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speedups for compilation of initializers in -O gen-C++ generated code

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This commit is contained in:
Vern Paxson 2024-08-13 14:43:17 -07:00
parent 6daf9d5b88
commit 0ca2f9a8b2
6 changed files with 139 additions and 50 deletions
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20
src/script_opt/CPP/RuntimeInits.cc
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@ -465,12 +465,12 @@ void CPP_GlobalInit::Generate(InitsManager* im, std::vector<void*>& /* inits_vec
global->SetAttrs(im->Attributes(attrs));
}
void generate_indices_set(int* inits, std::vector<std::vector<int>>& indices_set) {
size_t generate_indices_set(int* inits, std::vector<std::vector<int>>& indices_set) {
// First figure out how many groups of indices there are, so we
// can pre-allocate the outer vector.
auto i_ptr = inits;
int num_inits = 0;
while ( *i_ptr >= 0 ) {
while ( *i_ptr != END_OF_VEC_VEC && *i_ptr != END_OF_VEC_VEC_VEC ) {
++num_inits;
int n = *i_ptr;
i_ptr += n + 1; // skip over vector elements
@ -479,7 +479,7 @@ void generate_indices_set(int* inits, std::vector<std::vector<int>>& indices_set
indices_set.reserve(num_inits);
i_ptr = inits;
while ( *i_ptr >= 0 ) {
while ( *i_ptr != END_OF_VEC_VEC ) {
int n = *i_ptr;
++i_ptr;
std::vector<int> indices;
@ -490,6 +490,20 @@ void generate_indices_set(int* inits, std::vector<std::vector<int>>& indices_set
indices_set.emplace_back(std::move(indices));
}
return i_ptr - inits + 1;
}
std::vector<std::vector<std::vector<int>>> generate_indices_set(int* inits) {
std::vector<std::vector<std::vector<int>>> indices_set;
while ( *inits != END_OF_VEC_VEC_VEC ) {
std::vector<std::vector<int>> cohort_inits;
inits += generate_indices_set(inits, cohort_inits);
indices_set.push_back(std::move(cohort_inits));
}
return indices_set;
}
} // namespace zeek::detail