[llvm] [RISCV] Use RISCV::RVVBitsPerBlock instead of 64 in getLMUL1VT. NFC (PR #144401)

[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/144401.diff


2 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVISelLowering.cpp (+1-1) 
- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 7cfada6c0601c..779786fa400fc 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -3499,7 +3499,7 @@ getVSlideup(SelectionDAG &DAG, const RISCVSubtarget &Subtarget, const SDLoc &DL,
 }
 
 static MVT getLMUL1VT(MVT VT) {
-  assert(VT.getVectorElementType().getSizeInBits() <= 64 &&
+  assert(VT.getVectorElementType().getSizeInBits() <= RISCV::RVVBitsPerBlock &&
          "Unexpected vector MVT");
   return MVT::getScalableVectorVT(
       VT.getVectorElementType(),
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index fcc9d3977e5cd..0093c92ea5ef0 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -604,7 +604,7 @@ InstructionCost RISCVTTIImpl::getSlideCost(FixedVectorType *Tp,
 
 // Consolidate!
 static MVT getLMUL1VT(MVT VT) {
-  assert(VT.getVectorElementType().getSizeInBits() <= 64 &&
+  assert(VT.getVectorElementType().getSizeInBits() <= RISCV::RVVBitsPerBlock &&
          "Unexpected vector MVT");
   return MVT::getScalableVectorVT(
       VT.getVectorElementType(),

``````````

</details>


https://github.com/llvm/llvm-project/pull/144401