[NFC][InstSimplify] Use more intuitive variable names.

Author: junparser

llvm/lib/Analysis/InstructionSimplify.cpp

@@ -5784,12 +5784,10 @@ static Value *simplifyIntrinsic(CallBase *Call, const SimplifyQuery &Q) {
       auto Attr = Call->getFunction()->getFnAttribute(Attribute::VScaleRange);
       if (!Attr.isValid())
         return nullptr;
-      unsigned MinScalarVectorSize, MaxScalarVectorSize;
-      std::tie(MinScalarVectorSize, MaxScalarVectorSize) =
-          Attr.getVScaleRangeArgs();
-      if (MinScalarVectorSize == MaxScalarVectorSize &&
-          MaxScalarVectorSize != 0)
-        return ConstantInt::get(F->getReturnType(), MinScalarVectorSize);
+      unsigned VScaleMin, VScaleMax;
+      std::tie(VScaleMin, VScaleMax) = Attr.getVScaleRangeArgs();
+      if (VScaleMin == VScaleMax && VScaleMax != 0)
+        return ConstantInt::get(F->getReturnType(), VScaleMin);
       return nullptr;
     }
     default:

llvm/test/Transforms/InstSimplify/fold-vscale.ll

@@ -1,24 +1,24 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -instsimplify -S | FileCheck %s
 
-define i64 @vscale_i64() #1 {
-; CHECK-LABEL: @vscale_i64(
+define i64 @vscale_i64_range_1_1() #1 {
+; CHECK-LABEL: @vscale_i64_range_1_1(
 ; CHECK-NEXT:    ret i64 1
 ;
   %out = call i64 @llvm.vscale.i64()
   ret i64 %out
 }
 
-define i32 @vscale_i32() #2 {
-; CHECK-LABEL: @vscale_i32(
+define i32 @vscale_i32_range_2_2() #2 {
+; CHECK-LABEL: @vscale_i32_range_2_2(
 ; CHECK-NEXT:    ret i32 2
 ;
   %out = call i32 @llvm.vscale.i32()
   ret i32 %out
 }
 
-define i64 @vscale_i64_diff() #3 {
-; CHECK-LABEL: @vscale_i64_diff(
+define i64 @vscale_i64_range_2_4() #3 {
+; CHECK-LABEL: @vscale_i64_range_2_4(
 ; CHECK-NEXT:    [[OUT:%.*]] = call i64 @llvm.vscale.i64()
 ; CHECK-NEXT:    ret i64 [[OUT]]
 ;