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Unified Diff: src/builtins/ia32/builtins-ia32.cc

Issue 2403453002: Revert of [turbofan] Discard the shared code entry in the optimized code map. (Closed)
Patch Set: Created 4 years, 2 months ago
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Index: src/builtins/ia32/builtins-ia32.cc
diff --git a/src/builtins/ia32/builtins-ia32.cc b/src/builtins/ia32/builtins-ia32.cc
index 74b181246b49cf4f0c8f81c2785f0c9c985d4868..29df50a0c7f9bb280dc28eb2b271a043095e703b 100644
--- a/src/builtins/ia32/builtins-ia32.cc
+++ b/src/builtins/ia32/builtins-ia32.cc
@@ -1055,6 +1055,7 @@
// -----------------------------------
// First lookup code, maybe we don't need to compile!
Label gotta_call_runtime, gotta_call_runtime_no_stack;
+ Label maybe_call_runtime;
Label try_shared;
Label loop_top, loop_bottom;
@@ -1117,12 +1118,15 @@
__ mov(entry, FieldOperand(map, index, times_half_pointer_size,
SharedFunctionInfo::kOffsetToPreviousCachedCode));
__ mov(entry, FieldOperand(entry, WeakCell::kValueOffset));
- __ JumpIfSmi(entry, &try_shared);
+ __ JumpIfSmi(entry, &maybe_call_runtime);
// Found literals and code. Get them into the closure and return.
__ pop(closure);
// Store code entry in the closure.
__ lea(entry, FieldOperand(entry, Code::kHeaderSize));
+
+ Label install_optimized_code_and_tailcall;
+ __ bind(&install_optimized_code_and_tailcall);
__ mov(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
__ RecordWriteCodeEntryField(closure, entry, eax);
@@ -1156,8 +1160,20 @@
// We found neither literals nor code.
__ jmp(&gotta_call_runtime);
+ __ bind(&maybe_call_runtime);
+ __ pop(closure);
+
+ // Last possibility. Check the context free optimized code map entry.
+ __ mov(entry, FieldOperand(map, FixedArray::kHeaderSize +
+ SharedFunctionInfo::kSharedCodeIndex));
+ __ mov(entry, FieldOperand(entry, WeakCell::kValueOffset));
+ __ JumpIfSmi(entry, &try_shared);
+
+ // Store code entry in the closure.
+ __ lea(entry, FieldOperand(entry, Code::kHeaderSize));
+ __ jmp(&install_optimized_code_and_tailcall);
+
__ bind(&try_shared);
- __ pop(closure);
__ pop(new_target);
__ pop(argument_count);
// Is the full code valid?
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