[llvm] [Hexagon] Prevent optimizing out counter reads (PR #182338)

[Alexey Karyakin via llvm-commits]

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@@ -349,6 +349,16 @@ def LDriw_ctr : LDInst<(outs CtrRegs:$dst),
                         (ins IntRegs:$addr, s32_0Imm:$off),
                         ".error \"should not emit\"", []>;
 
+let isCodeGenOnly = 1, isPseudo = 1, hasSideEffects = 1 in {
+  def PS_TfrCRR : InstHexagon<(outs IntRegs:$Rd32), (ins CtrRegs:$Cs32),
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quic-akaryaki wrote:

Aesthetics is not my strong side. Thanks! I will rename.

https://github.com/llvm/llvm-project/pull/182338