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@kamleshbhalui reported that when the Standard Extension M (Multiplication and Division) is disabled for RISC-V, `__udivdi3` will call __udivmodti4 which will in turn calls `__udivdi3`. This patch moves __udivsi3 (shift and subtract) to int_div_impl.inc `__udivXi3`, optimize a bit, add a `__umodXi3`, and use `__udivXi3` and `__umodXi3` to define `__udivsi3` `__umodsi3` `__udivdi3` `__umoddi3`. Reviewed By: kamleshbhalui Differential Revision: https://reviews.llvm.org/D77912
24 lines
724 B
C
24 lines
724 B
C
//===-- udivdi3.c - Implement __udivdi3 -----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements __udivdi3 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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typedef du_int fixuint_t;
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typedef di_int fixint_t;
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#include "int_div_impl.inc"
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// Returns: a / b
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COMPILER_RT_ABI du_int __udivdi3(du_int a, du_int b) {
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return __udivXi3(a, b);
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}
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