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8230428: Cleanup dead CastIP node code in formssel.cpp

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Removed dead code.

Reviewed-by: roland
This commit is contained in:
Tobias Hartmann 2019-09-03 10:03:13 +02:00
parent 5ded63ef02
commit 47e005582b
1 changed files with 3 additions and 30 deletions
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31
src/hotspot/share/adlc/formssel.cpp
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@ -4007,40 +4007,13 @@ bool MatchRule::is_chain_rule(FormDict &globals) const {
}
int MatchRule::is_ideal_copy() const {
if( _rChild ) {
const char *opType = _rChild->_opType;
#if 1
if( strcmp(opType,"CastIP")==0 )
if (is_chain_rule(_AD.globalNames()) &&
_lChild && strncmp(_lChild->_opType, "stackSlot", 9) == 0) {
return 1;
#else
if( strcmp(opType,"CastII")==0 )
return 1;
// Do not treat *CastPP this way, because it
// may transfer a raw pointer to an oop.
// If the register allocator were to coalesce this
// into a single LRG, the GC maps would be incorrect.
//if( strcmp(opType,"CastPP")==0 )
// return 1;
//if( strcmp(opType,"CheckCastPP")==0 )
// return 1;
//
// Do not treat CastX2P or CastP2X this way, because
// raw pointers and int types are treated differently
// when saving local & stack info for safepoints in
// Output().
//if( strcmp(opType,"CastX2P")==0 )
// return 1;
//if( strcmp(opType,"CastP2X")==0 )
// return 1;
#endif
}
if( is_chain_rule(_AD.globalNames()) &&
_lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 )
return 1;
return 0;
}
int MatchRule::is_expensive() const {
if( _rChild ) {
const char *opType = _rChild->_opType;