NEW 170974
Should not need to nop-pad between register allocation and a label 
https://bugs.webkit.org/show_bug.cgi?id=170974
Summary Should not need to nop-pad between register allocation and a label
Filip Pizlo
Reported 2017-04-18 18:40:17 PDT
If I have code like: GPRTemporary blah GPRReg blahGPR = blah.gpr() MacroAssembler::Label = m_jit.label(); It may currently fail register allocation validation, presumably because the validation thinks that the label is inside the register allocation rather than after it. The current workaround is to insert a nop: GPRTemporary blah GPRReg blahGPR = blah.gpr() m_jit.nop(); MacroAssembler::Label = m_jit.label(); We should probably fix that eventually.
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