Mark subregister defs of Reg with the undef flag.
Synopsis
Declared in <llvm/CodeGen/MachineInstr.h>
void
setRegisterDefReadUndef(
Register Reg,
bool IsUndef = true);Description
Used when a subregister is defined in an otherwise undefined super‐reg.
Parameters
Name |
Description |
Reg |
Super‐register whose subreg defs are updated. |
IsUndef |
Whether to set or clear the undef flag. |
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