NEW 73727
MacroAssembler should support zeroing registers 
https://bugs.webkit.org/show_bug.cgi?id=73727
Summary MacroAssembler should support zeroing registers
Oliver Hunt
Reported 2011-12-02 17:53:17 PST
Currently we use a mix of load ImmPtr(0) and xorPtr(r,r) to zero the contents of a register. Given that these perform differently on different architectures it probably makes sense to simply have a MacroAssembler API to zero a register that does the most efficient thing for the target platform.
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