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* [Bug target/110781] New: bpf: make use of the V4 long-range jump instruction (jal/gotol)
@ 2023-07-23 23:38 jemarch at gcc dot gnu.org
2023-07-27 15:25 ` [Bug target/110781] " jemarch at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: jemarch at gcc dot gnu.org @ 2023-07-23 23:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110781
Bug ID: 110781
Summary: bpf: make use of the V4 long-range jump instruction
(jal/gotol)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jemarch at gcc dot gnu.org
Target Milestone: ---
The BPF V4 ISA introduces a new unconditional jump instruction (jal/gotol) that
has a much wide target range compared to the previous jal/goto instruction:
from PC-relative 16-bit to PC-relative 32-bit.
We shall make GCC to generate this instruction when it needs to emit jumps that
would be too long for the regular ja/goto instruction. But only if -mcpu=v4 is
used.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/110781] bpf: make use of the V4 long-range jump instruction (jal/gotol)
2023-07-23 23:38 [Bug target/110781] New: bpf: make use of the V4 long-range jump instruction (jal/gotol) jemarch at gcc dot gnu.org
@ 2023-07-27 15:25 ` jemarch at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: jemarch at gcc dot gnu.org @ 2023-07-27 15:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110781
Jose E. Marchesi <jemarch at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |MOVED
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Jose E. Marchesi <jemarch at gcc dot gnu.org> ---
This is actually the assembler's business. Moved to
https://sourceware.org/bugzilla/show_bug.cgi?id=30690
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-07-23 23:38 [Bug target/110781] New: bpf: make use of the V4 long-range jump instruction (jal/gotol) jemarch at gcc dot gnu.org
2023-07-27 15:25 ` [Bug target/110781] " jemarch at gcc dot gnu.org
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