Pass in a std::string when getting the names of debugging things. This cuts down

on the number of times a std::string is created and copied.

llvm-svn: 66396

4 files changed, 23 insertions, 15 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index a0ed4755f9f..229376d293c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -319,8 +319,9 @@ bool FastISel::SelectCall(User *I) {
     DbgStopPointInst *SPI = cast<DbgStopPointInst>(I);
     if (DW && DW->ValidDebugInfo(SPI->getContext())) {
       DICompileUnit CU(cast<GlobalVariable>(SPI->getContext()));
-      unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(),
-                                                 CU.getFilename());
+      std::string Dir, FN;
+      unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(Dir),
+                                                 CU.getFilename(FN));
       unsigned Line = SPI->getLine();
       unsigned Col = SPI->getColumn();
       unsigned ID = DW->RecordSourceLine(Line, Col, SrcFile);
@@ -361,8 +362,9 @@ bool FastISel::SelectCall(User *I) {
       // (most?) gdb expects.
       DISubprogram Subprogram(cast<GlobalVariable>(SP));
       DICompileUnit CompileUnit = Subprogram.getCompileUnit();
-      unsigned SrcFile = DW->getOrCreateSourceID(CompileUnit.getDirectory(),
-                                                 CompileUnit.getFilename());
+      std::string Dir, FN;
+      unsigned SrcFile = DW->getOrCreateSourceID(CompileUnit.getDirectory(Dir),
+                                                 CompileUnit.getFilename(FN));
 
       // Record the source line but does not create a label for the normal
       // function start. It will be emitted at asm emission time. However,
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 0854aad9b68..8c074e75ebf 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1287,8 +1287,9 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
       GlobalVariable *CU_GV = cast<GlobalVariable>(DSP->getCompileUnit());
       if (DW && (useDEBUG_LOC || useLABEL) && !CU_GV->isDeclaration()) {
         DICompileUnit CU(cast<GlobalVariable>(DSP->getCompileUnit()));
-        unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(),
-                                                   CU.getFilename());
+        std::string Dir, FN;
+        unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(Dir),
+                                                   CU.getFilename(FN));
 
         unsigned Line = DSP->getLine();
         unsigned Col = DSP->getColumn();
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index b3a06ea9d75..0dbc35b2248 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -335,8 +335,9 @@ void FunctionLoweringInfo::set(Function &fn, MachineFunction &mf,
 
             if (DW && DW->ValidDebugInfo(SPI->getContext())) {
               DICompileUnit CU(cast<GlobalVariable>(SPI->getContext()));
-              unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(),
-                                                         CU.getFilename());
+              std::string Dir, FN;
+              unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(Dir),
+                                                         CU.getFilename(FN));
               unsigned idx = MF->getOrCreateDebugLocID(SrcFile,
                                                        SPI->getLine(),
                                                        SPI->getColumn());
@@ -354,8 +355,9 @@ void FunctionLoweringInfo::set(Function &fn, MachineFunction &mf,
               if (DW->ValidDebugInfo(SP)) {
                 DISubprogram Subprogram(cast<GlobalVariable>(SP));
                 DICompileUnit CU(Subprogram.getCompileUnit());
-                unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(),
-                                                           CU.getFilename());
+                std::string Dir, FN;
+                unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(Dir),
+                                                           CU.getFilename(FN));
                 unsigned Line = Subprogram.getLineNumber();
                 DL = DebugLoc::get(MF->getOrCreateDebugLocID(SrcFile, Line, 0));
               }
@@ -3902,8 +3904,9 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
                                       SPI.getColumn(),
                                       SPI.getContext()));
       DICompileUnit CU(cast<GlobalVariable>(SPI.getContext()));
-      unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(),
-                                                 CU.getFilename());
+      std::string Dir, FN;
+      unsigned SrcFile = DW->getOrCreateSourceID(CU.getDirectory(Dir),
+                                                 CU.getFilename(FN));
       unsigned idx = MF.getOrCreateDebugLocID(SrcFile,
                                               SPI.getLine(), SPI.getColumn());
       setCurDebugLoc(DebugLoc::get(idx));
@@ -3947,8 +3950,9 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
       MachineFunction &MF = DAG.getMachineFunction();
       DISubprogram Subprogram(cast<GlobalVariable>(SP));
       DICompileUnit CompileUnit = Subprogram.getCompileUnit();
-      unsigned SrcFile = DW->getOrCreateSourceID(CompileUnit.getDirectory(),
-                                                 CompileUnit.getFilename());
+      std::string Dir, FN;
+      unsigned SrcFile = DW->getOrCreateSourceID(CompileUnit.getDirectory(Dir),
+                                                 CompileUnit.getFilename(FN));
 
       // Record the source line but does not create a label for the normal
       // function start. It will be emitted at asm emission time. However,
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index 004cb247b1f..03923387625 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -179,7 +179,8 @@ std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
     }
   } else if (const DbgStopPointSDNode *D = dyn_cast<DbgStopPointSDNode>(Node)) {
     DICompileUnit CU(cast<GlobalVariable>(D->getCompileUnit()));
-    Op += ": " + CU.getFilename();
+    std::string FN;
+    Op += ": " + CU.getFilename(FN);
     Op += ":" + utostr(D->getLine());
     if (D->getColumn() != 0)
       Op += ":" + utostr(D->getColumn());