[LLVMbugs] [Bug 2482] New: llvm-gcc emits twice as much debug info when compiling instcombine at -O0 -g than GCC

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2482

           Summary: llvm-gcc emits twice as much debug info when compiling
                    instcombine at -O0 -g than GCC
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Keywords: slow-compile
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org
                CC: llvmbugs at cs.uiuc.edu


When compiling instcombine at -O0 -g with llvm-g++ we get almost twice as much
debug info as GCC produces:

gcc 4.2:
Section (__DWARF, __debug_info): 671478
Section (__DWARF, __debug_line): 126106

llvm-gcc 4.2:
Section (__DWARF, __debug_info): 1240778
Section (__DWARF, __debug_line): 149797


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