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-rw-r--r--clang/lib/CodeGen/BackendUtil.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 32eb776a6d2..1dbeec1c178 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -1050,7 +1050,14 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
CodeGenOpts.DebugInfoForProfiling);
}
- PassBuilder PB(TM.get(), PipelineTuningOptions(), PGOOpt);
+ PipelineTuningOptions PTO;
+ // For historical reasons, loop interleaving is set to mirror setting for loop
+ // unrolling.
+ PTO.LoopInterleaving = CodeGenOpts.UnrollLoops;
+ PTO.LoopVectorization = CodeGenOpts.VectorizeLoop;
+ PTO.SLPVectorization = CodeGenOpts.VectorizeSLP;
+
+ PassBuilder PB(TM.get(), PTO, PGOOpt);
// Attempt to load pass plugins and register their callbacks with PB.
for (auto &PluginFN : CodeGenOpts.PassPlugins) {
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