move getNameWithPrefix and getSymbol to TargetMachine.

TargetLoweringBase is implemented in CodeGen, so before this patch we had
a dependency fom Target to CodeGen. This would show up as a link failure of
llvm-stress when building with -DBUILD_SHARED_LIBS=ON.

This fixes pr18900.

llvm-svn: 201711

1 files changed, 30 insertions, 0 deletions

diff --git a/llvm/lib/Target/TargetMachine.cpp b/llvm/lib/Target/TargetMachine.cpp
index 8c99bffc00f..f8a58ec2922 100644
--- a/llvm/lib/Target/TargetMachine.cpp
+++ b/llvm/lib/Target/TargetMachine.cpp
@@ -17,9 +17,14 @@
 #include "llvm/IR/GlobalAlias.h"
 #include "llvm/IR/GlobalValue.h"
 #include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Mangler.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/SectionKind.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
 using namespace llvm;
 
 //---------------------------------------------------------------------------
@@ -192,3 +197,28 @@ void TargetMachine::setFunctionSections(bool V) {
 void TargetMachine::setDataSections(bool V) {
   DataSections = V;
 }
+
+void TargetMachine::getNameWithPrefix(SmallVectorImpl<char> &Name,
+                                      const GlobalValue *GV, Mangler &Mang,
+                                      bool MayAlwaysUsePrivate) const {
+  if (MayAlwaysUsePrivate || !GV->hasPrivateLinkage()) {
+    // Simple case: If GV is not private, it is not important to find out if
+    // private labels are legal in this case or not.
+    Mang.getNameWithPrefix(Name, GV, false);
+    return;
+  }
+  SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, *this);
+  const TargetLoweringObjectFile &TLOF =
+      getTargetLowering()->getObjFileLowering();
+  const MCSection *TheSection = TLOF.SectionForGlobal(GV, GVKind, Mang, *this);
+  bool CannotUsePrivateLabel = TLOF.isSectionAtomizableBySymbols(*TheSection);
+  Mang.getNameWithPrefix(Name, GV, CannotUsePrivateLabel);
+}
+
+MCSymbol *TargetMachine::getSymbol(const GlobalValue *GV, Mangler &Mang) const {
+  SmallString<60> NameStr;
+  getNameWithPrefix(NameStr, GV, Mang);
+  const TargetLoweringObjectFile &TLOF =
+      getTargetLowering()->getObjFileLowering();
+  return TLOF.getContext().GetOrCreateSymbol(NameStr.str());
+}