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tcg: Implement gvec support for rotate by immediate

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No host backend support yet, but the interfaces for rotli
are in place.  Canonicalize immediate rotate to the left,
based on a survey of architectures, but provide both left
and right shift interfaces to the translators.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-04-19 18:01:52 -07:00
parent cccdd8c797
commit b0f7e7444c
13 changed files with 150 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/tcg/tcg-op-gvec.h
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@ -334,6 +334,10 @@ void tcg_gen_gvec_shri(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_sari(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_rotli(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_rotri(unsigned vece, uint32_t dofs, uint32_t aofs,
int64_t shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_shls(unsigned vece, uint32_t dofs, uint32_t aofs,
TCGv_i32 shift, uint32_t oprsz, uint32_t maxsz);
@ -388,5 +392,7 @@ void tcg_gen_vec_shr8i_i64(TCGv_i64 d, TCGv_i64 a, int64_t);
void tcg_gen_vec_shr16i_i64(TCGv_i64 d, TCGv_i64 a, int64_t);
void tcg_gen_vec_sar8i_i64(TCGv_i64 d, TCGv_i64 a, int64_t);
void tcg_gen_vec_sar16i_i64(TCGv_i64 d, TCGv_i64 a, int64_t);
void tcg_gen_vec_rotl8i_i64(TCGv_i64 d, TCGv_i64 a, int64_t c);
void tcg_gen_vec_rotl16i_i64(TCGv_i64 d, TCGv_i64 a, int64_t c);
#endif