diff options
Diffstat (limited to '0248-Backport-SME-RISC-V-autovec-Verify-that-GET_MODE_NUN.patch')
| -rw-r--r-- | 0248-Backport-SME-RISC-V-autovec-Verify-that-GET_MODE_NUN.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/0248-Backport-SME-RISC-V-autovec-Verify-that-GET_MODE_NUN.patch b/0248-Backport-SME-RISC-V-autovec-Verify-that-GET_MODE_NUN.patch new file mode 100644 index 0000000..df79d84 --- /dev/null +++ b/0248-Backport-SME-RISC-V-autovec-Verify-that-GET_MODE_NUN.patch @@ -0,0 +1,53 @@ +From a3b4a0ac472415a52ce836e8997f7a69a06fad33 Mon Sep 17 00:00:00 2001 +From: Michael Collison <collison@rivosinc.com> +Date: Sat, 6 May 2023 12:37:50 -0600 +Subject: [PATCH 149/157] [Backport][SME] RISC-V: autovec: Verify that + GET_MODE_NUNITS is a multiple of 2. + +Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=730909fa858bd691095bc23655077aa13b7941a9 + +While working on autovectorizing for the RISCV port I encountered an issue +where can_duplicate_and_interleave_p assumes that GET_MODE_NUNITS is a +evenly divisible by two. The RISC-V target has vector modes (e.g. VNx1DImode), +where GET_MODE_NUNITS is equal to one. + +Tested on RISCV and x86_64-linux-gnu. Okay? + +gcc/ + * tree-vect-slp.cc (can_duplicate_and_interleave_p): + Check that GET_MODE_NUNITS is a multiple of 2. +--- + gcc/tree-vect-slp.cc | 7 +++++-- + 1 file changed, 5 insertions(+), 2 deletions(-) + +diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc +index 6cbf8085f..d02f0ce37 100644 +--- a/gcc/tree-vect-slp.cc ++++ b/gcc/tree-vect-slp.cc +@@ -401,10 +401,13 @@ can_duplicate_and_interleave_p (vec_info *vinfo, unsigned int count, + (GET_MODE_BITSIZE (int_mode), 1); + tree vector_type + = get_vectype_for_scalar_type (vinfo, int_type, count); ++ poly_int64 half_nelts; + if (vector_type + && VECTOR_MODE_P (TYPE_MODE (vector_type)) + && known_eq (GET_MODE_SIZE (TYPE_MODE (vector_type)), +- GET_MODE_SIZE (base_vector_mode))) ++ GET_MODE_SIZE (base_vector_mode)) ++ && multiple_p (GET_MODE_NUNITS (TYPE_MODE (vector_type)), ++ 2, &half_nelts)) + { + /* Try fusing consecutive sequences of COUNT / NVECTORS elements + together into elements of type INT_TYPE and using the result +@@ -412,7 +415,7 @@ can_duplicate_and_interleave_p (vec_info *vinfo, unsigned int count, + poly_uint64 nelts = GET_MODE_NUNITS (TYPE_MODE (vector_type)); + vec_perm_builder sel1 (nelts, 2, 3); + vec_perm_builder sel2 (nelts, 2, 3); +- poly_int64 half_nelts = exact_div (nelts, 2); ++ + for (unsigned int i = 0; i < 3; ++i) + { + sel1.quick_push (i); +-- +2.33.0 + |