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| author | Richard Henderson | 2019-05-14 21:32:50 +0200 |
|---|---|---|
| committer | Richard Henderson | 2019-05-22 21:09:43 +0200 |
| commit | 7e308e003e5b6ddd3130e09711e1d33693230696 (patch) | |
| tree | 18f62e4f7327f6dc30ce2f8ecdfe02c38a09e2d0 /tcg/aarch64 | |
| parent | tcg/aarch64: Split up is_fimm (diff) | |
| download | qemu-7e308e003e5b6ddd3130e09711e1d33693230696.tar.gz qemu-7e308e003e5b6ddd3130e09711e1d33693230696.tar.xz qemu-7e308e003e5b6ddd3130e09711e1d33693230696.zip | |
tcg/aarch64: Use MVNI in tcg_out_dupi_vec
The compliment of a subset of immediates can be computed
with a single instruction.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/aarch64')
| -rw-r--r-- | tcg/aarch64/tcg-target.inc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c index 1422dfebe2..0b8b733805 100644 --- a/tcg/aarch64/tcg-target.inc.c +++ b/tcg/aarch64/tcg-target.inc.c @@ -494,6 +494,7 @@ typedef enum { /* AdvSIMD modified immediate */ I3606_MOVI = 0x0f000400, + I3606_MVNI = 0x2f000400, /* AdvSIMD shift by immediate */ I3614_SSHR = 0x0f000400, @@ -838,8 +839,13 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, tcg_out_insn(s, 3606, MOVI, q, rd, 0, cmode, imm8); return; } + if (is_shimm16(~v16, &cmode, &imm8)) { + tcg_out_insn(s, 3606, MVNI, q, rd, 0, cmode, imm8); + return; + } } else if (v64 == dup_const(MO_32, v64)) { uint32_t v32 = v64; + uint32_t n32 = ~v32; if (is_shimm32(v32, &cmode, &imm8) || is_soimm32(v32, &cmode, &imm8) || @@ -847,6 +853,11 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, tcg_out_insn(s, 3606, MOVI, q, rd, 0, cmode, imm8); return; } + if (is_shimm32(n32, &cmode, &imm8) || + is_soimm32(n32, &cmode, &imm8)) { + tcg_out_insn(s, 3606, MVNI, q, rd, 0, cmode, imm8); + return; + } } else if (is_fimm64(v64, &cmode, &imm8)) { tcg_out_insn(s, 3606, MOVI, q, rd, 1, cmode, imm8); return; |