[llvm] [RISCV] Remove isCodeGenOnly=0 from PseudoLA_TLSDESC. (PR #205366)

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<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>

The default for a Pseudo is isCodeGenOnly=1. With isCodeGenOnly=0 the 'la.tlsdesc' is a valid mnemonic for the assembly parser, but crashes in the encoder.

I don't think this was meant to be a valid assembly mnemonic so remove it.

---
Full diff: https://github.com/llvm/llvm-project/pull/205366.diff


1 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVInstrInfo.td (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.td b/llvm/lib/Target/RISCV/RISCVInstrInfo.td
index 6c776c91ae73a..90a3fd7bf3de9 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfo.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.td
@@ -1955,7 +1955,7 @@ let hasSideEffects = 0, mayLoad = 0, mayStore = 0, Size = 8,
 def PseudoLA_TLS_GD : Pseudo<(outs GPR:$dst), (ins bare_symbol:$src), [],
                              "la.tls.gd", "$dst, $src">;
 
-let hasSideEffects = 0, mayLoad = 1, mayStore = 0, Size = 32, isCodeGenOnly = 0 in
+let hasSideEffects = 0, mayLoad = 1, mayStore = 0, Size = 32 in
 def PseudoLA_TLSDESC : Pseudo<(outs GPR:$dst), (ins bare_symbol:$src), [],
                              "la.tlsdesc", "$dst, $src">;
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/205366