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File _service:tar_scm:0155-Backport-SME-aarch64-Generalise-require_immediate_la.patch of Package gcc
From cb6d55f6bc7c490f72a43dd87543ab7a7ea582a8 Mon Sep 17 00:00:00 2001 From: Richard Sandiford <richard.sandiford@arm.com> Date: Tue, 5 Dec 2023 10:11:18 +0000 Subject: [PATCH 056/157] [Backport][SME] aarch64: Generalise require_immediate_lane_index Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=c0cf2c893d54420b0c19fee7bd41ae40017d0106 require_immediate_lane_index previously hard-coded the assumption that the group size is determined by the argument immediately before the index. However, for SME, there are cases where it should be determined by an earlier argument instead. gcc/ * config/aarch64/aarch64-sve-builtins.h: (function_checker::require_immediate_lane_index): Add an argument for the index of the indexed vector argument. * config/aarch64/aarch64-sve-builtins.cc (function_checker::require_immediate_lane_index): Likewise. * config/aarch64/aarch64-sve-builtins-shapes.cc (ternary_bfloat_lane_base::check): Update accordingly. (ternary_qq_lane_base::check): Likewise. (binary_lane_def::check): Likewise. (binary_long_lane_def::check): Likewise. (ternary_lane_def::check): Likewise. (ternary_lane_rotate_def::check): Likewise. (ternary_long_lane_def::check): Likewise. (ternary_qq_lane_rotate_def::check): Likewise. --- .../aarch64/aarch64-sve-builtins-shapes.cc | 16 ++++++++-------- gcc/config/aarch64/aarch64-sve-builtins.cc | 18 ++++++++++++------ gcc/config/aarch64/aarch64-sve-builtins.h | 3 ++- 3 files changed, 22 insertions(+), 15 deletions(-) diff --git a/gcc/config/aarch64/aarch64-sve-builtins-shapes.cc b/gcc/config/aarch64/aarch64-sve-builtins-shapes.cc index f57f92698..4fa4181b9 100644 --- a/gcc/config/aarch64/aarch64-sve-builtins-shapes.cc +++ b/gcc/config/aarch64/aarch64-sve-builtins-shapes.cc @@ -941,7 +941,7 @@ struct ternary_bfloat_lane_base bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (3, N); + return c.require_immediate_lane_index (3, 2, N); } }; @@ -956,7 +956,7 @@ struct ternary_qq_lane_base bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (3, 4); + return c.require_immediate_lane_index (3, 0); } }; @@ -1123,7 +1123,7 @@ struct binary_lane_def : public overloaded_base<0> bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (2); + return c.require_immediate_lane_index (2, 1); } }; SHAPE (binary_lane) @@ -1162,7 +1162,7 @@ struct binary_long_lane_def : public overloaded_base<0> bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (2); + return c.require_immediate_lane_index (2, 1); } }; SHAPE (binary_long_lane) @@ -2817,7 +2817,7 @@ struct ternary_lane_def : public overloaded_base<0> bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (3); + return c.require_immediate_lane_index (3, 2); } }; SHAPE (ternary_lane) @@ -2845,7 +2845,7 @@ struct ternary_lane_rotate_def : public overloaded_base<0> bool check (function_checker &c) const OVERRIDE { - return (c.require_immediate_lane_index (3, 2) + return (c.require_immediate_lane_index (3, 2, 2) && c.require_immediate_one_of (4, 0, 90, 180, 270)); } }; @@ -2868,7 +2868,7 @@ struct ternary_long_lane_def bool check (function_checker &c) const OVERRIDE { - return c.require_immediate_lane_index (3); + return c.require_immediate_lane_index (3, 2); } }; SHAPE (ternary_long_lane) @@ -2965,7 +2965,7 @@ struct ternary_qq_lane_rotate_def : public overloaded_base<0> bool check (function_checker &c) const OVERRIDE { - return (c.require_immediate_lane_index (3, 4) + return (c.require_immediate_lane_index (3, 0) && c.require_immediate_one_of (4, 0, 90, 180, 270)); } }; diff --git a/gcc/config/aarch64/aarch64-sve-builtins.cc b/gcc/config/aarch64/aarch64-sve-builtins.cc index 91af96687..7924cdf0f 100644 --- a/gcc/config/aarch64/aarch64-sve-builtins.cc +++ b/gcc/config/aarch64/aarch64-sve-builtins.cc @@ -2440,20 +2440,26 @@ function_checker::require_immediate_enum (unsigned int rel_argno, tree type) return false; } -/* Check that argument REL_ARGNO is suitable for indexing argument - REL_ARGNO - 1, in groups of GROUP_SIZE elements. REL_ARGNO counts - from the end of the predication arguments. */ +/* The intrinsic conceptually divides vector argument REL_VEC_ARGNO into + groups of GROUP_SIZE elements. Return true if argument REL_ARGNO is + a suitable constant index for selecting one of these groups. The + selection happens within a 128-bit quadword, rather than the whole vector. + + REL_ARGNO and REL_VEC_ARGNO count from the end of the predication + arguments. */ bool function_checker::require_immediate_lane_index (unsigned int rel_argno, + unsigned int rel_vec_argno, unsigned int group_size) { unsigned int argno = m_base_arg + rel_argno; if (!argument_exists_p (argno)) return true; - /* Get the type of the previous argument. tree_argument_type wants a - 1-based number, whereas ARGNO is 0-based. */ - machine_mode mode = TYPE_MODE (type_argument_type (m_fntype, argno)); + /* Get the type of the vector argument. tree_argument_type wants a + 1-based number, whereas VEC_ARGNO is 0-based. */ + unsigned int vec_argno = m_base_arg + rel_vec_argno; + machine_mode mode = TYPE_MODE (type_argument_type (m_fntype, vec_argno + 1)); gcc_assert (VECTOR_MODE_P (mode)); unsigned int nlanes = 128 / (group_size * GET_MODE_UNIT_BITSIZE (mode)); return require_immediate_range (rel_argno, 0, nlanes - 1); diff --git a/gcc/config/aarch64/aarch64-sve-builtins.h b/gcc/config/aarch64/aarch64-sve-builtins.h index 52994cde0..824c31cd7 100644 --- a/gcc/config/aarch64/aarch64-sve-builtins.h +++ b/gcc/config/aarch64/aarch64-sve-builtins.h @@ -463,7 +463,8 @@ public: bool require_immediate_either_or (unsigned int, HOST_WIDE_INT, HOST_WIDE_INT); bool require_immediate_enum (unsigned int, tree); - bool require_immediate_lane_index (unsigned int, unsigned int = 1); + bool require_immediate_lane_index (unsigned int, unsigned int, + unsigned int = 1); bool require_immediate_one_of (unsigned int, HOST_WIDE_INT, HOST_WIDE_INT, HOST_WIDE_INT, HOST_WIDE_INT); bool require_immediate_range (unsigned int, HOST_WIDE_INT, HOST_WIDE_INT); -- 2.33.0
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