55bdae03cc
For the instructions we parse with brw_gram.y, don't unconditionally
call brw_eu_inst_set_cond_modifier(). Do it like we do in
brw_generator::generate_code() and only call it if we have a
cond_modifier to set.
Why? Because for ONE_SRC instructions, CondCtrl (bits 95:92) only
exists if Src.IsImm is false. If Src.Imm is true, then bits 95:64 are
actually Src0.ImmValue[63:32]. If we unconditionally call
brw_eu_inst_set_cond_modifier(), we'll end up zeroing bits 95:92 for
ONE_SRC instructions with 64bit immediates. See BSpec page
Structure_EU_INSTRUCTION_BASIC_ONE_SRC (56880).
This issue can be reproduced with src/intel/executor if you try to
have the following instruction:
mov(16) g10<1>Q 0xfedcba9876543210:Q { align1 WE_all 1H };
our parser will end up zeroing the top bits, so the value of the
immediate will be 0x0edcba9876543210.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33559>
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