use a compiler-rt test

compiler-rt/test/profile/Linux/instrprof-vtable-value-prof.cpp

@@ -0,0 +1,146 @@
+
+// REQUIRES: lld-available
+
+// RUN: rm -rf %t && split-file %s %t && cd %t
+//
+// RUN: %clangxx_pgogen -fuse-ld=lld -O2 -g -fprofile-generate=. -mllvm -enable-vtable-value-profiling test.cpp -o test
+// RUN: env LLVM_PROFILE_FILE=test.profraw ./test
+
+// Show vtable profiles from raw profile.
+// RUN: llvm-profdata show --function=main --ic-targets -show-vtables test.profraw | FileCheck %s --check-prefixes=COMMON,RAW
+
+// Generate indexed profile from raw profile and show the data.
+// RUN: llvm-profdata merge test.profraw -o test.profdata
+// RUN: llvm-profdata show --function=main --ic-targets --show-vtables test.profdata | FileCheck %s --check-prefixes=COMMON,INDEXED
+
+// Generate text profile from raw and indexed profiles respectively and show the data.
+// RUN: llvm-profdata merge --text test.profraw -o raw.proftext
+// RUN: llvm-profdata show --function=main --ic-targets --show-vtables --text raw.proftext | FileCheck %s --check-prefix=ICTEXT
+// RUN: llvm-profdata merge --text test.profdata -o indexed.proftext
+// RUN: llvm-profdata show --function=main --ic-targets --show-vtables --text indexed.proftext | FileCheck %s --check-prefix=ICTEXT
+
+// Generate indexed profile from text profiles and show the data
+// RUN: llvm-profdata merge --binary raw.proftext -o text.profraw
+// RUN: llvm-profdata show --function=main --ic-targets --show-vtables text.profraw | FileCheck %s --check-prefixes=COMMON,INDEXED
+// RUN: llvm-profdata merge --binary indexed.proftext -o text.profdata
+// RUN: llvm-profdata show --function=main --ic-targets --show-vtables text.profdata | FileCheck %s --check-prefixes=COMMON,INDEXED
+
+// COMMON: Counters:
+// COMMON-NEXT:  main:
+// COMMON-NEXT:  Hash: 0x0f9a16fe6d398548
+// COMMON-NEXT:  Counters: 2
+// COMMON-NEXT:  Indirect Call Site Count: 2
+// COMMON-NEXT:  Number of instrumented vtables: 2
+// RAW:  Indirect Target Results:
+// RAW-NEXT:       [  0, _ZN8Derived15func1Eii,        250 ] (25.00%)
+// RAW-NEXT:       [  0, test.cpp;_ZN12_GLOBAL__N_18Derived25func1Eii,        750 ] (75.00%)
+// RAW-NEXT:       [  1, _ZN8Derived15func2Eii,        250 ] (25.00%)
+// RAW-NEXT:       [  1, test.cpp;_ZN12_GLOBAL__N_18Derived25func2Eii,        750 ] (75.00%)
+// RAW-NEXT:  VTable Results:
+// RAW-NEXT:       [  0, _ZTV8Derived1,        250 ] (25.00%)
+// RAW-NEXT:       [  0, test.cpp;_ZTVN12_GLOBAL__N_18Derived2E,        750 ] (75.00%)
+// RAW-NEXT:       [  1, _ZTV8Derived1,        250 ] (25.00%)
+// RAW-NEXT:       [  1, test.cpp;_ZTVN12_GLOBAL__N_18Derived2E,        750 ] (75.00%)
+// INDEXED:     Indirect Target Results:
+// INDEXED-NEXT:         [  0, test.cpp;_ZN12_GLOBAL__N_18Derived25func1Eii,        750 ] (75.00%)
+// INDEXED-NEXT:         [  0, _ZN8Derived15func1Eii,        250 ] (25.00%)
+// INDEXED-NEXT:         [  1, test.cpp;_ZN12_GLOBAL__N_18Derived25func2Eii,        750 ] (75.00%)
+// INDEXED-NEXT:         [  1, _ZN8Derived15func2Eii,        250 ] (25.00%)
