[llvm] [SandboxIR][NFC] Fixes for LoadInst::create functions (PR #100955)

[via llvm-commits]

================
@@ -750,37 +750,59 @@ define void @foo(ptr %arg0, ptr %arg1) {
   auto *BB = &*F->begin();
   auto It = BB->begin();
   auto *Ld = cast<sandboxir::LoadInst>(&*It++);
-  auto *Vld = cast<sandboxir::LoadInst>(&*It++);
+  auto *VLd = cast<sandboxir::LoadInst>(&*It++);
   auto *Ret = cast<sandboxir::ReturnInst>(&*It++);
 
   // Check isVolatile()
   EXPECT_FALSE(Ld->isVolatile());
   // Check isVolatile()
-  EXPECT_TRUE(Vld->isVolatile());
+  EXPECT_TRUE(VLd->isVolatile());
   // Check getPointerOperand()
   EXPECT_EQ(Ld->getPointerOperand(), Arg0);
   // Check getAlign()
   EXPECT_EQ(Ld->getAlign(), 64);
-  // Check create(InsertBefore)
+  // Check create(InsertBefore, IsVolatile=false)
----------------
vporpo wrote:

nit: Well, the `create()` function that we are calling here is the one without the `IsVolatile` argument, so it's probably best to change the comment to something like `// Check create(InsertBefore)` even though internally we do set IsVolatile=false.

https://github.com/llvm/llvm-project/pull/100955