[AMDGPU] Remove unused includes (NFC) (#141376)

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp

@@ -26,7 +26,6 @@
 #include "llvm/IR/InstVisitor.h"
 #include "llvm/IR/IntrinsicsAMDGPU.h"
 #include "llvm/IR/PatternMatch.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/KnownBits.h"
 #include "llvm/Support/KnownFPClass.h"

llvm/lib/Target/AMDGPU/AMDGPUExportClustering.cpp

@@ -12,7 +12,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "AMDGPUExportClustering.h"
-#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
 #include "SIInstrInfo.h"
 #include "llvm/CodeGen/ScheduleDAGInstrs.h"
 

llvm/lib/Target/AMDGPU/AMDGPULibCalls.cpp

@@ -13,7 +13,6 @@
 
 #include "AMDGPU.h"
 #include "AMDGPULibFunc.h"
-#include "GCNSubtarget.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"

llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp

@@ -243,7 +243,6 @@
 #include "llvm/IR/PatternMatch.h"
 #include "llvm/IR/ReplaceConstant.h"
 #include "llvm/IR/ValueHandle.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/AMDGPUAddrSpace.h"
 #include "llvm/Support/Alignment.h"

llvm/lib/Target/AMDGPU/AMDGPULowerModuleLDSPass.cpp

@@ -196,7 +196,6 @@
 #include "llvm/IR/IntrinsicsAMDGPU.h"
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/IR/ReplaceConstant.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"

llvm/lib/Target/AMDGPU/AMDGPUReserveWWMRegs.cpp

@@ -20,7 +20,6 @@
 #include "SIMachineFunctionInfo.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/VirtRegMap.h"
-#include "llvm/InitializePasses.h"
 
 using namespace llvm;
 

llvm/lib/Target/AMDGPU/AMDGPUSwLowerLDS.cpp

@@ -104,7 +104,6 @@
 #include "llvm/IR/IntrinsicsAMDGPU.h"
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/IR/ReplaceConstant.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Transforms/Instrumentation/AddressSanitizerCommon.h"

llvm/lib/Target/AMDGPU/MCTargetDesc/R600MCCodeEmitter.cpp

@@ -13,7 +13,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "MCTargetDesc/AMDGPUMCExpr.h"
 #include "MCTargetDesc/R600MCTargetDesc.h"
 #include "R600Defines.h"
 #include "llvm/MC/MCCodeEmitter.h"

llvm/lib/Target/AMDGPU/R600ISelDAGToDAG.cpp

@@ -16,7 +16,6 @@
 #include "MCTargetDesc/R600MCTargetDesc.h"
 #include "R600.h"
 #include "R600Subtarget.h"
-#include "llvm/Analysis/ValueTracking.h"
 
 using namespace llvm;