[ORC] Rename MachOCompactUnwindSectionName to MachOUnwindInfoSectionName.

a1ff2d1 should have disambiguated MachOCompactUnwindInfoSectionName to
MachOUnwindInfoSectionName, given how it's used in MachOPlatform and its
value.

A MachOCompactUnwindSectionName variable with an appropriate value will be
added in an upcoming patch to re-enable compact-unwind support in JITLink.

Author: lhames

llvm/include/llvm/ExecutionEngine/Orc/Shared/MachOObjectFormat.h

@@ -25,7 +25,6 @@ namespace orc {
 extern StringRef MachODataCommonSectionName;
 extern StringRef MachODataDataSectionName;
 extern StringRef MachOEHFrameSectionName;
-extern StringRef MachOCompactUnwindSectionName;
 extern StringRef MachOCStringSectionName;
 extern StringRef MachOModInitFuncSectionName;
 extern StringRef MachOObjCCatListSectionName;
@@ -53,6 +52,7 @@ extern StringRef MachOTextTextSectionName;
 extern StringRef MachOThreadBSSSectionName;
 extern StringRef MachOThreadDataSectionName;
 extern StringRef MachOThreadVarsSectionName;
+extern StringRef MachOUnwindInfoSectionName;
 
 extern StringRef MachOInitSectionNames[22];
 

llvm/lib/ExecutionEngine/Orc/MachOPlatform.cpp

@@ -1278,7 +1278,7 @@ MachOPlatform::MachOPlatformPlugin::findUnwindSectionInfo(
   if (Section *EHFrameSec = G.findSectionByName(MachOEHFrameSectionName))
     ScanUnwindInfoSection(*EHFrameSec, US.DwarfSection);
 
-  if (Section *CUInfoSec = G.findSectionByName(MachOCompactUnwindSectionName))
+  if (Section *CUInfoSec = G.findSectionByName(MachOUnwindInfoSectionName))
     ScanUnwindInfoSection(*CUInfoSec, US.CompactUnwindSection);
 
   // If we didn't find any pointed-to code-blocks then there's no need to

llvm/lib/ExecutionEngine/Orc/Shared/MachOObjectFormat.cpp

@@ -18,7 +18,6 @@ namespace orc {
 StringRef MachODataCommonSectionName = "__DATA,__common";
 StringRef MachODataDataSectionName = "__DATA,__data";
 StringRef MachOEHFrameSectionName = "__TEXT,__eh_frame";
-StringRef MachOCompactUnwindSectionName = "__TEXT,__unwind_info";
 StringRef MachOCStringSectionName = "__TEXT,__cstring";
 StringRef MachOModInitFuncSectionName = "__DATA,__mod_init_func";
 StringRef MachOObjCCatListSectionName = "__DATA,__objc_catlist";
@@ -46,6 +45,7 @@ StringRef MachOTextTextSectionName = "__TEXT,__text";
 StringRef MachOThreadBSSSectionName = "__DATA,__thread_bss";
 StringRef MachOThreadDataSectionName = "__DATA,__thread_data";
 StringRef MachOThreadVarsSectionName = "__DATA,__thread_vars";
+StringRef MachOUnwindInfoSectionName = "__TEXT,__unwind_info";
 
 StringRef MachOInitSectionNames[22] = {
     MachOModInitFuncSectionName,         MachOObjCCatListSectionName,