diff options
| author | Richard Henderson | 2019-05-17 00:11:17 +0200 |
|---|---|---|
| committer | Richard Henderson | 2019-05-22 21:09:43 +0200 |
| commit | 7b60ef3264e9627ac6efb34e9a6130647e9b55c0 (patch) | |
| tree | b0b8601e407cf69007a23ddacdfad5f034373f01 /tcg/i386 | |
| parent | Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20190521-3' into staging (diff) | |
| download | qemu-7b60ef3264e9627ac6efb34e9a6130647e9b55c0.tar.gz qemu-7b60ef3264e9627ac6efb34e9a6130647e9b55c0.tar.xz qemu-7b60ef3264e9627ac6efb34e9a6130647e9b55c0.zip | |
tcg/i386: Fix dupi/dupm for avx1 and 32-bit hosts
The VBROADCASTSD instruction only allows %ymm registers as destination.
Rather than forcing VEX.L and writing to the entire 256-bit register,
revert to using MOVDDUP with an %xmm register. This is sufficient for
an avx1 host since we do not support TCG_TYPE_V256 for that case.
Also fix the 32-bit avx2, which should have used VPBROADCASTW.
Fixes: 1e262b49b533
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/i386')
| -rw-r--r-- | tcg/i386/tcg-target.inc.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c index aafd01cb49..b3601446cd 100644 --- a/tcg/i386/tcg-target.inc.c +++ b/tcg/i386/tcg-target.inc.c @@ -358,6 +358,7 @@ static inline int tcg_target_const_match(tcg_target_long val, TCGType type, #define OPC_MOVBE_MyGy (0xf1 | P_EXT38) #define OPC_MOVD_VyEy (0x6e | P_EXT | P_DATA16) #define OPC_MOVD_EyVy (0x7e | P_EXT | P_DATA16) +#define OPC_MOVDDUP (0x12 | P_EXT | P_SIMDF2) #define OPC_MOVDQA_VxWx (0x6f | P_EXT | P_DATA16) #define OPC_MOVDQA_WxVx (0x7f | P_EXT | P_DATA16) #define OPC_MOVDQU_VxWx (0x6f | P_EXT | P_SIMDF3) @@ -921,7 +922,7 @@ static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, } else { switch (vece) { case MO_64: - tcg_out_vex_modrm_offset(s, OPC_VBROADCASTSD, r, 0, base, offset); + tcg_out_vex_modrm_offset(s, OPC_MOVDDUP, r, 0, base, offset); break; case MO_32: tcg_out_vex_modrm_offset(s, OPC_VBROADCASTSS, r, 0, base, offset); @@ -963,12 +964,12 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, } else if (have_avx2) { tcg_out_vex_modrm_pool(s, OPC_VPBROADCASTQ + vex_l, ret); } else { - tcg_out_vex_modrm_pool(s, OPC_VBROADCASTSD, ret); + tcg_out_vex_modrm_pool(s, OPC_MOVDDUP, ret); } new_pool_label(s, arg, R_386_PC32, s->code_ptr - 4, -4); } else { if (have_avx2) { - tcg_out_vex_modrm_pool(s, OPC_VBROADCASTSD + vex_l, ret); + tcg_out_vex_modrm_pool(s, OPC_VPBROADCASTW + vex_l, ret); } else { tcg_out_vex_modrm_pool(s, OPC_VBROADCASTSS, ret); } |