@
#include "SourceCoverageView.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/LineIterator.h"
using namespace llvm;
@ -77,6 +78,22 @@ void SourceCoverageView::renderViewDivider(unsigned Level, unsigned Length,
OS << "-";
}
/// Format a count using engineering notation with 3 significant digits.
static std::string formatCount(uint64_t N) {
std::string Number = utostr(N);
int Len = Number.size();
if (Len <= 3)
return Number;
int IntLen = Len % 3 == 0 ? 3 : Len % 3;
std::string Result(Number.data(), IntLen);
if (IntLen != 3) {
Result.push_back('.');
Result += Number.substr(IntLen, 3 - IntLen);
}
Result.push_back(" kMGTPEZY"[(Len - 1) / 3]);
return Result;
}
void
SourceCoverageView::renderLineCoverageColumn(raw_ostream &OS,
const LineCoverageInfo &Line) {
@ -84,17 +101,11 @@ SourceCoverageView::renderLineCoverageColumn(raw_ostream &OS,
OS.indent(LineCoverageColumnWidth) << '|';
return;
}
SmallString<32> Buffer;
raw_svector_ostream BufferOS(Buffer);
BufferOS << Line.ExecutionCount;
auto Str = BufferOS.str();
// Trim
Str = Str.substr(0, std::min(Str.size(), (size_t)LineCoverageColumnWidth));
// Align to the right
OS.indent(LineCoverageColumnWidth - Str.size());
std::string C = formatCount(Line.ExecutionCount);
OS.indent(LineCoverageColumnWidth - C.size());
colored_ostream(OS, raw_ostream::MAGENTA,
Line.hasMultipleRegions() && Options.Colors)
<< Str;
<< C;
OS << '|';
}
@ -111,9 +122,6 @@ void SourceCoverageView::renderLineNumberColumn(raw_ostream &OS,
void SourceCoverageView::renderRegionMarkers(
raw_ostream &OS, ArrayRef<const coverage::CoverageSegment *> Segments) {
SmallString<32> Buffer;
raw_svector_ostream BufferOS(Buffer);
unsigned PrevColumn = 1;
for (const auto *S : Segments) {
if (!S->IsRegionEntry)
@ -122,20 +130,16 @@ void SourceCoverageView::renderRegionMarkers(
if (S->Col > PrevColumn)
OS.indent(S->Col - PrevColumn);
PrevColumn = S->Col + 1;
BufferOS << S->Count;
StringRef Str = BufferOS.str();
// Trim the execution count
Str = Str.substr(0, std::min(Str.size(), (size_t)7));
PrevColumn += Str.size();
OS << '^' << Str;
Buffer.clear();
std::string C = formatCount(S->Count);
PrevColumn += C.size();
OS << '^' << C;
}
OS << "\n";
if (Options.Debug)
for (const auto *S : Segments)
errs() << "Marker at " << S->Line << ":" << S->Col << " = " << S->Count
<< (S->IsRegionEntry ? "\n" : " (pop)\n");
errs() << "Marker at " << S->Line << ":" << S->Col << " = "
<< formatCount(S->Count) << (S->IsRegionEntry ? "\n" : " (pop)\n");
}
void SourceCoverageView::render(raw_ostream &OS, bool WholeFile,