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bpf: Add documentation for the -mcpu option

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Add documentation describing the meaning and values for the -mcpu
command-line option.

Tested for bpf-unknown-none on x86_64-linux-gnu host.

gcc/ChangeLog:

	* config/bpf/bpf.opt: Add help information for -mcpu.

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
This commit is contained in:
Will Hawkins 2024-02-20 13:33:38 +01:00 • committed by Jose E. Marchesi
parent 98702303e2
commit 97f34ad10d
1 changed files with 2 additions and 0 deletions
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gcc/config/bpf/bpf.opt
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@ -77,9 +77,11 @@ Enable signed move and memory load instructions.
mcpu=
Target RejectNegative Joined Var(bpf_isa) Enum(bpf_isa) Init(ISA_V4)
Select the eBPF ISA version to target in code generation.
Enum
Name(bpf_isa) Type(enum bpf_isa_version)
Valid ISA versions (for use with the -mcpu= option)
EnumValue
Enum(bpf_isa) String(v1) Value(ISA_V1)