[llvm] [DataLayout] Introduce DataLayout::getPointerAddressSize(AS) (PR #137412)

[Sergei Barannikov via llvm-commits]

================
@@ -312,12 +312,12 @@ TEST(DataLayout, ParsePointerSpec) {
         "p16777215:32:32:64:8", "p16777215:16777215:32768:32768:16777215"})
     EXPECT_THAT_EXPECTED(DataLayout::parse(Str), Succeeded());
 
-  for (StringRef Str :
-       {"p", "p0", "p:32", "p0:32", "p:32:32:32:32:32", "p0:32:32:32:32:32"})
+  for (StringRef Str : {"p", "p0", "p:32", "p0:32", "p:32:32:32:32:32:32",
+                        "p0:32:32:32:32:32:32"})
     EXPECT_THAT_EXPECTED(
         DataLayout::parse(Str),
         FailedWithMessage("malformed specification, must be of the form "
-                          "\"p[<n>]:<size>:<abi>[:<pref>[:<idx>]]\""));
+                          "\"p[<n>]:<size>:<abi>[:<pref>[:<idx>[:<addr>]]]\""));
----------------
s-barannikov wrote:

The point of this nesting is that you can only specify `idx` iff you also specify `pref`. I guess this applies to `addr` as well.

https://github.com/llvm/llvm-project/pull/137412