[llvm-branch-commits] [llvm] AMDGPU: Reduce cost of f64 copysign (PR #141944)

[Matt Arsenault via llvm-branch-commits]

================
@@ -741,8 +743,8 @@ GCNTTIImpl::getIntrinsicInstrCost(const 
IntrinsicCostAttributes &ICA,
   case Intrinsic::copysign:
     return NElts * getFullRateInstrCost();
   case Intrinsic::canonicalize: {
-    assert(SLT != MVT::f64);
-    InstRate = getFullRateInstrCost();
+    InstRate =
+        SLT == MVT::f64 ? get64BitInstrCost(CostKind) : getFullRateInstrCost();
     break;
   }
   case Intrinsic::uadd_sat:
----------------
arsenm wrote:

They are only integer intrinsics 

https://github.com/llvm/llvm-project/pull/141944
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