Move endian constant from Host.h to SwapByteOrder.h, prune include

Works on this dependency chain:
  ArrayRef.h ->
  Hashing.h -> --CUT--
  Host.h ->
  StringMap.h / StringRef.h

ArrayRef is very popular, but Host.h is rarely needed. Move the
IsBigEndianHost constant to SwapByteOrder.h. Clients of that header are
more likely to need it.

llvm-svn: 375316

3 files changed, 5 insertions, 2 deletions

diff --git a/llvm/lib/ExecutionEngine/Orc/JITTargetMachineBuilder.cpp b/llvm/lib/ExecutionEngine/Orc/JITTargetMachineBuilder.cpp
index 359ef99472a..1d3e6db913e 100644
--- a/llvm/lib/ExecutionEngine/Orc/JITTargetMachineBuilder.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/JITTargetMachineBuilder.cpp
@@ -8,6 +8,7 @@
 
 #include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"
 
+#include "llvm/Support/Host.h"
 #include "llvm/Support/TargetRegistry.h"
 
 namespace llvm {
diff --git a/llvm/lib/Support/Windows/WindowsSupport.h b/llvm/lib/Support/Windows/WindowsSupport.h
index fed9b2f462e..2e2e97430b7 100644
--- a/llvm/lib/Support/Windows/WindowsSupport.h
+++ b/llvm/lib/Support/Windows/WindowsSupport.h
@@ -38,6 +38,7 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Config/config.h" // Get build system configuration settings
+#include "llvm/Support/Allocator.h"
 #include "llvm/Support/Chrono.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/VersionTuple.h"
diff --git a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
index a241362a271..e287f662511 100644
--- a/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
+++ b/llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.cpp
@@ -12,13 +12,14 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "X86DisassemblerDecoder.h"
+#include "llvm/ADT/StringRef.h"
+
 #include <cstdarg> /* for va_*()       */
 #include <cstdio>  /* for vsnprintf()  */
 #include <cstdlib> /* for exit()       */
 #include <cstring> /* for memset()     */
 
-#include "X86DisassemblerDecoder.h"
-
 using namespace llvm::X86Disassembler;
 
 /// Specifies whether a ModR/M byte is needed and (if so) which