[llvm-bugs] [Bug 39467] New: [X86] Replace X86ISD SHLD\SHRD with ISD FSHL\FSHR

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Oct 27 10:39:03 PDT 2018


https://bugs.llvm.org/show_bug.cgi?id=39467

            Bug ID: 39467
           Summary: [X86] Replace X86ISD SHLD\SHRD with ISD FSHL\FSHR
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
                    spatel+llvm at rotateright.com

Now that the funnel shift intrinsics are in place we should be able to remove
the X86ISD specific SHLD\SHRD handling and replace it with generic ISD opcodes.

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