[lli] Make lli support -mcpu=native for CPU autodetection

llc, opt, and clang can all autodetect the CPU and supported features. lli cannot as far as I could tell.

This patch uses the getCPUStr() and introduces a new getCPUFeatureList() and uses those in lli in place of MCPU and MAttrs.

Ideally, we would merge getCPUFeatureList and getCPUFeatureStr, but opt and llc need a string and lli wanted a list. Maybe we should just return the SubtargetFeature object and let the caller decide what it needs?

Differential Revision: https://reviews.llvm.org/D41833

llvm-svn: 322100

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/tools/lli/lli.cpp b/llvm/tools/lli/lli.cpp
index a33c51d7787..ede5ea751d6 100644
--- a/llvm/tools/lli/lli.cpp
+++ b/llvm/tools/lli/lli.cpp
@@ -378,8 +378,8 @@ int main(int argc, char **argv, char * const *envp) {
   std::string ErrorMsg;
   EngineBuilder builder(std::move(Owner));
   builder.setMArch(MArch);
-  builder.setMCPU(MCPU);
-  builder.setMAttrs(MAttrs);
+  builder.setMCPU(getCPUStr());
+  builder.setMAttrs(getFeatureList());
   if (RelocModel.getNumOccurrences())
     builder.setRelocationModel(RelocModel);
   if (CMModel.getNumOccurrences())