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| author | Devang Patel <dpatel@apple.com> | 2011-03-01 22:58:13 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2011-03-01 22:58:13 +0000 |
| commit | e9e16c5f52c4a093f4de234d448cdebedab8938e (patch) | |
| tree | 30919eba1124cefad5813d264bfb9d0fb9e82131 /lib/Analysis/DIBuilder.cpp | |
| parent | d9f574b724a208ec38761e250d83fcc2480e685c (diff) | |
Today, the language front ends produces llvm.dbg.* intrinsics, used to encode arguments' debug info, in order any way, most of the times. However, if a front end mix-n-matches llvm.dbg.declare and llvm.dbg.value intrinsics to encode debug info for arguments then code generator needs a way to find argument order.
Use 8 bits from line number field to keep track of argument ordering while encoding debug info for an argument. That leaves 24 bit for line no, DebugLoc also allocates 24 bit for line numbers. If a function has more than 255 arguments then rest of the arguments will be ordered by llvm.dbg.* intrinsics' ordering in IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126793 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/DIBuilder.cpp')
| -rw-r--r-- | lib/Analysis/DIBuilder.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp index 590a9c17a8..766624f87c 100644 --- a/lib/Analysis/DIBuilder.cpp +++ b/lib/Analysis/DIBuilder.cpp @@ -586,13 +586,14 @@ createStaticVariable(DIDescriptor Context, StringRef Name, DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope, StringRef Name, DIFile File, unsigned LineNo, DIType Ty, - bool AlwaysPreserve, unsigned Flags) { + bool AlwaysPreserve, unsigned Flags, + unsigned ArgNo) { Value *Elts[] = { GetTagConstant(VMContext, Tag), Scope, MDString::get(VMContext, Name), File, - ConstantInt::get(Type::getInt32Ty(VMContext), LineNo), + ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24))), Ty, ConstantInt::get(Type::getInt32Ty(VMContext), Flags) }; @@ -620,13 +621,13 @@ DIVariable DIBuilder::createComplexVariable(unsigned Tag, DIDescriptor Scope, StringRef Name, DIFile F, unsigned LineNo, DIType Ty, Value *const *Addr, - unsigned NumAddr) { + unsigned NumAddr, unsigned ArgNo) { SmallVector<Value *, 15> Elts; Elts.push_back(GetTagConstant(VMContext, Tag)); Elts.push_back(Scope); Elts.push_back(MDString::get(VMContext, Name)); Elts.push_back(F); - Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)); + Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), (LineNo | (ArgNo << 24)))); Elts.push_back(Ty); Elts.append(Addr, Addr+NumAddr); @@ -642,7 +643,6 @@ DISubprogram DIBuilder::createFunction(DIDescriptor Context, bool isLocalToUnit, bool isDefinition, unsigned Flags, bool isOptimized, Function *Fn) { - Value *Elts[] = { GetTagConstant(VMContext, dwarf::DW_TAG_subprogram), llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)), |