a9814e3e08
The set of instructions that require decode_save_opc for unwinding is really fairly small -- only insns that can raise ILLEGAL_INSN at runtime. This includes CSR, anything that uses a *new* fp rounding mode, and many privileged insns. Since unwind info is stored as the difference from the previous insn, storing a 0 for most insns minimizes the size of the unwind info. Booting a debian kernel image to the missing rootfs panic yields - gen code size 22226819/1026886656 + gen code size 21601907/1026886656 on 41k TranslationBlocks, a savings of 610kB or a bit less than 3%. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220604231004.49990-4-richard.henderson@linaro.org> Signed-off-by: Alistair Francis <alistair.francis@wdc.com> |
||
|---|---|---|
| .. | ||
| trans_privileged.c.inc | ||
| trans_rva.c.inc | ||
| trans_rvb.c.inc | ||
| trans_rvd.c.inc | ||
| trans_rvf.c.inc | ||
| trans_rvh.c.inc | ||
| trans_rvi.c.inc | ||
| trans_rvk.c.inc | ||
| trans_rvm.c.inc | ||
| trans_rvv.c.inc | ||
| trans_rvzfh.c.inc | ||
| trans_svinval.c.inc | ||
| trans_xventanacondops.c.inc | ||