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Added simd_extract_lsbs intrinsic as well.

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Equivalent to the simd_extract_msbs intrinsic, except it extracts the
least significant bit of each element instead.
This commit is contained in:
Barinzaya
2025-02-24 08:49:57 -05:00
parent 33a3aab791
commit 4afedbc051
5 changed files with 12 additions and 3 deletions
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1
base/intrinsics/intrinsics.odin
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@@ -285,6 +285,7 @@ simd_reduce_xor :: proc(a: #simd[N]T) -> T where type_is_integer(T) || t
simd_reduce_any :: proc(a: #simd[N]T) -> T where type_is_boolean(T) ---
simd_reduce_all :: proc(a: #simd[N]T) -> T where type_is_boolean(T) ---
simd_extract_lsbs :: proc(a: #simd[N]T) -> bit_set[0..<N] where type_is_integer(T) || type_is_boolean(T) ---
simd_extract_msbs :: proc(a: #simd[N]T) -> bit_set[0..<N] where type_is_integer(T) || type_is_boolean(T) ---

1
core/simd/simd.odin
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@@ -135,6 +135,7 @@ reduce_xor :: intrinsics.simd_reduce_xor
reduce_any :: intrinsics.simd_reduce_any
reduce_all :: intrinsics.simd_reduce_all
extract_lsbs :: intrinsics.simd_extract_lsbs
extract_msbs :: intrinsics.simd_extract_msbs
// swizzle :: proc(a: #simd[N]T, indices: ..int) -> #simd[len(indices)]T

1
src/check_builtin.cpp
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@@ -888,6 +888,7 @@ gb_internal bool check_builtin_simd_operation(CheckerContext *c, Operand *operan
return true;
}
case BuiltinProc_simd_extract_lsbs:
case BuiltinProc_simd_extract_msbs:
{
Operand x = {};

2
src/checker_builtin_procs.hpp
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@@ -181,6 +181,7 @@ BuiltinProc__simd_begin,
BuiltinProc_simd_reduce_any,
BuiltinProc_simd_reduce_all,
BuiltinProc_simd_extract_lsbs,
BuiltinProc_simd_extract_msbs,
BuiltinProc_simd_shuffle,
@@ -525,6 +526,7 @@ gb_global BuiltinProc builtin_procs[BuiltinProc_COUNT] = {
{STR_LIT("simd_reduce_any"), 1, false, Expr_Expr, BuiltinProcPkg_intrinsics},
{STR_LIT("simd_reduce_all"), 1, false, Expr_Expr, BuiltinProcPkg_intrinsics},
{STR_LIT("simd_extract_lsbs"), 1, false, Expr_Expr, BuiltinProcPkg_intrinsics},
{STR_LIT("simd_extract_msbs"), 1, false, Expr_Expr, BuiltinProcPkg_intrinsics},

10
src/llvm_backend_proc.cpp
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@@ -1564,6 +1564,7 @@ gb_internal lbValue lb_build_builtin_simd_proc(lbProcedure *p, Ast *expr, TypeAn
return res;
}
case BuiltinProc_simd_extract_lsbs:
case BuiltinProc_simd_extract_msbs:
{
Type *vt = arg0.type;
@@ -1572,9 +1573,12 @@ gb_internal lbValue lb_build_builtin_simd_proc(lbProcedure *p, Ast *expr, TypeAn
i64 elem_bits = 8*type_size_of(elem);
i64 num_elems = get_array_type_count(vt);
LLVMTypeRef word_type = lb_type(m, elem);
LLVMValueRef shift_value = llvm_splat_int(num_elems, word_type, elem_bits - 1);
LLVMValueRef broadcast_value = LLVMBuildAShr(p->builder, arg0.value, shift_value, "");
LLVMValueRef broadcast_value = arg0.value;
if (builtin_id == BuiltinProc_simd_extract_msbs) {
LLVMTypeRef word_type = lb_type(m, elem);
LLVMValueRef shift_value = llvm_splat_int(num_elems, word_type, elem_bits - 1);
broadcast_value = LLVMBuildAShr(p->builder, broadcast_value, shift_value, "");
}
LLVMTypeRef bitvec_type = LLVMVectorType(LLVMInt1TypeInContext(m->ctx), (unsigned)num_elems);
LLVMValueRef bitvec_value = LLVMBuildTrunc(p->builder, broadcast_value, bitvec_type, "");