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+Patch-Source: https://github.com/rust-lang/llvm-project/commit/0a157fd7a5f61973ffddf96b3d445a718193eb1a
+From 0a157fd7a5f61973ffddf96b3d445a718193eb1a Mon Sep 17 00:00:00 2001
+From: Cameron Hart <cameron.hart@gmail.com>
+Date: Sun, 10 Jul 2016 23:55:53 +1000
+Subject: [PATCH] [rust] Add accessors for MCSubtargetInfo CPU and Feature
+ tables
+
+This is needed for `-C target-cpu=help` and `-C target-feature=help` in rustc
+---
+ llvm/include/llvm/MC/MCSubtargetInfo.h | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/llvm/include/llvm/MC/MCSubtargetInfo.h b/llvm/include/llvm/MC/MCSubtargetInfo.h
+index e1f0a86141e36..1e529bf4fb31e 100644
+--- a/llvm/include/llvm/MC/MCSubtargetInfo.h
++++ b/llvm/include/llvm/MC/MCSubtargetInfo.h
+@@ -230,6 +230,14 @@ class MCSubtargetInfo {
+ return Found != ProcDesc.end() && StringRef(Found->Key) == CPU;
+ }
+
++ ArrayRef<SubtargetSubTypeKV> getCPUTable() const {
++ return ProcDesc;
++ }
++
++ ArrayRef<SubtargetFeatureKV> getFeatureTable() const {
++ return ProcFeatures;
++ }
++
+ virtual unsigned getHwMode() const { return 0; }
+
+ /// Return the cache size in bytes for the given level of cache.
+
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+
