[llvm-bugs] [Bug 31034] New: Refactoring lib/IR/AutoUpgrade.cpp file.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31034

            Bug ID: 31034
           Summary: Refactoring lib/IR/AutoUpgrade.cpp file.
           Product: new-bugs
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: ayman.musa at intel.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

llvm::UpgradeIntrinsicCall() function in lib/IR/AutoUpgrade.cpp source file
checks if the IR includes an old intrinsic and replaces it with the upgraded
IR.

The checks are implemented by a long "if else" sequence which some compilers
complain about when it gets too long (For example, Microsoft C++ compiler will
accept up to 127 if-else statements).

A refactoring to this "structure" should be considered as an effort to reduce
the use of llvm x86 specific intrinsics is being initiated, and as a result
many new cases will be added to the same control flow in the future.

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