Make llc use getHostCPUFeatures when 'native' is specified for cpu.
This is necessary for x86 where not all Sandybridge, Ivybrige, Haswell, and Broadwell CPUs support AVX. Currently we modify the CPU name back to Nehalem for this case, but that turns off additional features for these CPUs.
llvm-svn: 233673
diff --git a/llvm/lib/MC/SubtargetFeature.cpp b/llvm/lib/MC/SubtargetFeature.cpp
index fcb43d6..3880d88 100644
--- a/llvm/lib/MC/SubtargetFeature.cpp
+++ b/llvm/lib/MC/SubtargetFeature.cpp
@@ -81,11 +81,12 @@
}
/// Adding features.
-void SubtargetFeatures::AddFeature(StringRef String) {
+void SubtargetFeatures::AddFeature(StringRef String, bool Enable) {
// Don't add empty features.
if (!String.empty())
// Convert to lowercase, prepend flag if we don't already have a flag.
- Features.push_back(hasFlag(String) ? String.lower() : "+" + String.lower());
+ Features.push_back(hasFlag(String) ? String.lower()
+ : (Enable ? "+" : "-") + String.lower());
}
/// Find KV in array using binary search.