mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-27 13:30:05 +00:00
5d73448bb7
Patch by Brendon Cahoon! This extends the existing LoopUnroll and LoopUnrollPass. Brendon measured no regressions in the llvm test suite with -unroll-runtime enabled. This implementation works by using the existing loop unrolling code to unroll the loop by a power-of-two (default 8). It generates an if-then-else sequence of code prior to the loop to execute the extra iterations before entering the unrolled loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146245 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.0 KiB
C++
34 lines
1.0 KiB
C++
//===- llvm/Transforms/Utils/UnrollLoop.h - Unrolling utilities -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines some loop unrolling utilities. It does not define any
|
|
// actual pass or policy, but provides a single function to perform loop
|
|
// unrolling.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TRANSFORMS_UTILS_UNROLLLOOP_H
|
|
#define LLVM_TRANSFORMS_UTILS_UNROLLLOOP_H
|
|
|
|
namespace llvm {
|
|
|
|
class Loop;
|
|
class LoopInfo;
|
|
class LPPassManager;
|
|
|
|
bool UnrollLoop(Loop *L, unsigned Count, unsigned TripCount, bool AllowRuntime,
|
|
unsigned TripMultiple, LoopInfo* LI, LPPassManager* LPM);
|
|
|
|
bool UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
|
|
LPPassManager* LPM);
|
|
|
|
}
|
|
|
|
#endif
|