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| author | Paul Brook <paul@codesourcery.com> | 2010-06-11 20:01:00 +0100 |
|---|---|---|
| committer | Paul Brook <paul@codesourcery.com> | 2010-06-11 20:37:51 +0100 |
| commit | 41ba834146f1d8b9cbc09a9f25f5c6b84bf405d9 (patch) | |
| tree | d6981379bb90fa2d23b452641226a96e66ee1d28 /target-arm | |
| parent | 0e2029a063405091ee34170ef71aa321715e4357 (diff) | |
| download | qemu-41ba834146f1d8b9cbc09a9f25f5c6b84bf405d9.tar.gz | |
NEON vldN optimization
When combining multiple values as part of a NEON array load, do explcit
shift/or rather than using gen_bfi. This voids redundant mask
operations.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 0eccca5cdb..a28e2ff333 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -3854,7 +3854,8 @@ static int disas_neon_ls_insn(CPUState * env, DisasContext *s, uint32_t insn) tcg_gen_addi_i32(addr, addr, stride); tmp2 = gen_ld16u(addr, IS_USER(s)); tcg_gen_addi_i32(addr, addr, stride); - gen_bfi(tmp, tmp, tmp2, 16, 0xffff); + tcg_gen_shli_i32(tmp2, tmp2, 16); + tcg_gen_or_i32(tmp, tmp, tmp2); dead_tmp(tmp2); neon_store_reg(rd, pass, tmp); } else { @@ -3875,7 +3876,8 @@ static int disas_neon_ls_insn(CPUState * env, DisasContext *s, uint32_t insn) if (n == 0) { tmp2 = tmp; } else { - gen_bfi(tmp2, tmp2, tmp, n * 8, 0xff); + tcg_gen_shli_i32(tmp, tmp, n * 8); + tcg_gen_or_i32(tmp2, tmp2, tmp); dead_tmp(tmp); } } |