diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index de99c3f..f1272d4 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -1545,19 +1545,6 @@ bool GVN::processNonLocalLoad(LoadInst *LI, assert(TmpBB); LoadBB = TmpBB; - // If we have a repl set with LI itself in it, this means we have a loop where - // at least one of the values is LI. Since this means that we won't be able - // to eliminate LI even if we insert uses in the other predecessors, we will - // end up increasing code size. Reject this by scanning for LI. - for (unsigned i = 0, e = ValuesPerBlock.size(); i != e; ++i) { - if (ValuesPerBlock[i].isSimpleValue() && - ValuesPerBlock[i].getSimpleValue() == LI) { - // Skip cases where LI is the only definition, even for EnableFullLoadPRE. - if (!EnableFullLoadPRE || e == 1) - return false; - } - } - // FIXME: It is extremely unclear what this loop is doing, other than // artificially restricting loadpre. if (isSinglePred) { |