Add a form of EOL which emits the text version of a DWARF format encoding. This

doesn't handle all values of the formatting. Those can be added as needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80427 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h
index 55fc3b0da86b658f5801e6e7bd00ecc5a0605aa1..8ce56c81b9afcaee7af64845d85cce2b0d2faca4 100644 (file)
--- a/include/llvm/CodeGen/AsmPrinter.h
+++ b/include/llvm/CodeGen/AsmPrinter.h
@@ -268,7 +268,9 @@ namespace llvm {
     void EOL() const;
     void EOL(const std::string &Comment) const;
     void EOL(const char* Comment) const;
-    
+    void EOL(const std::string &Comment, unsigned Encoding) const;
+    void EOL(const char *Comment, unsigned Encoding) const;
+
     /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
     /// unsigned leb128 value.
     void EmitULEB128Bytes(unsigned Value) const;

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 23f62dba2c1d6d7e4e153dd7987f3fbae3320896..f06db8e1a03176fe8a05c871ab085d919f4e579f 100644 (file)
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -604,6 +604,56 @@ void AsmPrinter::EOL(const char* Comment) const {
   O << '\n';
 }
 
+static const char *DecodeDWARFEncoding(unsigned Encoding) {
+  switch (Encoding) {
+  case dwarf::DW_EH_PE_absptr:
+    return "absptr";
+  case dwarf::DW_EH_PE_omit:
+    return "omit";
+  case dwarf::DW_EH_PE_pcrel:
+    return "pcrel";
+  case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata4:
+    return "pcrel udata4";
+  case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4:
+    return "pcrel sdata4";
+  case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8:
+    return "pcrel udata8";
+  case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8:
+    return "pcrel sdata8";
+  case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata4:
+    return "indirect pcrel udata4";
+  case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata4:
+    return "indirect pcrel sdata4";
+  case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata8:
+    return "indirect pcrel udata8";
+  case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata8:
+    return "indirect pcrel sdata8";
+  }
+
+  return 0;
+}
+
+void AsmPrinter::EOL(const std::string &Comment, unsigned Encoding) const {
+  if (VerboseAsm && !Comment.empty()) {
+    EOL(Comment.c_str(), Encoding);
+    return;
+  }
+  O << '\n';
+}
+
+void AsmPrinter::EOL(const char *Comment, unsigned Encoding) const {
+  if (VerboseAsm && *Comment) {
+    O.PadToColumn(MAI->getCommentColumn());
+    O << MAI->getCommentString()
+      << ' '
+      << Comment;
+
+    if (const char *EncStr = DecodeDWARFEncoding(Encoding))
+      O << " (" << EncStr << ')';
+  }
+  O << '\n';
+}
+
 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
 /// unsigned leb128 value.
 void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {