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[profile] Add a test to ensure runtime allocator is not invoked 

llvm-svn: 271017
This commit is contained in:
Xinliang David Li 2016-05-27 16:49:29 +00:00
parent 1cda54f369
commit c3fdce3f1d
2 changed files with 47 additions and 0 deletions
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41
compiler-rt/test/profile/Inputs/instrprof-alloc.c Normal file
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/* This test case tests that when static allocation for value
* profiler is on, no malloc/calloc calls will be invoked by
* profile runtime library. */
#include <stdlib.h>
__attribute__((noinline)) void foo() {}
__attribute__((noinline)) void foo2() {}
void (*FP)();
int MainEntered = 0;
int CallocCalled = 0;
int MallocCalled = 0;
extern void *__real_calloc(size_t s, size_t n);
extern void *__real_malloc(size_t s);
void *__wrap_calloc(size_t s, size_t n) {
if (MainEntered)
CallocCalled = 1;
return __real_calloc(s, n);
}
void *__wrap_malloc(size_t s) {
if (MainEntered)
MallocCalled = 1;
return __real_malloc(s);
}
void getFP(int i) {
if (i % 2)
FP = foo;
else
FP = foo2;
}
int main() {
int i;
MainEntered = 1;
for (i = 0; i < 100; i++) {
getFP(i);
FP();
}
return CallocCalled + MallocCalled;
}

6
compiler-rt/test/profile/Linux/instrprof-alloc.test Normal file
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// RUN: %clang_profgen -Xclang -fprofile-instrument=llvm -fuse-ld=gold -Wl,-wrap,malloc -Wl,-wrap,calloc -o %t -O3 %S/../Inputs/instrprof-alloc.c
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
// RUN: %clang_profgen -Xclang -fprofile-instrument=llvm -mllvm -vp-static-alloc=false -fuse-ld=gold -Wl,-wrap,malloc -Wl,-wrap,calloc -o %t.dyn -O3 %S/../Inputs/instrprof-alloc.c
// RUN: env LLVM_PROFILE_FILE=%t.profraw not %run %t.dyn