From 33a3aab7914fbed9abb0abfa696590ae25d03f4f Mon Sep 17 00:00:00 2001 From: Barinzaya Date: Tue, 15 Oct 2024 18:13:35 -0400 Subject: Added simd_extract_msbs intrinsic. --- src/llvm_backend_proc.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'src/llvm_backend_proc.cpp') diff --git a/src/llvm_backend_proc.cpp b/src/llvm_backend_proc.cpp index e5c04852c..eea0fe03e 100644 --- a/src/llvm_backend_proc.cpp +++ b/src/llvm_backend_proc.cpp @@ -1564,6 +1564,30 @@ gb_internal lbValue lb_build_builtin_simd_proc(lbProcedure *p, Ast *expr, TypeAn return res; } + case BuiltinProc_simd_extract_msbs: + { + Type *vt = arg0.type; + GB_ASSERT(vt->kind == Type_SimdVector); + + 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, ""); + + LLVMTypeRef bitvec_type = LLVMVectorType(LLVMInt1TypeInContext(m->ctx), (unsigned)num_elems); + LLVMValueRef bitvec_value = LLVMBuildTrunc(p->builder, broadcast_value, bitvec_type, ""); + + LLVMTypeRef mask_type = LLVMIntTypeInContext(m->ctx, (unsigned)num_elems); + LLVMValueRef mask_value = LLVMBuildBitCast(p->builder, bitvec_value, mask_type, ""); + + LLVMTypeRef result_type = lb_type(m, res.type); + res.value = LLVMBuildZExtOrBitCast(p->builder, mask_value, result_type, ""); + + return res; + } + case BuiltinProc_simd_shuffle: { -- cgit v1.2.3