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Adding support for the llvm prefetch intrinsic

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Related to #37251
This commit is contained in:
Falco Hirschenberger 2017-04-21 09:00:34 +02:00
parent e1fe1a8933
commit f83901bb89
5 changed files with 143 additions and 1 deletions
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src/test/codegen/prefetch.rs Normal file
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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// compile-flags: -C no-prepopulate-passes
#![crate_type = "lib"]
#![feature(core_intrinsics)]
use std::intrinsics::{prefetch_read_data, prefetch_write_data,
prefetch_read_instruction, prefetch_write_instruction};
#[no_mangle]
pub fn check_prefetch_read_data(data: &[i8]) {
unsafe {
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 0, i32 1)
prefetch_read_data(data.as_ptr(), 0);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 1, i32 1)
prefetch_read_data(data.as_ptr(), 1);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 2, i32 1)
prefetch_read_data(data.as_ptr(), 2);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 3, i32 1)
prefetch_read_data(data.as_ptr(), 3);
}
}
#[no_mangle]
pub fn check_prefetch_write_data(data: &[i8]) {
unsafe {
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 0, i32 1)
prefetch_write_data(data.as_ptr(), 0);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 1, i32 1)
prefetch_write_data(data.as_ptr(), 1);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 2, i32 1)
prefetch_write_data(data.as_ptr(), 2);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 3, i32 1)
prefetch_write_data(data.as_ptr(), 3);
}
}
#[no_mangle]
pub fn check_prefetch_read_instruction(data: &[i8]) {
unsafe {
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 0, i32 0)
prefetch_read_instruction(data.as_ptr(), 0);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 1, i32 0)
prefetch_read_instruction(data.as_ptr(), 1);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 2, i32 0)
prefetch_read_instruction(data.as_ptr(), 2);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 0, i32 3, i32 0)
prefetch_read_instruction(data.as_ptr(), 3);
}
}
#[no_mangle]
pub fn check_prefetch_write_instruction(data: &[i8]) {
unsafe {
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 0, i32 0)
prefetch_write_instruction(data.as_ptr(), 0);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 1, i32 0)
prefetch_write_instruction(data.as_ptr(), 1);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 2, i32 0)
prefetch_write_instruction(data.as_ptr(), 2);
// CHECK: call void @llvm.prefetch(i8* %{{.*}}, i32 1, i32 3, i32 0)
prefetch_write_instruction(data.as_ptr(), 3);
}
}