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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-11-01 11:22:35 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-11-01 11:22:35 +0000 |
| commit | ef339d6e2e846ba7ff544def1d79f10762da223d (patch) | |
| tree | e5beefe9a80252715c035780b1f4819d67302440 /gcc/emit-rtl.h | |
| parent | 06ec586d2c384ba016c784de3279f3770d9f399d (diff) | |
Add a VEC_SERIES rtl code
This patch adds an rtl representation of a vector linear series
of the form:
a[I] = BASE + I * STEP
Like vec_duplicate;
- the new rtx can be used for both constant and non-constant vectors
- when used for constant vectors it is wrapped in a (const ...)
- the constant form is only used for variable-length vectors;
fixed-length vectors still use CONST_VECTOR
At the moment the code is restricted to integer elements, to avoid
concerns over floating-point rounding.
2017-11-01 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* doc/rtl.texi (vec_series): Document.
(const): Say that the operand can be a vec_series.
* rtl.def (VEC_SERIES): New rtx code.
* rtl.h (const_vec_series_p_1): Declare.
(const_vec_series_p): New function.
* emit-rtl.h (gen_const_vec_series): Declare.
(gen_vec_series): Likewise.
* emit-rtl.c (const_vec_series_p_1, gen_const_vec_series)
(gen_vec_series): Likewise.
* optabs.c (expand_mult_highpart): Use gen_const_vec_series.
* simplify-rtx.c (simplify_unary_operation): Handle negations
of vector series.
(simplify_binary_operation_series): New function.
(simplify_binary_operation_1): Use it. Handle VEC_SERIES.
(test_vector_ops_series): New function.
(test_vector_ops): Call it.
* config/powerpcspe/altivec.md (altivec_lvsl): Use
gen_const_vec_series.
(altivec_lvsr): Likewise.
* config/rs6000/altivec.md (altivec_lvsl, altivec_lvsr): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r254297
Diffstat (limited to 'gcc/emit-rtl.h')
| -rw-r--r-- | gcc/emit-rtl.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/emit-rtl.h b/gcc/emit-rtl.h index c79f740c504..ab320e65e21 100644 --- a/gcc/emit-rtl.h +++ b/gcc/emit-rtl.h @@ -441,6 +441,9 @@ get_max_uid (void) extern rtx gen_const_vec_duplicate (machine_mode, rtx); extern rtx gen_vec_duplicate (machine_mode, rtx); +extern rtx gen_const_vec_series (machine_mode, rtx, rtx); +extern rtx gen_vec_series (machine_mode, rtx, rtx); + extern void set_decl_incoming_rtl (tree, rtx, bool); /* Return a memory reference like MEMREF, but with its mode changed |