archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 15:24:43 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6695049: (coll) Create an x86 intrinsic for Arrays.equals

Browse source 
Intrinsify java/util/Arrays.equals(char[], char[])

Reviewed-by: kvn, never
This commit is contained in:
Chuck Rasbold 2008-05-29 16:22:09 -07:00
parent a1f50998ae
commit 2e672ac9bf
12 changed files with 225 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

9
hotspot/src/share/vm/opto/memnode.cpp
View file

@ -156,7 +156,7 @@ static Node *step_through_mergemem(PhaseGVN *phase, MergeMemNode *mmem, const T
phase->C->must_alias(adr_check, alias_idx );
// Sometimes dead array references collapse to a[-1], a[-2], or a[-3]
if( !consistent && adr_check != NULL && !adr_check->empty() &&
tp->isa_aryptr() && tp->offset() == Type::OffsetBot &&
tp->isa_aryptr() && tp->offset() == Type::OffsetBot &&
adr_check->isa_aryptr() && adr_check->offset() != Type::OffsetBot &&
( adr_check->offset() == arrayOopDesc::length_offset_in_bytes() ||
adr_check->offset() == oopDesc::klass_offset_in_bytes() ||
@ -2394,6 +2394,13 @@ Node *StrCompNode::Ideal(PhaseGVN *phase, bool can_reshape){
return remove_dead_region(phase, can_reshape) ? this : NULL;
}
//------------------------------Ideal------------------------------------------
// Return a node which is more "ideal" than the current node. Strip out
// control copies
Node *AryEqNode::Ideal(PhaseGVN *phase, bool can_reshape){
return remove_dead_region(phase, can_reshape) ? this : NULL;
}
//=============================================================================
MemBarNode::MemBarNode(Compile* C, int alias_idx, Node* precedent)