+// INDEXED-NEXT:     VTable Results:
+// INDEXED-NEXT:         [  0, test.cpp;_ZTVN12_GLOBAL__N_18Derived2E,        750 ] (75.00%)
+// INDEXED-NEXT:         [  0, _ZTV8Derived1,        250 ] (25.00%)
+// INDEXED-NEXT:         [  1, test.cpp;_ZTVN12_GLOBAL__N_18Derived2E,        750 ] (75.00%)
+// INDEXED-NEXT:         [  1, _ZTV8Derived1,        250 ] (25.00%)
+// COMMON: Instrumentation level: IR  entry_first = 0
+// COMMON-NEXT: Functions shown: 1
+// COMMON-NEXT: Total functions: 6
+// COMMON-NEXT: Maximum function count: 1000
+// COMMON-NEXT: Maximum internal block count: 250
+// COMMON-NEXT: Statistics for indirect call sites profile:
+// COMMON-NEXT:   Total number of sites: 2
+// COMMON-NEXT:   Total number of sites with values: 2
+// COMMON-NEXT:   Total number of profiled values: 4
+// COMMON-NEXT:   Value sites histogram:
+// COMMON-NEXT:         NumTargets, SiteCount
+// COMMON-NEXT:         2, 2
+// COMMON-NEXT: Statistics for vtable profile:
+// COMMON-NEXT:   Total number of sites: 2
+// COMMON-NEXT:   Total number of sites with values: 2
+// COMMON-NEXT:   Total number of profiled values: 4
+// COMMON-NEXT:   Value sites histogram:
+// COMMON-NEXT:         NumTargets, SiteCount
+// COMMON-NEXT:         2, 2
+
+// ICTEXT: :ir
+// ICTEXT: main
+// ICTEXT: # Func Hash:
+// ICTEXT: 1124236338992350536
+// ICTEXT: # Num Counters:
+// ICTEXT: 2
+// ICTEXT: # Counter Values:
+// ICTEXT: 1000
+// ICTEXT: 1
+// ICTEXT: # Num Value Kinds:
+// ICTEXT: 2
+// ICTEXT: # ValueKind = IPVK_IndirectCallTarget:
+// ICTEXT: 0
+// ICTEXT: # NumValueSites:
+// ICTEXT: 2
+// ICTEXT: 2
+// ICTEXT: test.cpp;_ZN12_GLOBAL__N_18Derived25func1Eii:750
+// ICTEXT: _ZN8Derived15func1Eii:250
+// ICTEXT: 2
+// ICTEXT: test.cpp;_ZN12_GLOBAL__N_18Derived25func2Eii:750
+// ICTEXT: _ZN8Derived15func2Eii:250
+// ICTEXT: # ValueKind = IPVK_VTableTarget:
+// ICTEXT: 2
+// ICTEXT: # NumValueSites:
+// ICTEXT: 2
+// ICTEXT: 2
+// ICTEXT: test.cpp;_ZTVN12_GLOBAL__N_18Derived2E:750
+// ICTEXT: _ZTV8Derived1:250
+// ICTEXT: 2
+// ICTEXT: test.cpp;_ZTVN12_GLOBAL__N_18Derived2E:750
+// ICTEXT: _ZTV8Derived1:250
+
+//--- test.cpp
+#include <cstdio>
+#include <cstdlib>
+class Base {
+public:
+  virtual int func1(int a, int b) = 0;
+  virtual int func2(int a, int b) = 0;
+};
+class Derived1 : public Base {
+public:
+  int func1(int a, int b) override { return a + b; }
+
+  int func2(int a, int b) override { return a * b; }
+};
+namespace {
+class Derived2 : public Base {
+public:
+  int func1(int a, int b) override { return a - b; }
+
+  int func2(int a, int b) override { return a * (a - b); }
+};
+} // namespace
+__attribute__((noinline)) Base *createType(int a) {
+  Base *base = nullptr;
+  if (a % 4 == 0)
+    base = new Derived1();
+  else
+    base = new Derived2();
+  return base;
+}
+int main(int argc, char **argv) {
+  int sum = 0;
+  for (int i = 0; i < 1000; i++) {
+    int a = rand();
+    int b = rand();
+    Base *ptr = createType(i);
+    sum += ptr->func1(a, b) + ptr->func2(b, a);
+  }
+  printf("sum is %d\n", sum);
+  return 0;
+}