RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-01-04 02:40:42 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Optimize mask generation for one of the DAG combiner shufflevector cases.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187961 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2013-08-08 07:38:55 +00:00
parent 05a4d2642b
commit 01d22aaa78
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
View File

@ -9358,10 +9358,10 @@ SDValue DAGCombiner::visitVECTOR_SHUFFLE(SDNode *N) {
for (unsigned i = 0; i != NumElts; ++i) {
int Idx = SVN->getMaskElt(i);
if (Idx >= 0) {
if (Idx < (int)NumElts)
Idx += NumElts;
else
if (Idx >= (int)NumElts)
Idx -= NumElts;
else
Idx = -1; // remove reference to lhs
}
NewMask.push_back(Idx);
}