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| author | Cliff Click <cliffc@acm.org> | 2026-10-19 09:33:28 -0700 |
|---|---|---|
| committer | Cliff Click <cliffc@acm.org> | 2026-10-19 09:33:28 -0700 |
| commit | ef8d9c4630db6af79c25526c8e80c54a48df4e39 (patch) | |
| tree | c21474ceab3af7d8661ae93f7fc49002d96fcd43 /chapter25/src/main/java | |
| parent | 300d2a9c3672acacc8bdd8d5370a424651a00571 (diff) | |
| download | Simple-ef8d9c4630db6af79c25526c8e80c54a48df4e39.tar.gz Simple-ef8d9c4630db6af79c25526c8e80c54a48df4e39.zip | |
Fix memory on Load splitting up
Diffstat (limited to 'chapter25/src/main/java')
| -rw-r--r-- | chapter25/src/main/java/com/seaofnodes/simple/node/LoadNode.java | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/chapter25/src/main/java/com/seaofnodes/simple/node/LoadNode.java b/chapter25/src/main/java/com/seaofnodes/simple/node/LoadNode.java index 0a997083..c58bba39 100644 --- a/chapter25/src/main/java/com/seaofnodes/simple/node/LoadNode.java +++ b/chapter25/src/main/java/com/seaofnodes/simple/node/LoadNode.java @@ -169,8 +169,9 @@ public class LoadNode extends MemOpNode { // else ptr.x = e1; : e1; // val = ptr.x; ptr.x = val; if( mem() instanceof MemPhiNode memphi && memphi.region()._type == Type.CONTROL && memphi.nIns()== 3 && - // Array access control must not be moved across the merge. - in(0)==null && + // Retain control on both copies only if it dominates both paths. + // The Region itself, or a later range check, cannot move to its inputs. + (in(0)==null || cfg0().domLCA(memphi.region().idom(this),this)==cfg0()) && // Offset can be hoisted off() instanceof ConstantNode && // Pointer can be hoisted |