[llvm-bugs] [Bug 50695] New: Merge c997867dc084a1bcf631816f964b3ff49a297ba3 to 12.0.1

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50695

            Bug ID: 50695
           Summary: Merge c997867dc084a1bcf631816f964b3ff49a297ba3 to
                    12.0.1
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: craig.topper at gmail.com
                CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
                    llvm-dev at redking.me.uk, pengfei.wang at intel.com,
                    spatel+llvm at rotateright.com

This fixes the miscompile reported here
https://llvm.discourse.group/t/bug-or-feature-freeze-instruction/3639

The fix is to exclude freeze inputs when determining if we need to emit an
instruction for (i64 (zext (i32 X))).

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