diff options
Diffstat (limited to 'llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp index 2eab5748980..4a4431643b0 100644 --- a/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp +++ b/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp @@ -194,6 +194,11 @@ bool CombinerHelper::matchCombineExtendingLoads(MachineInstr &MI, if (LoadValueTy.getSizeInBits() < 8) return false; + // For non power-of-2 types, they will very likely be legalized into multiple + // loads. Don't bother trying to match them into extending loads. + if (!isPowerOf2_32(LoadValueTy.getSizeInBits())) + return false; + // Find the preferred type aside from the any-extends (unless it's the only // one) and non-extending ops. We'll emit an extending load to that type and // and emit a variant of (extend (trunc X)) for the others according to the |
