1 files changed, 65 insertions, 0 deletions
diff --git a/sys-devel/llvm/files/llvm-3.1-fix_debug_line_info.patch b/sys-devel/llvm/files/llvm-3.1-fix_debug_line_info.patch
new file mode 100644
index 0000000..de2d46b
--- /dev/null
+++ b/sys-devel/llvm/files/llvm-3.1-fix_debug_line_info.patch
@@ -0,0 +1,65 @@
+From 737fdba46f2b2b7d39bc728d15ea2334c44779e0 Mon Sep 17 00:00:00 2001
+From: Ben Longbons <b.r.longbons@gmail.com>
+Date: Fri, 29 Jun 2012 12:58:34 -0700
+Subject: [PATCH] Revert "Patch to set is_stmt a little better for prologue
+ lines in a function."
+
+This meants that the debugger could find meaningful line information.
+
+This reverts commit 60b35f408bc3194e7ea4e96367c0b42dc5e7f850.
+---
+ lib/CodeGen/AsmPrinter/DwarfDebug.cpp |    7 ++-----
+ test/DebugInfo/X86/ending-run.ll      |    6 ++----
+ 2 files changed, 4 insertions(+), 9 deletions(-)
+
+diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+index 3e79a6d..24aedfb 100644
+--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
++++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+@@ -1093,15 +1093,12 @@ void DwarfDebug::beginInstruction(const MachineInstr *MI) {
+   if (!MI->isDebugValue()) {
+     DebugLoc DL = MI->getDebugLoc();
+     if (DL != PrevInstLoc && (!DL.isUnknown() || UnknownLocations)) {
+-      unsigned Flags = 0;
++      unsigned Flags = DWARF2_FLAG_IS_STMT;
+       PrevInstLoc = DL;
+       if (DL == PrologEndLoc) {
+         Flags |= DWARF2_FLAG_PROLOGUE_END;
+         PrologEndLoc = DebugLoc();
+       }
+-      if (PrologEndLoc.isUnknown())
+-        Flags |= DWARF2_FLAG_IS_STMT;
+-
+       if (!DL.isUnknown()) {
+         const MDNode *Scope = DL.getScope(Asm->MF->getFunction()->getContext());
+         recordSourceLine(DL.getLine(), DL.getCol(), Scope, Flags);
+@@ -1382,7 +1379,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
+                                        MF->getFunction()->getContext());
+     recordSourceLine(FnStartDL.getLine(), FnStartDL.getCol(),
+                      FnStartDL.getScope(MF->getFunction()->getContext()),
+-                     0);
++                     DWARF2_FLAG_IS_STMT);
+   }
+ }
+ 
+diff --git a/test/DebugInfo/X86/ending-run.ll b/test/DebugInfo/X86/ending-run.ll
+index 6935c47..0cd3de1 100644
+--- a/test/DebugInfo/X86/ending-run.ll
++++ b/test/DebugInfo/X86/ending-run.ll
+@@ -1,11 +1,9 @@
+ ; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
+ ; RUN: llvm-dwarfdump %t | FileCheck %s
+ 
+-; Check that the line table starts at 7, not 4, but that the first
+-; statement isn't until line 8.
++; Check that the line table starts at 7, not 4.
+ 
+-; CHECK-NOT: 0x0000000000000000      7      0      1   0  is_stmt
+-; CHECK: 0x0000000000000000      7      0      1   0
++; CHECK: 0x0000000000000000      7      0      1   0  is_stmt
+ ; CHECK: 0x0000000000000004      8     18      1   0  is_stmt prologue_end
+ 
+ define i32 @callee(i32 %x) nounwind uwtable ssp {
+-- 
+1.7.10
+