From 75c9b9384f50e9387f24dd7ce6af403cbda6d19a Mon Sep 17 00:00:00 2001
From: Kevin Enderby <enderby@apple.com>
Date: Wed, 16 Jan 2013 17:46:23 +0000
Subject: We want the dwarf AT_producer for assembly source files to match
 clang's AT_producer.  Which includes clang's version information so we can
 tell which version of the compiler was used.

This is the first of two steps to allow us to do that.  This is the llvm-mc
change to provide a method to set the AT_producer string.  The second step,
coming soon to a clang near you, will have the clang driver pass the value
of getClangFullVersion() via an flag when invoking the integrated assembler
on assembly source files.

rdar://12955296


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172630 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvm-mc/llvm-mc.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'tools/llvm-mc')

diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index e77f27e6dd..118dd4398d 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -236,6 +236,13 @@ static void setDwarfDebugFlags(int argc, char **argv) {
   }
 }
 
+static std::string DwarfDebugProducer;
+static void setDwarfDebugProducer(void) {
+  if(!getenv("DEBUG_PRODUCER"))
+    return;
+  DwarfDebugProducer += getenv("DEBUG_PRODUCER");
+}
+
 static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, tool_output_file *Out) {
 
   AsmLexer Lexer(MAI);
@@ -353,6 +360,8 @@ int main(int argc, char **argv) {
   TripleName = Triple::normalize(TripleName);
   setDwarfDebugFlags(argc, argv);
 
+  setDwarfDebugProducer();
+
   const char *ProgName = argv[0];
   const Target *TheTarget = GetTarget(ProgName);
   if (!TheTarget)
@@ -393,6 +402,8 @@ int main(int argc, char **argv) {
   Ctx.setGenDwarfForAssembly(GenDwarfForAssembly);
   if (!DwarfDebugFlags.empty())
     Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags));
+  if (!DwarfDebugProducer.empty())
+    Ctx.setDwarfDebugProducer(StringRef(DwarfDebugProducer));
   if (!DebugCompilationDir.empty())
     Ctx.setCompilationDir(DebugCompilationDir);
   if (!MainFileName.empty())
-- 
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