commit f4ef2d0d9dbf6f696386b786eb60884a933685b0
author Olivier Deprez <olivier.deprez@arm.com> Tue Apr 20 13:36:24 2021 +0200
committer Daniel Boulby <daniel.boulby@arm.com> Tue Oct 12 13:31:56 2021 +0100
tree e9081b61fa2bfde16861ab58927c14bb2f1bf505
parent 07c3246c6f9cf9e7faf344ed396d9c90fc2ca32e

Update prebuilt Clang to r416183b from Android.

https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef

clang 12.0.5 (based on r416183b) from build 7284624.

Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>

linux-x64/clang/include/llvm/Analysis/LegacyDivergenceAnalysis.h

diff --git a/linux-x64/clang/include/llvm/Analysis/LegacyDivergenceAnalysis.h b/linux-x64/clang/include/llvm/Analysis/LegacyDivergenceAnalysis.h
index 0a338b8..15400f5 100644
--- a/linux-x64/clang/include/llvm/Analysis/LegacyDivergenceAnalysis.h
+++ b/linux-x64/clang/include/llvm/Analysis/LegacyDivergenceAnalysis.h
@@ -16,20 +16,23 @@
 #define LLVM_ANALYSIS_LEGACY_DIVERGENCE_ANALYSIS_H
 
 #include "llvm/ADT/DenseSet.h"
-#include "llvm/IR/Function.h"
 #include "llvm/Pass.h"
-#include "llvm/Analysis/DivergenceAnalysis.h"
+#include <memory>
 
 namespace llvm {
-class Value;
+class Function;
 class GPUDivergenceAnalysis;
+class Module;
+class raw_ostream;
+class TargetTransformInfo;
+class Use;
+class Value;
+
 class LegacyDivergenceAnalysis : public FunctionPass {
 public:
   static char ID;
 
-  LegacyDivergenceAnalysis() : FunctionPass(ID) {
-    initializeLegacyDivergenceAnalysisPass(*PassRegistry::getPassRegistry());
-  }
+  LegacyDivergenceAnalysis();
 
   void getAnalysisUsage(AnalysisUsage &AU) const override;
 
@@ -39,29 +42,34 @@
   void print(raw_ostream &OS, const Module *) const override;
 
   // Returns true if V is divergent at its definition.
-  //
-  // Even if this function returns false, V may still be divergent when used
-  // in a different basic block.
   bool isDivergent(const Value *V) const;
 
+  // Returns true if U is divergent. Uses of a uniform value can be divergent.
+  bool isDivergentUse(const Use *U) const;
+
   // Returns true if V is uniform/non-divergent.
-  //
-  // Even if this function returns true, V may still be divergent when used
-  // in a different basic block.
   bool isUniform(const Value *V) const { return !isDivergent(V); }
 
+  // Returns true if U is uniform/non-divergent. Uses of a uniform value can be
+  // divergent.
+  bool isUniformUse(const Use *U) const { return !isDivergentUse(U); }
+
   // Keep the analysis results uptodate by removing an erased value.
   void removeValue(const Value *V) { DivergentValues.erase(V); }
 
 private:
   // Whether analysis should be performed by GPUDivergenceAnalysis.
-  bool shouldUseGPUDivergenceAnalysis(const Function &F) const;
+  bool shouldUseGPUDivergenceAnalysis(const Function &F,
+                                      const TargetTransformInfo &TTI) const;
 
   // (optional) handle to new DivergenceAnalysis
   std::unique_ptr<GPUDivergenceAnalysis> gpuDA;
 
   // Stores all divergent values.
   DenseSet<const Value *> DivergentValues;
+
+  // Stores divergent uses of possibly uniform values.
+  DenseSet<const Use *> DivergentUses;
 };
 } // End llvm namespace