This patch adds the vidwdup shape description for vdwdup and viwdup.
It is very similar to viddup, but accounts for the additional 'wrap'
scalar parameter.
2024-08-21 Christophe Lyon <christophe.l...@linaro.org>
gcc/
* config/arm/arm-mve-builtins-shapes.cc (vidwdup): New.
* config/arm/arm-mve-builtins-shapes.h (vidwdup): New.
---
gcc/config/arm/arm-mve-builtins-shapes.cc | 88 +++++++++++++++++++++++
gcc/config/arm/arm-mve-builtins-shapes.h | 1 +
2 files changed, 89 insertions(+)
diff --git a/gcc/config/arm/arm-mve-builtins-shapes.cc
b/gcc/config/arm/arm-mve-builtins-shapes.cc
index a1d2e243128..510f15ae73a 100644
--- a/gcc/config/arm/arm-mve-builtins-shapes.cc
+++ b/gcc/config/arm/arm-mve-builtins-shapes.cc
@@ -2291,6 +2291,94 @@ struct viddup_def : public overloaded_base<0>
};
SHAPE (viddup)
+/* <T0>_t vfoo[_n]_t0(uint32_t, uint32_t, const int)
+ <T0>_t vfoo[_wb]_t0(uint32_t *, uint32_t, const int)
+
+ Shape for vector increment or decrement with wrap and duplicate operations
+ that take an integer or pointer to integer first argument, an integer second
+ argument and an immediate, and produce a vector.
+
+ Check that 'imm' is one of 1, 2, 4 or 8.
+
+ Example: vdwdupq.
+ uint8x16_t [__arm_]vdwdupq[_n]_u8(uint32_t a, uint32_t b, const int imm)
+ uint8x16_t [__arm_]vdwdupq[_wb]_u8(uint32_t *a, uint32_t b, const int imm)
+ uint8x16_t [__arm_]vdwdupq_m[_n_u8](uint8x16_t inactive, uint32_t a,
uint32_t b, const int imm, mve_pred16_t p)
+ uint8x16_t [__arm_]vdwdupq_m[_wb_u8](uint8x16_t inactive, uint32_t *a,
uint32_t b, const int imm, mve_pred16_t p)
+ uint8x16_t [__arm_]vdwdupq_x[_n]_u8(uint32_t a, uint32_t b, const int imm,
mve_pred16_t p)
+ uint8x16_t [__arm_]vdwdupq_x[_wb]_u8(uint32_t *a, uint32_t b, const int
imm, mve_pred16_t p) */
+struct vidwdup_def : public overloaded_base<0>
+{
+ bool
+ explicit_type_suffix_p (unsigned int i, enum predication_index pred,
+ enum mode_suffix_index,
+ type_suffix_info) const override
+ {
+ return ((i == 0) && (pred != PRED_m));
+ }
+
+ bool
+ skip_overload_p (enum predication_index, enum mode_suffix_index mode) const
override
+ {
+ /* For MODE_wb, share the overloaded instance with MODE_n. */
+ if (mode == MODE_wb)
+ return true;
+
+ return false;
+ }
+
+ void
+ build (function_builder &b, const function_group_info &group,
+ bool preserve_user_namespace) const override
+ {
+ b.add_overloaded_functions (group, MODE_none, preserve_user_namespace);
+ build_all (b, "v0,su32,su32,su64", group, MODE_n, preserve_user_namespace);
+ build_all (b, "v0,as,su32,su64", group, MODE_wb, preserve_user_namespace);
+ }
+
+ tree
+ resolve (function_resolver &r) const override
+ {
+ unsigned int i, nargs;
+ type_suffix_index type_suffix = NUM_TYPE_SUFFIXES;
+ if (!r.check_gp_argument (3, i, nargs))
+ return error_mark_node;
+
+ type_suffix = r.type_suffix_ids[0];
+ /* With PRED_m, ther is no type suffix, so infer it from the first
(inactive)
+ argument. */
+ if (type_suffix == NUM_TYPE_SUFFIXES)
+ type_suffix = r.infer_vector_type (0);
+
+ unsigned int last_arg = i - 2;
+ /* Check that last_arg is either scalar or pointer. */
+ if (!r.scalar_argument_p (last_arg))
+ return error_mark_node;
+
+ if (!r.scalar_argument_p (last_arg + 1))
+ return error_mark_node;
+
+ if (!r.require_integer_immediate (last_arg + 2))
+ return error_mark_node;
+
+ /* With MODE_n we expect a scalar, with MODE_wb we expect a pointer. */
+ mode_suffix_index mode_suffix;
+ if (POINTER_TYPE_P (r.get_argument_type (last_arg)))
+ mode_suffix = MODE_wb;
+ else
+ mode_suffix = MODE_n;
+
+ return r.resolve_to (mode_suffix, type_suffix);
+ }
+
+ bool
+ check (function_checker &c) const override
+ {
+ return c.require_immediate_one_of (2, 1, 2, 4, 8);
+ }
+};
+SHAPE (vidwdup)
+
/* <T0>_t vfoo[_t0](<T0>_t, <T0>_t, mve_pred16_t)
i.e. a version of the standard ternary shape in which
diff --git a/gcc/config/arm/arm-mve-builtins-shapes.h
b/gcc/config/arm/arm-mve-builtins-shapes.h
index 186287c1620..b3d08ab3866 100644
--- a/gcc/config/arm/arm-mve-builtins-shapes.h
+++ b/gcc/config/arm/arm-mve-builtins-shapes.h
@@ -83,6 +83,7 @@ namespace arm_mve
extern const function_shape *const vcvt_f32_f16;
extern const function_shape *const vcvtx;
extern const function_shape *const viddup;
+ extern const function_shape *const vidwdup;
extern const function_shape *const vpsel;
} /* end namespace arm_mve::shapes */
--
2.34.1
