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6805427: adlc compiler may generate incorrect machnode emission code

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Reviewed-by: kvn, twisti
This commit is contained in:
Tom Rodriguez 2009-02-25 10:53:14 -08:00
parent decdeea77d
commit a82243d887
2 changed files with 18 additions and 10 deletions
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19
hotspot/src/share/vm/adlc/formssel.cpp
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@ -1217,13 +1217,17 @@ void InstructForm::rep_var_format(FILE *fp, const char *rep_var) {
// Seach through operands to determine parameters unique positions.
void InstructForm::set_unique_opnds() {
uint* uniq_idx = NULL;
uint nopnds = num_opnds();
int nopnds = num_opnds();
uint num_uniq = nopnds;
uint i;
int i;
_uniq_idx_length = 0;
if ( nopnds > 0 ) {
// Allocate index array with reserve.
uniq_idx = (uint*) malloc(sizeof(uint)*(nopnds + 2));
for( i = 0; i < nopnds+2; i++ ) {
// Allocate index array. Worst case we're mapping from each
// component back to an index and any DEF always goes at 0 so the
// length of the array has to be the number of components + 1.
_uniq_idx_length = _components.count() + 1;
uniq_idx = (uint*) malloc(sizeof(uint)*(_uniq_idx_length));
for( i = 0; i < _uniq_idx_length; i++ ) {
uniq_idx[i] = i;
}
}
@ -1238,8 +1242,8 @@ void InstructForm::set_unique_opnds() {
_parameters.reset();
while( (name = _parameters.iter()) != NULL ) {
count = 0;
uint position = 0;
uint uniq_position = 0;
int position = 0;
int uniq_position = 0;
_components.reset();
Component *comp = NULL;
if( sets_result() ) {
@ -1255,6 +1259,7 @@ void InstructForm::set_unique_opnds() {
}
if( strcmp(name, comp->_name)==0 ) {
if( ++count > 1 ) {
assert(position < _uniq_idx_length, "out of bounds");
uniq_idx[position] = uniq_position;
has_dupl_use = true;
} else {