[PATCH] D105491: [clang] Use i64 for the !srcloc metadata on asm IR nodes.

[Simon Tatham via Phabricator via cfe-commits]

simon_tatham created this revision.
simon_tatham added reviewers: rsmith, lebedev.ri, akyrtzi.
Herald added subscribers: dexonsmith, hiraditya.
simon_tatham requested review of this revision.
Herald added projects: clang, LLVM.
Herald added subscribers: llvm-commits, cfe-commits.

This is part of a patch series working towards the ability to make
SourceLocation into a 64-bit type to handle larger translation units.

!srcloc is generated in clang codegen, and pulled back out by llvm
functions like AsmPrinter::emitInlineAsm that need to report errors in
the inline asm. From there it goes to LLVMContext::emitError, is
stored in DiagnosticInfoInlineAsm, and ends up back in clang, at
BackendConsumer::InlineAsmDiagHandler(), which reconstitutes a true
clang::SourceLocation from the integer cookie.

Throughout this code path, it's now 64-bit rather than 32, which means
that if SourceLocation is expanded to a 64-bit type, this error report
won't lose half of the data.

Patch originally by Mikhail Maltsev.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105491

Files:
  clang/lib/CodeGen/CGStmt.cpp
  llvm/include/llvm/IR/DiagnosticInfo.h
  llvm/include/llvm/IR/LLVMContext.h
  llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
  llvm/lib/CodeGen/MachineInstr.cpp
  llvm/lib/IR/LLVMContext.cpp

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