diff options
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp | 7 | ||||
| -rw-r--r-- | llvm/test/DebugInfo/COFF/long-name.ll | 17 | 
2 files changed, 20 insertions, 4 deletions
| diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp index f1749fb6915..9e714e4c38d 100644 --- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp @@ -501,12 +501,12 @@ void CodeViewDebug::endModule() {    clear();  } -static void emitNullTerminatedSymbolName(MCStreamer &OS, StringRef S) { +static void emitNullTerminatedSymbolName(MCStreamer &OS, StringRef S, +    unsigned MaxFixedRecordLength = 0xF00) {    // The maximum CV record length is 0xFF00. Most of the strings we emit appear    // after a fixed length portion of the record. The fixed length portion should    // always be less than 0xF00 (3840) bytes, so truncate the string so that the    // overall record size is less than the maximum allowed. -  unsigned MaxFixedRecordLength = 0xF00;    SmallString<32> NullTerminatedString(        S.take_front(MaxRecordLength - MaxFixedRecordLength - 1));    NullTerminatedString.push_back('\0'); @@ -2448,6 +2448,7 @@ void CodeViewDebug::emitDebugInfoForGlobal(const DIGlobalVariable *DIGV,    // FIXME: Thread local data, etc    MCSymbol *DataBegin = MMI->getContext().createTempSymbol(),             *DataEnd = MMI->getContext().createTempSymbol(); +  const unsigned FixedLengthOfThisRecord = 12;    OS.AddComment("Record length");    OS.emitAbsoluteSymbolDiff(DataEnd, DataBegin, 2);    OS.EmitLabel(DataBegin); @@ -2475,6 +2476,6 @@ void CodeViewDebug::emitDebugInfoForGlobal(const DIGlobalVariable *DIGV,    OS.AddComment("Segment");    OS.EmitCOFFSectionIndex(GVSym);    OS.AddComment("Name"); -  emitNullTerminatedSymbolName(OS, DIGV->getName()); +  emitNullTerminatedSymbolName(OS, DIGV->getName(), FixedLengthOfThisRecord);    OS.EmitLabel(DataEnd);  } diff --git a/llvm/test/DebugInfo/COFF/long-name.ll b/llvm/test/DebugInfo/COFF/long-name.ll index 65bd4c16f75..fffa957ecbf 100644 --- a/llvm/test/DebugInfo/COFF/long-name.ll +++ b/llvm/test/DebugInfo/COFF/long-name.ll @@ -13,11 +13,22 @@  ; CHECK: ProcEnd {  ; CHECK: } +; CHECK: GlobalData { +; CHECK:   Kind: S_GDATA32 (0x110D) +; CHECK:   DataOffset: {{V+E}} +; CHECK:   Type: int (0x74) +; CHECK:   DisplayName: {{V+E}} +; CHECK:   LinkageName: {{V+E}} +; CHECK: } +; +  ; ModuleID = 't.c'  source_filename = "t.c"  target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"  target triple = "x86_64-pc-windows-msvc19.0.24210" 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