https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116693

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-09-12

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Either tlsdesc should be marked as cannot copy (via
TARGET_CANNOT_COPY_INSN_P hook which on riscv uses get_attr_cannot_copy) or use
%= .


This is the simple cannot copy patch:
diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
index 9f94b5aa023..906c826d402 100644
--- a/gcc/config/riscv/riscv.md
+++ b/gcc/config/riscv/riscv.md
@@ -2341,6 +2341,7 @@ (define_insn "@tlsdesc<mode>"
   }
   [(set_attr "type" "multi")
    (set_attr "length" "16")
+   (set_attr "cannot_copy" "yes")
    (set_attr "mode" "<MODE>")])

 (define_insn "auipc<mode>"

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