RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-03-04 02:18:46 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[LoopUnroll] Check partial unrolling is enabled before initialization. NFC.

Browse Source 
Differential Revision: https://reviews.llvm.org/D23891

llvm-svn: 285330
This commit is contained in:
Haicheng Wu 2016-10-27 18:40:02 +00:00
parent 68d206a9d2
commit 78fd509204
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
lib/Transforms/Scalar/LoopUnrollPass.cpp
View File

@ -803,8 +803,6 @@ static bool computeUnrollCount(
// 4rd priority is partial unrolling. // 4rd priority is partial unrolling.
// Try partial unroll only when TripCount could be staticaly calculated. // Try partial unroll only when TripCount could be staticaly calculated.
if (TripCount) { if (TripCount) {
if (UP.Count == 0)
UP.Count = TripCount;
UP.Partial |= ExplicitUnroll; UP.Partial |= ExplicitUnroll;
if (!UP.Partial) { if (!UP.Partial) {
DEBUG(dbgs() << " will not try to unroll partially because " DEBUG(dbgs() << " will not try to unroll partially because "
@ -812,6 +810,8 @@ static bool computeUnrollCount(
UP.Count = 0; UP.Count = 0;
return false; return false;
} }
if (UP.Count == 0)
UP.Count = TripCount;
if (UP.PartialThreshold != NoThreshold) { if (UP.PartialThreshold != NoThreshold) {
// Reduce unroll count to be modulo of TripCount for partial unrolling. // Reduce unroll count to be modulo of TripCount for partial unrolling.
UnrolledSize = (uint64_t)(LoopSize - BEInsns) * UP.Count + BEInsns; UnrolledSize = (uint64_t)(LoopSize - BEInsns) * UP.Count + BEInsns;