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Today the front-ends (llvm-gcc and clang) generate multiple llvm.dbg.compile_units to identify source file for various debug entities. Each llvm.dbg.compile_unit matches one file on the disk. However, the backend only supports one DW_TAG_compile_unit per .o file. The backend selects first compile_unit from the vector to construct DW_TAG_compile_unit entry, which is not correct in all cases.

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First step to resolve this is, record file name and directory directly in debug info for various debug entities. 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61164 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2008-12-17 22:39:29 +00:00
parent c7a21941c5
commit 854967effe
3 changed files with 74 additions and 23 deletions
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include/llvm/CodeGen/MachineModuleInfo.h
+2 -1
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@@ -59,7 +59,8 @@ class StructType;
// Debug info constants.
enum {
LLVMDebugVersion = (6 << 16), // Current version of debug information.
LLVMDebugVersion = (7 << 16), // Current version of debug information.
LLVMDebugVersion6 = (6 << 16), // Constant for version 6.
LLVMDebugVersion5 = (5 << 16), // Constant for version 5.
LLVMDebugVersion4 = (4 << 16), // Constant for version 4.
LLVMDebugVersionMask = 0xffff0000 // Mask for version number.