[IR] Remove support for icmp and fcmp constant expressions (#93038)

Remove support for the icmp and fcmp constant expressions.

This is part of:
https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179

As usual, many of the updated tests will no longer test what they were
originally intended to -- this is hard to preserve when constant
expressions get removed, and in many cases just impossible as the
existence of a specific kind of constant expression was the cause of the
issue in the first place.

1 files changed, 0 insertions, 8 deletions

diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index a2007a2..3c99bde 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -2835,14 +2835,6 @@ void ModuleBitcodeWriter::writeConstants(unsigned FirstVal, unsigned LastVal,
         Record.push_back(VE.getValueID(C->getOperand(1)));
         Record.push_back(VE.getValueID(CE->getShuffleMaskForBitcode()));
         break;
-      case Instruction::ICmp:
-      case Instruction::FCmp:
-        Code = bitc::CST_CODE_CE_CMP;
-        Record.push_back(VE.getTypeID(C->getOperand(0)->getType()));
-        Record.push_back(VE.getValueID(C->getOperand(0)));
-        Record.push_back(VE.getValueID(C->getOperand(1)));
-        Record.push_back(CE->getPredicate());
-        break;
       }
     } else if (const BlockAddress *BA = dyn_cast<BlockAddress>(C)) {
       Code = bitc::CST_CODE_BLOCKADDRESS;