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tcg/mips: Allow JAL to be out of range in tcg_out_bswap_subr

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Weaning off of unique alignment requirements, so allow JAL
to not reach the target.  TCG_TMP1 is always available for
use as a scratch because it is clobbered by the subroutine
being called.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-08-06 08:03:45 -10:00
parent 10d4af5810
commit d7fc9f48c3
1 changed files with 4 additions and 2 deletions
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6
tcg/mips/tcg-target.c.inc
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@ -573,8 +573,10 @@ static void tcg_out_bswap16(TCGContext *s, TCGReg ret, TCGReg arg, int flags)
static void tcg_out_bswap_subr(TCGContext *s, const tcg_insn_unit *sub)
{
bool ok = tcg_out_opc_jmp(s, OPC_JAL, sub);
tcg_debug_assert(ok);
if (!tcg_out_opc_jmp(s, OPC_JAL, sub)) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP1, (uintptr_t)sub);
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_TMP1, 0);
}
}
static void tcg_out_bswap32(TCGContext *s, TCGReg ret, TCGReg arg, int flags)