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6797305: Add LoadUB and LoadUI opcode class

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Add a LoadUB (unsigned byte) and LoadUI (unsigned int) opcode class so we have these load optimizations in the first place and do not need to handle them in the matcher.

Reviewed-by: never, kvn
This commit is contained in:
Christian Thalinger 2009-03-09 03:17:11 -07:00
parent 26d192003f
commit 89cea91c48
17 changed files with 726 additions and 186 deletions
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12
hotspot/src/share/vm/adlc/formssel.cpp
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@ -3310,8 +3310,8 @@ int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
static const char *needs_ideal_memory_list[] = {
"StoreI","StoreL","StoreP","StoreN","StoreD","StoreF" ,
"StoreB","StoreC","Store" ,"StoreFP",
"LoadI" ,"LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" ,
"LoadB" ,"LoadUS" ,"LoadS" ,"Load" ,
"LoadI", "LoadUI2L", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" ,
"LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" ,
"Store4I","Store2I","Store2L","Store2D","Store4F","Store2F","Store16B",
"Store8B","Store4B","Store8C","Store4C","Store2C",
"Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" ,
@ -3431,10 +3431,16 @@ int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, Matc
const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL;
const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL;
const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL;
DataType data_type = Form::none;
if (form->is_operand()) {
// Make sure the loadX matches the type of the reg
data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals));
}
// Detect reg vs (loadX memory)
if( form->is_cisc_reg(globals)
&& form2_inst
&& (is_load_from_memory(mRule2->_opType) != Form::none) // reg vs. (load memory)
&& data_type != Form::none
&& (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory)
&& (name_left != NULL) // NOT (load)
&& (name_right == NULL) ) { // NOT (load memory foo)
const Form *form2_left = name_left ? globals[name_left] : NULL;