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Lithium uses indexes after the maximium value ID in the HGraph as indexes of virtual registers and assumes that the maximum value ID does not change. The IsStandardConstant and GetConstantXX functions could add constants to HGraph, which aliased virtual registers with real values. This could confuse the register allocator to think that a value in a virtual register is tagged and to incorrectly set it in the pointer map. BUG=298269 TEST=mjsunit/regress/regress-298269.js R=verwaest@chromium.org Review URL: https://chromiumcodereview.appspot.com/66693002 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17599 ce2b1a6d-e550-0410-aec6-3dcde31c8c00 |
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