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Simple assembler optimization #19

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Shadlock0133 opened this issue Nov 14, 2018 · 1 comment
Closed

Simple assembler optimization #19

Shadlock0133 opened this issue Nov 14, 2018 · 1 comment

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@Shadlock0133
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Currently for li a0, 0xff000000 assembler will generate two instructions lui x10 1044480; addi x10 x10 0. The second instruction is practically a nop.

A simple check in assembling immediate instructions with the same register and value of zero (for addi, ori, xori, slli, srli, srai) should be enough for starters.
mortbopet added a commit that referenced this issue Nov 15, 2018
@mortbopet
Optimize li pseudo-instruction expansion #19
d1d129a
@mortbopet
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Thank you for mentioning it! The optimization is implemented in the referenced commit

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@Shadlock0133 @mortbopet