pvanhout 490a867f16 [GlobalISel] Also set dead flags of implicit defs added by BuildMI
BuildMI automatically adds the implicit operands of the
instruction. This meant we couldn''t set the dead flag on
dead implicit defs in that case.

Fix it by introducing an opcode to mark a given implicit
def as dead.

Fixes #64565

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D157515
2023-08-11 08:38:37 +02:00
..