diff options
Diffstat (limited to 'src/llvm_backend.cpp')
| -rw-r--r-- | src/llvm_backend.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/llvm_backend.cpp b/src/llvm_backend.cpp index c6f1c3693..c52c9269e 100644 --- a/src/llvm_backend.cpp +++ b/src/llvm_backend.cpp @@ -9113,6 +9113,8 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv, case BuiltinProc_count_ones: return lb_emit_count_ones(p, lb_build_expr(p, ce->args[0]), tv.type); + case BuiltinProc_count_zeros: + return lb_emit_count_zeros(p, lb_build_expr(p, ce->args[0]), tv.type); case BuiltinProc_reverse_bits: return lb_emit_reverse_bits(p, lb_build_expr(p, ce->args[0]), tv.type); @@ -9971,6 +9973,14 @@ lbValue lb_emit_count_ones(lbProcedure *p, lbValue x, Type *type) { return res; } +lbValue lb_emit_count_zeros(lbProcedure *p, lbValue x, Type *type) { + i64 sz = 8*type_size_of(type); + lbValue size = lb_const_int(p->module, type, cast(u64)sz); + lbValue count = lb_emit_count_ones(p, x, type); + return lb_emit_arith(p, Token_Sub, size, count, type); +} + + lbValue lb_emit_count_trailing_zeros(lbProcedure *p, lbValue x, Type *type) { x = lb_emit_conv(p, x, type); |