diff options
| author | Taylor Simpson <tsimpson@quicinc.com> | 2022-11-08 08:28:59 -0800 |
|---|---|---|
| committer | Taylor Simpson <tsimpson@quicinc.com> | 2022-12-16 10:10:28 -0800 |
| commit | fb67c2bf24f4399bb0347580324740409e1bb2d7 (patch) | |
| tree | 6ecc49dca5f7520bd2ebe8d804f732e107565eb0 /target/hexagon/gen_helper_protos.py | |
| parent | 8e8a85c14eed845346f64431da6417869f88c470 (diff) | |
Hexagon (target/hexagon) Only use branch_taken when packet has multi cof
When a packet has more than one change-of-flow instruction, only the first
one to branch is considered. We use the branch_taken variable to keep
track of this.
However, when there is a single cof instruction, we don't need the same
amount of bookkeeping.
We add the pkt_has_multi_cof member to the Packet structure, and pass this
information to the needed functions.
When there is a generated helper function with cof, the generator will
pass this pkt_has_multi_cof as a runtime value.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-5-tsimpson@quicinc.com>
Diffstat (limited to 'target/hexagon/gen_helper_protos.py')
| -rwxr-xr-x | target/hexagon/gen_helper_protos.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/target/hexagon/gen_helper_protos.py b/target/hexagon/gen_helper_protos.py index 3b4e993fd1..8c6b36d8d8 100755 --- a/target/hexagon/gen_helper_protos.py +++ b/target/hexagon/gen_helper_protos.py @@ -1,7 +1,7 @@ #!/usr/bin/env python3 ## -## Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved. +## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved. ## ## This program is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published by @@ -82,6 +82,7 @@ def gen_helper_prototype(f, tag, tagregs, tagimms): ## Figure out how many arguments the helper will take if (numscalarresults == 0): def_helper_size = len(regs)+len(imms)+numscalarreadwrite+1 + if hex_common.need_pkt_has_multi_cof(tag): def_helper_size += 1 if hex_common.need_part1(tag): def_helper_size += 1 if hex_common.need_slot(tag): def_helper_size += 1 f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag)) @@ -89,6 +90,7 @@ def gen_helper_prototype(f, tag, tagregs, tagimms): f.write(', void' ) else: def_helper_size = len(regs)+len(imms)+numscalarreadwrite + if hex_common.need_pkt_has_multi_cof(tag): def_helper_size += 1 if hex_common.need_part1(tag): def_helper_size += 1 if hex_common.need_slot(tag): def_helper_size += 1 f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag)) @@ -126,7 +128,9 @@ def gen_helper_prototype(f, tag, tagregs, tagimms): for immlett,bits,immshift in imms: f.write(", s32") - ## Add the arguments for the instruction slot and part1 (if needed) + ## Add the arguments for the instruction pkt_has_multi_cof, slot and + ## part1 (if needed) + if hex_common.need_pkt_has_multi_cof(tag): f.write(', i32') if hex_common.need_slot(tag): f.write(', i32' ) if hex_common.need_part1(tag): f.write(' , i32' ) f.write(')\n') |