[Bug target/116693] [RISC-V] @tlsdesc generates duplicate assembler labels

[palmer at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #2 from Palmer Dabbelt <palmer at gcc dot gnu.org> ---
I think something like this

diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
index 9f94b5aa023..c64c881d152 100644
--- a/gcc/config/riscv/riscv.md
+++ b/gcc/config/riscv/riscv.md
@@ -2334,10 +2334,10 @@ (define_insn "@tlsdesc<mode>"
    (clobber (reg:P T0_REGNUM))]
   "TARGET_TLSDESC"
   {
-    return ".LT%1: auipc\ta0,%%tlsdesc_hi(%0)\;"
-           "<load>\tt0,%%tlsdesc_load_lo(.LT%1)(a0)\;"
-           "addi\ta0,a0,%%tlsdesc_add_lo(.LT%1)\;"
-           "jalr\tt0,t0,%%tlsdesc_call(.LT%1)";
+    return ".LT%=: auipc\ta0,%%tlsdesc_hi(%0)\;"
+           "<load>\tt0,%%tlsdesc_load_lo(.LT%=)(a0)\;"
+           "addi\ta0,a0,%%tlsdesc_add_lo(.LT%=)\;"
+           "jalr\tt0,t0,%%tlsdesc_call(.LT%=)";
   }
   [(set_attr "type" "multi")
    (set_attr "length" "16")

would do it?  My setup looks broken locally for LTO, though, so I can't quite
reproduce it right now...