infernap12/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2026-02-23 08:45:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

safepoints do not have a memory output

Browse Source
This commit is contained in:
Quan Anh Mai 2025-12-13 22:04:39 +07:00
parent 918d7fe726
commit ce3ca6ae45
1 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/hotspot/share/opto/memnode.cpp
View File

@ -979,12 +979,6 @@ Node* MemNode::find_previous_store(PhaseValues* phase) {
int alias_idx = phase->C->get_alias_index(adr_type());
mem = mem->as_MergeMem()->memory_at(alias_idx);
continue;
} else if (mem->is_Proj() && mem->in(0)->Opcode() == Op_SafePoint) {
// Pure safepoints do not modify heap memory
if (base != nullptr) {
mem = mem->in(0)->in(TypeFunc::Memory);
continue;
}
} else if (mem->is_Proj() && mem->in(0)->is_Call()) {
// We can walk past a call if we can prove that the call does not modify the memory we are
// accessing, this is the case if the allocation has not escaped at this call