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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299370 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/BitCodeFormat.rst b/docs/BitCodeFormat.rst
index 3c9aa10..a9a1235 100644 (file)
--- a/docs/BitCodeFormat.rst
+++ b/docs/BitCodeFormat.rst
@@ -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

diff --git a/include/llvm/Bitcode/LLVMBitCodes.h b/include/llvm/Bitcode/LLVMBitCodes.h
index 8d84fef..e2d2fbb 100644 (file)
--- a/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/include/llvm/Bitcode/LLVMBitCodes.h
@@ -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]
 

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index 4198d8f..23649e8 100644 (file)
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -3060,13 +3060,6 @@ Error BitcodeReader::parseModule(uint64_t ResumeBit,
       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)

diff --git a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
index 6f14421..abc6fa2 100644 (file)
--- a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
+++ b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
@@ -171,7 +171,6 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
       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)