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DFG PutByValAlias is too aggressive https://bugs.webkit.org/show_bug.cgi?id=90026 <rdar://problem/11751830> Source/JavaScriptCore: Reviewed by Gavin Barraclough. For CSE on normal arrays, we now treat PutByVal as impure. This does not appear to affect performance by much. For CSE on typed arrays, we fix PutByValAlias by making GetByVal speculate that the access is within bounds. This also has the effect of making our out-of-bounds handling consistent with WebCore. * dfg/DFGCSEPhase.cpp: (JSC::DFG::CSEPhase::performNodeCSE): * dfg/DFGGraph.h: (JSC::DFG::Graph::byValIsPure): (JSC::DFG::Graph::clobbersWorld): * dfg/DFGNodeType.h: (DFG): * dfg/DFGSpeculativeJIT.cpp: (JSC::DFG::SpeculativeJIT::compileGetByValOnIntTypedArray): (JSC::DFG::SpeculativeJIT::compileGetByValOnFloatTypedArray): LayoutTests: Reviewed by Gavin Barraclough. * fast/js/dfg-put-by-val-setter-then-get-by-val-expected.txt: Added. * fast/js/dfg-put-by-val-setter-then-get-by-val.html: Added. * fast/js/dfg-uint8clampedarray-out-of-bounds-put-by-val-alias-expected.txt: Added. * fast/js/dfg-uint8clampedarray-out-of-bounds-put-by-val-alias.html: Added. * fast/js/script-tests/dfg-put-by-val-setter-then-get-by-val.js: Added. (foo): (for): * fast/js/script-tests/dfg-uint8clampedarray-out-of-bounds-put-by-val-alias.js: Added. (foo): Canonical link: https://commits.webkit.org/107876@main git-svn-id: https://svn.webkit.org/repository/webkit/trunk@121307 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2012-06-27 01:34:01 +00:00
Tests that out-of-bounds stores to a Uint8ClampedArray that are aliased to out-of-bounds loads don't crash.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS foo(array, 100000000, 42) is undefined
PASS successfullyParsed is true
TEST COMPLETE