[tree-ssa] Copy prop into virtual operands

Zack Weinberg zack@codesourcery.com
Tue Jul 29 17:34:00 GMT 2003


law@redhat.com writes:

>   1. We only propagate SSA_NAMEs in the VUSES/VDEFs.  Propagating a constant
>      into a virtual operand seems extremely wrong to me.

Could you explain why?  Naively, it seems desirable to propagate
constants everywhere one possibly can.

zw



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