diff options
| author | Manman Ren <mren@apple.com> | 2013-03-07 01:42:00 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2013-03-07 01:42:00 +0000 |
| commit | 3de61b4c0144748e4b9157e2c22fe4ea685981a2 (patch) | |
| tree | 76198e1cb0e2d2e257ac269f9cd6175087d2d3bd /lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp | |
| parent | 55d8f6d49023de5182efbb29d0b3bd0035909d62 (diff) | |
Debug Info: store the files and directories for each compile unit.
We now emit a line table for each compile unit. To reduce the prologue size
of each line table, the files and directories used by each compile unit are
stored in std::map<unsigned, std::vector< > > instead of std::vector< >.
The prologue for a lto'ed image can be as big as 93K. Duplicating 93K for each
compile unit causes a huge increase of debug info. With this patch, each
prologue will only emit the files required by the compile unit.
rdar://problem/13342023
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176605 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp')
| -rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp index d9f6b5eb0a..bc3f27cf2a 100644 --- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp +++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp @@ -241,7 +241,8 @@ void CompileUnit::addSourceLine(DIE *Die, DIVariable V) { if (Line == 0) return; unsigned FileID = DD->getOrCreateSourceID(V.getContext().getFilename(), - V.getContext().getDirectory()); + V.getContext().getDirectory(), + getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); @@ -257,7 +258,8 @@ void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) { unsigned Line = G.getLineNumber(); if (Line == 0) return; - unsigned FileID = DD->getOrCreateSourceID(G.getFilename(), G.getDirectory()); + unsigned FileID = DD->getOrCreateSourceID(G.getFilename(), G.getDirectory(), + getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); @@ -276,7 +278,7 @@ void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) { return; unsigned FileID = DD->getOrCreateSourceID(SP.getFilename(), - SP.getDirectory()); + SP.getDirectory(), getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); @@ -293,7 +295,7 @@ void CompileUnit::addSourceLine(DIE *Die, DIType Ty) { if (Line == 0) return; unsigned FileID = DD->getOrCreateSourceID(Ty.getFilename(), - Ty.getDirectory()); + Ty.getDirectory(), getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); @@ -311,7 +313,7 @@ void CompileUnit::addSourceLine(DIE *Die, DIObjCProperty Ty) { return; DIFile File = Ty.getFile(); unsigned FileID = DD->getOrCreateSourceID(File.getFilename(), - File.getDirectory()); + File.getDirectory(), getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); @@ -329,7 +331,8 @@ void CompileUnit::addSourceLine(DIE *Die, DINameSpace NS) { return; StringRef FN = NS.getFilename(); - unsigned FileID = DD->getOrCreateSourceID(FN, NS.getDirectory()); + unsigned FileID = DD->getOrCreateSourceID(FN, NS.getDirectory(), + getUniqueID()); assert(FileID && "Invalid file id"); addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID); addUInt(Die, dwarf::DW_AT_decl_line, 0, Line); |