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in clang, the result is c.mv a1, a0 c.li a0, -1 c.mv a0, a1 slli zero, a0, 0x11 c.jr ra result is incorrect, we need to add a0 into clobber list.
zakk0610
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kito-cheng
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I believe it's better and correct way to make sure the value is hold in a0.
nick-knight
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Looks good to me.
FWIW, this is how @ericlove implemented this hack more than 15 months ago: 30fd755#diff-bc73b80291779f6c896ddcb3e37b2ed8567475c138048c14f5318e9771340fa3
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We need to add
a0into clobber list.In clang, the result is incorrect.
we could rewrite it and avoid additional
mvinstruction.