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96217
2018 Apr 12
2
How to specify the RegisterClass of an IMPLICIT_DEF?
Hi,
I'm implementing the built_vector as an IMPLICIT_DEF followed by INSERT_SUBREGs. This approach is the one of the SPARC architecture.
def : Pat<(build_vector (f32 fpimm:$a1), (f32 fpimm:$a2)),
(INSERT_SUBREG(INSERT_SUBREG (v2f32 (IMPLICIT_DEF)),
(i32 (COPY_TO_REGCLASS (MOVSUTO_A_iSLo (bitcast_fpimm_to_i32 f32:$a1)), FPUaOffsetClass)), A_UNIT_PART),