static void FlowConditions( void )
/*************************************
For each block in the program, first "GatherSources" to determine
what the state of the condition codes are on entry to the routine,
then "Traverse" the block, to see if there is an instruction that
sets the condition codes for the conditional branches at the end of
the block correctly, or if the condition codes from previous blocks
are unaffected by the block and will suffice for the final branch.
*/
{
block *blk;
name *zero;
bool change;
zero = AllocIntConst( 0 );
change = true;
for( ;; ) {
for( blk = HeadBlock; blk != NULL; blk = blk->next_block ) {
GatherSources( blk );
change |= Traverse( blk, zero );
}
if( change == false ) break;
change = false;
}
}
void GatherSources(const String& master_path, const String& path_, Vector<int>& parents)
{
RHITCOUNT("GatherSources");
String path = NormalizeSourcePath(path_);
if(sSrcFile.Find(path) >= 0)
return;
int ii = sSrcFile.GetCount();
for(int i = 0; i < parents.GetCount(); i++)
sIncludes.Add(MAKEQWORD(parents[i], ii));
sSrcFile.Add(path, master_path);
parents.Add(ii);
const PPFile& f = GetPPFile(path);
for(int i = 0; i < f.includes.GetCount(); i++) {
String p = GetIncludePath(f.includes[i], GetFileFolder(path));
if(p.GetCount())
GatherSources(master_path, p, parents);
}
parents.Drop();
}
void GatherSources(const String& master_path, const String& path)
{
LTIMING("GatherSources");
Vector<int> parents;
GatherSources(NormalizeSourcePath(master_path), path, parents);
}
