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| author | Dimitry Andric <dim@FreeBSD.org> | 2020-06-27 18:34:17 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2020-06-27 18:34:17 +0000 |
| commit | dbb6490749e2bb2a514a8a305b8fadc3495183e6 (patch) | |
| tree | dd42cfd6d9813d5640a01083bdc0eedcb3f862c2 /compiler-rt/lib/builtins/riscv/int_mul_impl.inc | |
| parent | 483b61a50e7423b063fc26985325f594560b3f7e (diff) | |
vendor/llvm-project/llvmorg-10.0.1-rc2-0-g77d76b71d7dvendor/llvm-project/llvmorg-10.0.1-0-gef32c611aa2vendor/llvm-project/release-10.x
Notes
Diffstat (limited to 'compiler-rt/lib/builtins/riscv/int_mul_impl.inc')
| -rw-r--r-- | compiler-rt/lib/builtins/riscv/int_mul_impl.inc | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/compiler-rt/lib/builtins/riscv/int_mul_impl.inc b/compiler-rt/lib/builtins/riscv/int_mul_impl.inc new file mode 100644 index 0000000000000..50951d5f4195f --- /dev/null +++ b/compiler-rt/lib/builtins/riscv/int_mul_impl.inc @@ -0,0 +1,31 @@ +//===-- int_mul_impl.inc - Integer multiplication -------------------------===// +// +// 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 __mulsi3, __muldi3. +// +//===----------------------------------------------------------------------===// + +#if !defined(__riscv_mul) + .text + .align 2 + + .globl __mulxi3 + .type __mulxi3, @function +__mulxi3: + mv a2, a0 + mv a0, zero +.L1: + andi a3, a1, 1 + beqz a3, .L2 + add a0, a0, a2 +.L2: + srli a1, a1, 1 + slli a2, a2, 1 + bnez a1, .L1 + ret +#endif |