Crate compiler_builtins

Modules

float
int
mem
probestack	This module defines the __rust_probestack intrinsic which is used in the implementation of "stack probes" on certain platforms.
x86_64

Macros

impl_asymmetric	Creates unsigned and signed division functions optimized for dividing integers with the same bitwidth as the largest operand in an asymmetrically sized division. For example, x86-64 has an assembly instruction that can divide a 128 bit integer by a 64 bit integer if the quotient fits in 64 bits. The 128 bit version of this algorithm would use that fast hardware division to construct a full 128 bit by 128 bit division.
impl_binary_long	Creates unsigned and signed division functions that use binary long division, designed for computer architectures without division instructions. These functions have good performance for microarchitectures with large branch miss penalties and architectures without the ability to predicate instructions. For architectures with predicated instructions, one of the algorithms described in the documentation of these functions probably has higher performance, and a custom assembly routine should be used instead.
impl_delegate	Creates unsigned and signed division functions that use a combination of hardware division and binary long division to divide integers larger than what hardware division by itself can do. This function is intended for microarchitectures that have division hardware, but not fast enough multiplication hardware for impl_trifecta to be faster.
impl_normalization_shift	Creates a function used by some division algorithms to compute the "normalization shift".
impl_trifecta	Creates unsigned and signed division functions optimized for division of integers with bitwidths larger than the largest hardware integer division supported. These functions use large radix division algorithms that require both fast division and very fast widening multiplication on the target microarchitecture. Otherwise, impl_delegate should be used instead.