[llvm-bugs] [Bug 52112] New: __builtin_convertvector broken w/ __fp16 under WASM

via llvm-bugs llvm-bugs at lists.llvm.org
Fri Oct 8 02:26:39 PDT 2021


            Bug ID: 52112
           Summary: __builtin_convertvector broken w/ __fp16 under WASM
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: dsaritz at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Broken codegen for __builtin_convertvector under WASM when the source vector
uses __fp16.

Repro: https://godbolt.org/z/vTq165xvr
note: if you make the lp variable const the correct result is generated.

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