[llvm] [RISCV] Hoist a duplicate setOperationAction to a common place. NFC (PR #178364)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

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

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/178364.diff


1 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVISelLowering.cpp (+2-4) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 013102755281c..b7a70686ba790 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -1638,9 +1638,10 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
         setOperationAction({ISD::STRICT_FP_ROUND, ISD::STRICT_FP_EXTEND}, VT,
                            Custom);
 
+        setOperationAction(ISD::BITCAST, VT, Custom);
+
         if (VT.getVectorElementType() == MVT::f16 &&
             !Subtarget.hasVInstructionsF16()) {
-          setOperationAction(ISD::BITCAST, VT, Custom);
           setOperationAction({ISD::VP_FP_ROUND, ISD::VP_FP_EXTEND}, VT, Custom);
           setOperationAction(
               {ISD::VP_MERGE, ISD::VP_SELECT, ISD::VSELECT, ISD::SELECT}, VT,
@@ -1671,7 +1672,6 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
         }
 
         if (VT.getVectorElementType() == MVT::bf16) {
-          setOperationAction(ISD::BITCAST, VT, Custom);
           setOperationAction({ISD::VP_FP_ROUND, ISD::VP_FP_EXTEND}, VT, Custom);
           setOperationAction({ISD::LRINT, ISD::LLRINT}, VT, Custom);
           setOperationAction({ISD::LROUND, ISD::LLROUND}, VT, Custom);
@@ -1726,8 +1726,6 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
         setOperationAction(ISD::SETCC, VT, Custom);
         setOperationAction({ISD::VSELECT, ISD::SELECT}, VT, Custom);
 
-        setOperationAction(ISD::BITCAST, VT, Custom);
-
         setOperationAction(FloatingPointVecReduceOps, VT, Custom);
 
         setOperationAction(FloatingPointVPOps, VT, Custom);

``````````

</details>


https://github.com/llvm/llvm-project/pull/178364