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[BOLT] Add runtime functions required by freestanding environment

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Compiler can generate calls to some functions implicitly, even under
constraints of freestanding environment. Make sure these functions are
available in our runtime objects.

Fixes test failures on some systems after https://reviews.llvm.org/D128960.

Reviewed By: yota9

Differential Revision: https://reviews.llvm.org/D129168
This commit is contained in:
Maksim Panchenko
2022-07-05 19:55:26 -07:00
parent 8a668671a0
commit ea2182fedd
3 changed files with 49 additions and 19 deletions
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6
bolt/runtime/instr.cpp
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@@ -224,7 +224,7 @@ BumpPtrAllocator GlobalAlloc;
void *operator new(size_t Sz, BumpPtrAllocator &A) { return A.allocate(Sz); }
void *operator new(size_t Sz, BumpPtrAllocator &A, char C) {
auto *Ptr = reinterpret_cast<char *>(A.allocate(Sz));
memSet(Ptr, C, Sz);
memset(Ptr, C, Sz);
return Ptr;
}
void *operator new[](size_t Sz, BumpPtrAllocator &A) {
@@ -232,7 +232,7 @@ void *operator new[](size_t Sz, BumpPtrAllocator &A) {
}
void *operator new[](size_t Sz, BumpPtrAllocator &A, char C) {
auto *Ptr = reinterpret_cast<char *>(A.allocate(Sz));
memSet(Ptr, C, Sz);
memset(Ptr, C, Sz);
return Ptr;
}
// Only called during exception unwinding (useless). We must manually dealloc.
@@ -1438,7 +1438,7 @@ int openProfile() {
/// Where 0xdeadbeef is this function address and PROCESSNAME your binary file
/// name.
extern "C" void __bolt_instr_clear_counters() {
memSet(reinterpret_cast<char *>(__bolt_instr_locations), 0,
memset(reinterpret_cast<char *>(__bolt_instr_locations), 0,
__bolt_num_counters * 8);
for (int I = 0; I < __bolt_instr_num_ind_calls; ++I)
GlobalIndCallCounters[I].resetCounters();