diff options
| author | Nicholas Piggin | 2022-05-19 15:59:07 +0200 |
|---|---|---|
| committer | Daniel Henrique Barboza | 2022-05-26 22:11:33 +0200 |
| commit | fc879703f74851e3e861894a0c4a6902877d0c2c (patch) | |
| tree | c89c90648ed2a06608fa3665051e2b1263e8d262 /tcg | |
| parent | tcg/ppc: ST_ST memory ordering is not provided with eieio (diff) | |
| download | qemu-fc879703f74851e3e861894a0c4a6902877d0c2c.tar.gz qemu-fc879703f74851e3e861894a0c4a6902877d0c2c.tar.xz qemu-fc879703f74851e3e861894a0c4a6902877d0c2c.zip | |
tcg/ppc: Optimize memory ordering generation with lwsync
lwsync orders more than just LD_LD, importantly it matches x86 and
s390 default memory ordering.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220519135908.21282-4-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/ppc/tcg-target.c.inc | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index 4750091c9c..de4483e43b 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -1832,11 +1832,14 @@ static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args, static void tcg_out_mb(TCGContext *s, TCGArg a0) { - uint32_t insn = HWSYNC; - a0 &= TCG_MO_ALL; - if (a0 == TCG_MO_LD_LD) { + uint32_t insn; + + if (a0 & TCG_MO_ST_LD) { + insn = HWSYNC; + } else { insn = LWSYNC; } + tcg_out32(s, insn); } |