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>
diff --git a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
index 031cf98..ba14250 100644
--- a/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
+++ b/linux-x64/clang/include/llvm-c/Transforms/Scalar.h
@@ -19,11 +19,10 @@
 #ifndef LLVM_C_TRANSFORMS_SCALAR_H
 #define LLVM_C_TRANSFORMS_SCALAR_H
 
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * @defgroup LLVMCTransformsScalar Scalar transformations
@@ -35,6 +34,9 @@
 /** See llvm::createAggressiveDCEPass function. */
 void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM);
 
+/** See llvm::createDeadCodeEliminationPass function. */
+void LLVMAddDCEPass(LLVMPassManagerRef PM);
+
 /** See llvm::createBitTrackingDCEPass function. */
 void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM);
 
@@ -65,6 +67,9 @@
 /** See llvm::createInstructionCombiningPass function. */
 void LLVMAddInstructionCombiningPass(LLVMPassManagerRef PM);
 
+/** See llvm::createInstSimplifyLegacyPass function. */
+void LLVMAddInstructionSimplifyPass(LLVMPassManagerRef PM);
+
 /** See llvm::createJumpThreadingPass function. */
 void LLVMAddJumpThreadingPass(LLVMPassManagerRef PM);
 
@@ -123,9 +128,6 @@
 /** See llvm::createTailCallEliminationPass function. */
 void LLVMAddTailCallEliminationPass(LLVMPassManagerRef PM);
 
-/** See llvm::createConstantPropagationPass function. */
-void LLVMAddConstantPropagationPass(LLVMPassManagerRef PM);
-
 /** See llvm::demotePromoteMemoryToRegisterPass function. */
 void LLVMAddDemoteMemoryToRegisterPass(LLVMPassManagerRef PM);
 
@@ -144,6 +146,9 @@
 /** See llvm::createLowerExpectIntrinsicPass function */
 void LLVMAddLowerExpectIntrinsicPass(LLVMPassManagerRef PM);
 
+/** See llvm::createLowerConstantIntrinsicsPass function */
+void LLVMAddLowerConstantIntrinsicsPass(LLVMPassManagerRef PM);
+
 /** See llvm::createTypeBasedAliasAnalysisPass function */
 void LLVMAddTypeBasedAliasAnalysisPass(LLVMPassManagerRef PM);
 
@@ -160,8 +165,6 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif /* defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif