Vendor import of llvm trunk r241361:vendor/llvm/llvm-trunk-r241361

https://llvm.org/svn/llvm-project/llvm/trunk@241361

1 files changed, 35 insertions, 19 deletions

diff --git a/lib/IR/Mangler.cpp b/lib/IR/Mangler.cpp
index a0e1b25056c9..016cb9eb6892 100644
--- a/lib/IR/Mangler.cpp
+++ b/lib/IR/Mangler.cpp
@@ -17,12 +17,21 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
+#include "llvm/IR/Module.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
-static void getNameWithPrefixx(raw_ostream &OS, const Twine &GVName,
-                              Mangler::ManglerPrefixTy PrefixTy,
-                              const DataLayout &DL, char Prefix) {
+namespace {
+enum ManglerPrefixTy {
+  Default,      ///< Emit default string before each symbol.
+  Private,      ///< Emit "private" prefix before each symbol.
+  LinkerPrivate ///< Emit "linker private" prefix before each symbol.
+};
+}
+
+static void getNameWithPrefixImpl(raw_ostream &OS, const Twine &GVName,
+                                  ManglerPrefixTy PrefixTy,
+                                  const DataLayout &DL, char Prefix) {
   SmallString<256> TmpData;
   StringRef Name = GVName.toStringRef(TmpData);
   assert(!Name.empty() && "getNameWithPrefix requires non-empty name");
@@ -34,9 +43,9 @@ static void getNameWithPrefixx(raw_ostream &OS, const Twine &GVName,
     return;
   }
 
-  if (PrefixTy == Mangler::Private)
+  if (PrefixTy == Private)
     OS << DL.getPrivateGlobalPrefix();
-  else if (PrefixTy == Mangler::LinkerPrivate)
+  else if (PrefixTy == LinkerPrivate)
     OS << DL.getLinkerPrivateGlobalPrefix();
 
   if (Prefix != '\0')
@@ -46,17 +55,23 @@ static void getNameWithPrefixx(raw_ostream &OS, const Twine &GVName,
   OS << Name;
 }
 
+static void getNameWithPrefixImpl(raw_ostream &OS, const Twine &GVName,
+                                  const DataLayout &DL,
+                                  ManglerPrefixTy PrefixTy) {
+  char Prefix = DL.getGlobalPrefix();
+  return getNameWithPrefixImpl(OS, GVName, PrefixTy, DL, Prefix);
+}
+
 void Mangler::getNameWithPrefix(raw_ostream &OS, const Twine &GVName,
-                                ManglerPrefixTy PrefixTy) const {
-  char Prefix = DL->getGlobalPrefix();
-  return getNameWithPrefixx(OS, GVName, PrefixTy, *DL, Prefix);
+                                const DataLayout &DL) {
+  return getNameWithPrefixImpl(OS, GVName, DL, Default);
 }
 
 void Mangler::getNameWithPrefix(SmallVectorImpl<char> &OutName,
-                                const Twine &GVName,
-                                ManglerPrefixTy PrefixTy) const {
+                                const Twine &GVName, const DataLayout &DL) {
   raw_svector_ostream OS(OutName);
-  return getNameWithPrefix(OS, GVName, PrefixTy);
+  char Prefix = DL.getGlobalPrefix();
+  return getNameWithPrefixImpl(OS, GVName, Default, DL, Prefix);
 }
 
 static bool hasByteCountSuffix(CallingConv::ID CC) {
@@ -92,14 +107,15 @@ static void addByteCountSuffix(raw_ostream &OS, const Function *F,
 
 void Mangler::getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
                                 bool CannotUsePrivateLabel) const {
-  ManglerPrefixTy PrefixTy = Mangler::Default;
+  ManglerPrefixTy PrefixTy = Default;
   if (GV->hasPrivateLinkage()) {
     if (CannotUsePrivateLabel)
-      PrefixTy = Mangler::LinkerPrivate;
+      PrefixTy = LinkerPrivate;
     else
-      PrefixTy = Mangler::Private;
+      PrefixTy = Private;
   }
 
+  const DataLayout &DL = GV->getParent()->getDataLayout();
   if (!GV->hasName()) {
     // Get the ID for the global, assigning a new one if we haven't got one
     // already.
@@ -108,12 +124,12 @@ void Mangler::getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
       ID = NextAnonGlobalID++;
 
     // Must mangle the global into a unique ID.
-    getNameWithPrefix(OS, "__unnamed_" + Twine(ID), PrefixTy);
+    getNameWithPrefixImpl(OS, "__unnamed_" + Twine(ID), DL, PrefixTy);
     return;
   }
 
   StringRef Name = GV->getName();
-  char Prefix = DL->getGlobalPrefix();
+  char Prefix = DL.getGlobalPrefix();
 
   // Mangle functions with Microsoft calling conventions specially.  Only do
   // this mangling for x86_64 vectorcall and 32-bit x86.
@@ -122,7 +138,7 @@ void Mangler::getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
     MSFunc = nullptr; // Don't mangle when \01 is present.
   CallingConv::ID CC =
       MSFunc ? MSFunc->getCallingConv() : (unsigned)CallingConv::C;
-  if (!DL->hasMicrosoftFastStdCallMangling() &&
+  if (!DL.hasMicrosoftFastStdCallMangling() &&
       CC != CallingConv::X86_VectorCall)
     MSFunc = nullptr;
   if (MSFunc) {
@@ -132,7 +148,7 @@ void Mangler::getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
       Prefix = '\0'; // vectorcall functions have no prefix.
   }
 
-  getNameWithPrefixx(OS, Name, PrefixTy, *DL, Prefix);
+  getNameWithPrefixImpl(OS, Name, PrefixTy, DL, Prefix);
 
   if (!MSFunc)
     return;
@@ -147,7 +163,7 @@ void Mangler::getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
       // "Pure" variadic functions do not receive @0 suffix.
       (!FT->isVarArg() || FT->getNumParams() == 0 ||
        (FT->getNumParams() == 1 && MSFunc->hasStructRetAttr())))
-    addByteCountSuffix(OS, MSFunc, *DL);
+    addByteCountSuffix(OS, MSFunc, DL);
 }
 
 void Mangler::getNameWithPrefix(SmallVectorImpl<char> &OutName,