[llvm] [LLVM][IR] Add support for address space names in DataLayout (PR #170559)

[Alexander Richardson via llvm-commits]

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@@ -687,19 +748,37 @@ DataLayout::getPointerSpec(uint32_t AddrSpace) const {
 void DataLayout::setPointerSpec(uint32_t AddrSpace, uint32_t BitWidth,
                                 Align ABIAlign, Align PrefAlign,
                                 uint32_t IndexBitWidth, bool HasUnstableRepr,
-                                bool HasExternalState) {
+                                bool HasExternalState,
+                                StringRef AddrSpaceName) {
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arichardson wrote:

Don't we have access to these offsets at all the call sites? Probably no need to recompute them 

https://github.com/llvm/llvm-project/pull/170559