[llvm] [AMDGPU][NFC] Simplify assertions (PR #203472)

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<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Piotr Sobczak (piotrAMD)

<details>
<summary>Changes</summary>

Replace assertions that listed concrete types with generic ones that check that the type is a vector with an even number of elements.

This keeps the spirit of the assertions and matches the code.

---
Full diff: https://github.com/llvm/llvm-project/pull/203472.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/SIISelLowering.cpp (+2-14) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 3026d0dfa1dab..eb3b869990cdd 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -7485,13 +7485,7 @@ SDValue SITargetLowering::splitBinaryVectorOp(SDValue Op,
                                               SelectionDAG &DAG) const {
   unsigned Opc = Op.getOpcode();
   EVT VT = Op.getValueType();
-  assert(VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16 ||
-         VT == MVT::v4f32 || VT == MVT::v8i16 || VT == MVT::v8f16 ||
-         VT == MVT::v8bf16 || VT == MVT::v16i16 || VT == MVT::v16f16 ||
-         VT == MVT::v16bf16 || VT == MVT::v8f32 || VT == MVT::v16f32 ||
-         VT == MVT::v32f32 || VT == MVT::v32i16 || VT == MVT::v32f16 ||
-         VT == MVT::v32bf16 || VT == MVT::v4f64 || VT == MVT::v8f64 ||
-         VT == MVT::v16f64 || VT == MVT::v32f64);
+  assert(VT.isVector() && VT.getVectorElementCount().isKnownEven());
 
   auto [Lo0, Hi0] = DAG.SplitVectorOperand(Op.getNode(), 0);
   auto [Lo1, Hi1] = DAG.SplitVectorOperand(Op.getNode(), 1);
@@ -7510,13 +7504,7 @@ SDValue SITargetLowering::splitTernaryVectorOp(SDValue Op,
                                                SelectionDAG &DAG) const {
   unsigned Opc = Op.getOpcode();
   EVT VT = Op.getValueType();
-  assert(VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8i16 ||
-         VT == MVT::v8f16 || VT == MVT::v4f32 || VT == MVT::v16i16 ||
-         VT == MVT::v16f16 || VT == MVT::v8f32 || VT == MVT::v16f32 ||
-         VT == MVT::v32f32 || VT == MVT::v32f16 || VT == MVT::v32i16 ||
-         VT == MVT::v4bf16 || VT == MVT::v8bf16 || VT == MVT::v16bf16 ||
-         VT == MVT::v32bf16 || VT == MVT::v4f64 || VT == MVT::v8f64 ||
-         VT == MVT::v16f64 || VT == MVT::v16f64);
+  assert(VT.isVector() && VT.getVectorElementCount().isKnownEven());
 
   SDValue Op0 = Op.getOperand(0);
   auto [Lo0, Hi0] = Op0.getValueType().isVector()

``````````

</details>


https://github.com/llvm/llvm-project/pull/203472