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[builtins] Add missing header in D77912 and make __builtin_clzll more robust

This commit is contained in:
Fangrui Song 2020-04-17 08:29:58 -07:00
parent aff950e95d
commit 17772995d4
1 changed files with 13 additions and 1 deletions
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14
compiler-rt/lib/builtins/int_div_impl.inc
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@ -1,4 +1,16 @@
#define clz(a) (sizeof(a) == 8 ? __builtin_clzll(a) : __builtin_clz(a))
//===-- int_div_impl.inc - Integer division ---------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Helpers used by __udivsi3, __umodsi3, __udivdi3, and __umodsi3.
//
//===----------------------------------------------------------------------===//
#define clz(a) (sizeof(a) == sizeof(unsigned long long) ? __builtin_clzll(a) : __builtin_clz(a))
// Adapted from Figure 3-40 of The PowerPC Compiler Writer's Guide
static __inline fixuint_t __udivXi3(fixuint_t n, fixuint_t d) {