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tcg: Implement gvec support for rotate by scalar

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No host backend support yet, but the interfaces for rotls
are in place.  Only implement left-rotate for now, as the
only known use of vector rotate by scalar is s390x, so any
right-rotate would be unused and untestable.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson committed 2020-06-02 08:42:37 -07:00
1 parent 3d5bb2ea5c
commit 23850a74af
10 files changed
+37
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include/tcg/tcg-op-gvec.h
+2
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@@ -345,6 +345,8 @@ void tcg_gen_gvec_shrs(unsigned vece, uint32_t dofs, uint32_t aofs,
TCGv_i32 shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_sars(unsigned vece, uint32_t dofs, uint32_t aofs,
TCGv_i32 shift, uint32_t oprsz, uint32_t maxsz);
void tcg_gen_gvec_rotls(unsigned vece, uint32_t dofs, uint32_t aofs,
TCGv_i32 shift, uint32_t oprsz, uint32_t maxsz);
/*
* Perform vector shift by vector element, modulo the element size.
include/tcg/tcg-op.h
+1
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@@ -1005,6 +1005,7 @@ void tcg_gen_rotri_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i);
void tcg_gen_shls_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 s);
void tcg_gen_shrs_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 s);
void tcg_gen_sars_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 s);
void tcg_gen_rotls_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 s);
void tcg_gen_shlv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec s);
void tcg_gen_shrv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec s);
include/tcg/tcg-opc.h
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@@ -253,6 +253,7 @@ DEF(rotli_vec, 1, 1, 1, IMPLVEC | IMPL(TCG_TARGET_HAS_roti_vec))
DEF(shls_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_shs_vec))
DEF(shrs_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_shs_vec))
DEF(sars_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_shs_vec))
DEF(rotls_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_rots_vec))
DEF(shlv_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_shv_vec))
DEF(shrv_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_shv_vec))
include/tcg/tcg.h
+1
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@@ -183,6 +183,7 @@ typedef uint64_t TCGRegSet;
#define TCG_TARGET_HAS_andc_vec 0
#define TCG_TARGET_HAS_orc_vec 0
#define TCG_TARGET_HAS_roti_vec 0
#define TCG_TARGET_HAS_rots_vec 0
#define TCG_TARGET_HAS_rotv_vec 0
#define TCG_TARGET_HAS_shi_vec 0
#define TCG_TARGET_HAS_shs_vec 0