src/arm/codegen-arm.cc - Issue 5686006: Add array bound checks to code generated for SwapElements. This fixes a bug t...

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Unified Diff: src/arm/codegen-arm.cc

Issue 5686006: Add array bound checks to code generated for SwapElements. This fixes a bug t... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/

Patch Set: '' Created 10 years ago

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Index: src/arm/codegen-arm.cc

===================================================================

--- src/arm/codegen-arm.cc (revision 6016)

+++ src/arm/codegen-arm.cc (working copy)

@@ -5592,6 +5592,12 @@

__ tst(tmp2, Operand(kSmiTagMask));

deferred->Branch(nz);

+ // Check that both indices are valid.

+ __ ldr(tmp2, FieldMemOperand(object, JSArray::kLengthOffset));

+ __ cmp(tmp2, index1);

+ __ cmp(tmp2, index2, hi);

+ deferred->Branch(ls);

// Bring the offsets into the fixed array in tmp1 into index1 and

// index2.

__ mov(tmp2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));

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