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In the x86_64 System V ABI, fcd doesn't know that rax can be used as an input register

Open fay59 opened this issue 8 years ago • 0 comments

In the x86_64 System V ABI, the rax register is used to pass in the number of vector registers that contain parameters. Fcd doesn't know this and proliferates undef values when that register is read before being set.

fay59 avatar Mar 22 '17 07:03 fay59