[lld] [llvm] [lld][WebAssembly] Support for the custom-page-sizes WebAssembly proposal (PR #128942)

[Sam Clegg via llvm-commits]

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@@ -455,8 +456,10 @@ void Writer::layoutMemory() {
   }
 
   if (ctx.arg.initialMemory != 0) {
-    if (ctx.arg.initialMemory != alignTo(ctx.arg.initialMemory, WasmPageSize))
-      error("initial memory must be " + Twine(WasmPageSize) + "-byte aligned");
+    if (ctx.arg.initialMemory !=
+        alignTo(ctx.arg.initialMemory, ctx.arg.pageSize))
+      error("initial memory must be aligned to the page size (" +
+            Twine(ctx.arg.pageSize) + " bytes)");
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sbc100 wrote:

Would it be worth adding a little helper here `checkPageAligned(StringRef OptName, int value)` to avoid repeating these error in bunch of places.

https://github.com/llvm/llvm-project/pull/128942