[llvm] r299370 - Bitcode: Remove reader support for MODULE_CODE_PURGEVALS.

[Peter Collingbourne via llvm-commits]

Author: pcc
Date: Mon Apr  3 12:58:48 2017
New Revision: 299370

URL: http://llvm.org/viewvc/llvm-project?rev=299370&view=rev
Log:
Bitcode: Remove reader support for MODULE_CODE_PURGEVALS.

Support for writing this module code was removed in r73220, which was well
before the LLVM 3.0 release, so we do not need to be able to understand it
for backwards compatibility.

Differential Revision: https://reviews.llvm.org/D31563

Modified:
    llvm/trunk/docs/BitCodeFormat.rst
    llvm/trunk/include/llvm/Bitcode/LLVMBitCodes.h
    llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp
    llvm/trunk/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp

Modified: llvm/trunk/docs/BitCodeFormat.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/BitCodeFormat.rst?rev=299370&r1=299369&r2=299370&view=diff
==============================================================================
--- llvm/trunk/docs/BitCodeFormat.rst (original)
+++ llvm/trunk/docs/BitCodeFormat.rst Mon Apr  3 12:58:48 2017
@@ -839,16 +839,6 @@ fields are
 * *unnamed_addr*: If present, an encoding of the
   :ref:`unnamed_addr<bcunnamedaddr>` attribute of this alias
 
-MODULE_CODE_PURGEVALS Record
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-``[PURGEVALS, numvals]``
-
-The ``PURGEVALS`` record (code 10) resets the module-level value list to the
-size given by the single operand value. Module-level value list items are added
-by ``GLOBALVAR``, ``FUNCTION``, and ``ALIAS`` records.  After a ``PURGEVALS``
-record is seen, new value indices will start from the given *numvals* value.
-
 .. _MODULE_CODE_GCNAME:
 
 MODULE_CODE_GCNAME Record

Modified: llvm/trunk/include/llvm/Bitcode/LLVMBitCodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Bitcode/LLVMBitCodes.h?rev=299370&r1=299369&r2=299370&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Bitcode/LLVMBitCodes.h (original)
+++ llvm/trunk/include/llvm/Bitcode/LLVMBitCodes.h Mon Apr  3 12:58:48 2017
@@ -92,9 +92,6 @@ enum ModuleCodes {
   // ALIAS: [alias type, aliasee val#, linkage, visibility]
   MODULE_CODE_ALIAS_OLD = 9,
 
-  // MODULE_CODE_PURGEVALS: [numvals]
-  MODULE_CODE_PURGEVALS = 10,
-
   MODULE_CODE_GCNAME = 11, // GCNAME: [strchr x N]
   MODULE_CODE_COMDAT = 12, // COMDAT: [selection_kind, name]
 

Modified: llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp?rev=299370&r1=299369&r2=299370&view=diff
==============================================================================
--- llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp (original)
+++ llvm/trunk/lib/Bitcode/Reader/BitcodeReader.cpp Mon Apr  3 12:58:48 2017
@@ -3060,13 +3060,6 @@ Error BitcodeReader::parseModule(uint64_
       IndirectSymbolInits.push_back(std::make_pair(NewGA, Val));
       break;
     }
-    /// MODULE_CODE_PURGEVALS: [numvals]
-    case bitc::MODULE_CODE_PURGEVALS:
-      // Trim down the value list to the specified size.
-      if (Record.size() < 1 || Record[0] > ValueList.size())
-        return error("Invalid record");
-      ValueList.shrinkTo(Record[0]);
-      break;
     /// MODULE_CODE_VSTOFFSET: [offset]
     case bitc::MODULE_CODE_VSTOFFSET:
       if (Record.size() < 1)

Modified: llvm/trunk/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp?rev=299370&r1=299369&r2=299370&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp (original)
+++ llvm/trunk/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp Mon Apr  3 12:58:48 2017
@@ -171,7 +171,6 @@ static const char *GetCodeName(unsigned
       STRINGIFY_CODE(MODULE_CODE, GLOBALVAR)
       STRINGIFY_CODE(MODULE_CODE, FUNCTION)
       STRINGIFY_CODE(MODULE_CODE, ALIAS)
-      STRINGIFY_CODE(MODULE_CODE, PURGEVALS)
       STRINGIFY_CODE(MODULE_CODE, GCNAME)
       STRINGIFY_CODE(MODULE_CODE, VSTOFFSET)
       STRINGIFY_CODE(MODULE_CODE, METADATA_VALUES_UNUSED)