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Support removed LLVM intrinsics by invoking its AutoUpgrade mechanism.

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This commit is contained in:
Eduard Burtescu 2016-08-03 22:37:57 +03:00
parent a0b4e67648
commit 63f0c4de67
2 changed files with 38 additions and 0 deletions
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8
src/rustllvm/PassWrapper.cpp
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@ -17,6 +17,7 @@
#include "llvm/Support/Host.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/AutoUpgrade.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
@ -361,10 +362,17 @@ extern "C" void
LLVMRustRunFunctionPassManager(LLVMPassManagerRef PM, LLVMModuleRef M) {
llvm::legacy::FunctionPassManager *P = unwrap<llvm::legacy::FunctionPassManager>(PM);
P->doInitialization();
// Upgrade all calls to old intrinsics first.
for (Module::iterator I = unwrap(M)->begin(),
E = unwrap(M)->end(); I != E;)
UpgradeCallsToIntrinsic(&*I++); // must be post-increment, as we remove
for (Module::iterator I = unwrap(M)->begin(),
E = unwrap(M)->end(); I != E; ++I)
if (!I->isDeclaration())
P->run(*I);
P->doFinalization();
}

30
src/test/run-pass/simd-upgraded.rs Normal file
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@ -0,0 +1,30 @@
// Copyright 2016 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.
// Test that removed LLVM SIMD intrinsics continue
// to work via the "AutoUpgrade" mechanism.
#![feature(cfg_target_feature, repr_simd)]
#![feature(platform_intrinsics, stmt_expr_attributes)]
#[repr(simd)]
#[derive(PartialEq, Debug)]
struct i16x8(i16, i16, i16, i16, i16, i16, i16, i16);
fn main() {
#[cfg(target_feature = "sse2")] unsafe {
extern "platform-intrinsic" {
fn x86_mm_min_epi16(x: i16x8, y: i16x8) -> i16x8;
}
assert_eq!(x86_mm_min_epi16(i16x8(0, 1, 2, 3, 4, 5, 6, 7),
i16x8(7, 6, 5, 4, 3, 2, 1, 0)),
i16x8(0, 1, 2, 3, 3, 2, 1, 0));
};
}