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2018-07-09tcg: Restrict check_size_impl to multiples of the line sizeRichard Henderson
Normally this is automatic in the size restrictions that are placed on vector sizes coming from the implementation. However, for the legitimate size tuple [oprsz=8, maxsz=32], we need to clear the final 24 bytes of the vector register. Without this check, do_dup selects TCG_TYPE_V128 and clears only 16 bytes. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180705191929.30773-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-16tcg: Add choose_vector_sizeRichard Henderson
This unifies 5 copies of checks for supported vector size, and in the process fixes a missing check in tcg_gen_gvec_2s. This lead to an assertion failure for 64-bit vector multiply, which is not available in the AVX instruction set. Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic vector helpers with a scalar operandRichard Henderson
Use dup to convert a non-constant scalar to a third vector. Add addition, multiplication, and logical operations with an immediate. Add addition, subtraction, multiplication, and logical operations with a non-constant scalar. Allow for the front-end to build operations in which the scalar operand comes first. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic helpers for saturating arithmeticRichard Henderson
No vector ops as yet. SSE only has direct support for 8- and 16-bit saturation; handling 32- and 64-bit saturation is much more expensive. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic vector ops for multiplicationRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic vector ops for comparisonsRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic vector ops for constant shiftsRichard Henderson
Opcodes are added for scalar and vector shifts, but considering the varied semantics of these do not expose them to the front ends. Do go ahead and provide them in case they are needed for backend expansion. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-02-08tcg: Add generic vector expandersRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>