[llvm-bugs] [Bug 40056] New: [X86][SSE] Replace X86ISD ADD\SUB saturation opcodes with ISD generics

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Dec 17 11:17:55 PST 2018


https://bugs.llvm.org/show_bug.cgi?id=40056

            Bug ID: 40056
           Summary: [X86][SSE] Replace X86ISD ADD\SUB saturation opcodes
                    with ISD generics
           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,
                    llvm-dev at redking.me.uk, nikita.ppv at gmail.com,
                    spatel+llvm at rotateright.com

As mentioned on [Bug #40053] we now should be able to replace the X86 specific
ADDS/SUBS/ADDUS/SUBUS opcodes+intrinsics with the generic add/sub saturations
equivalents - both in the frontend and the backend.

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