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Unified Diff: src/ia32/lithium-codegen-ia32.cc

Issue 1108313003: Add HArrayBufferNotNeutered instruction (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: updates Created 5 years, 8 months ago
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Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 5af19d01ef4d5592c2498c92001d805b1e68ac59..d4b8b6186d677e50e8fd1098a1e944421b2a7e1e 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4973,6 +4973,22 @@ void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) {
}
+void LCodeGen::DoCheckArrayBufferNotNeutered(
+ LCheckArrayBufferNotNeutered* instr) {
+ Register view = ToRegister(instr->view());
+ Register scratch = ToRegister(instr->scratch());
+
+ Label has_no_buffer;
+ __ mov(scratch, FieldOperand(view, JSArrayBufferView::kBufferOffset));
+ __ JumpIfSmi(scratch, &has_no_buffer);
+ __ test_b(FieldOperand(scratch, JSArrayBuffer::kBitFieldOffset),
+ 1 << JSArrayBuffer::WasNeutered::kShift);
+ DeoptimizeIf(not_zero, instr, Deoptimizer::kOutOfBounds);
+
+ __ bind(&has_no_buffer);
+}
+
+
void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) {
Register input = ToRegister(instr->value());
Register temp = ToRegister(instr->temp());

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