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Unified Diff: src/hydrogen-check-elimination.cc

Issue 238773002: Reland "Track field types.". (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Properly handlified... Created 6 years, 8 months ago
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Index: src/hydrogen-check-elimination.cc
diff --git a/src/hydrogen-check-elimination.cc b/src/hydrogen-check-elimination.cc
index 52a549299a24e7913a59aeb656e7e55c87c013fc..4fd769f9241e0186c5158067d82caa84ee1ccd4c 100644
--- a/src/hydrogen-check-elimination.cc
+++ b/src/hydrogen-check-elimination.cc
@@ -382,7 +382,13 @@ class HCheckTable : public ZoneObject {
void ReduceLoadNamedField(HLoadNamedField* instr) {
// Reduce a load of the map field when it is known to be a constant.
- if (!IsMapAccess(instr->access())) return;
+ if (!IsMapAccess(instr->access())) {
+ // Check if we introduce a map here.
+ if (!instr->map().IsNull()) {
+ Insert(instr, instr, instr->map());
+ }
+ return;
+ }
HValue* object = instr->object()->ActualValue();
MapSet maps = FindMaps(object);
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