Craig Topper 24b3c2d058 [BreakFalseDeps] Harden pickBestRegisterForUndef against changing tied operands or physical registers that aren't renamable. ...

I don't have any test cases since X86 doesn't return any tied
operands from getUndefRegClearance today. But conceivably we could
want BreakFalseDeps to insert a dependency breaking XOR for
a tied operand in the future.

2020-05-09 15:37:31 -07:00

9.8 KiB

Raw Blame History

View Raw