================
@@ -440,8 +461,12 @@ Error DataLayout::parsePointerSpec(StringRef Spec) {
return createStringError(
"index size cannot be larger than the pointer size");
+ if (ExternalState && BitWidth == IndexBitWidth)
+ return createStringError(
+ "pointers with external state must be non-integral");
----------------
nikic wrote:
Why can't we have a pointer with external state but no non-address bits? Say a
hypothetical architecture that stores the entire capability in external state
rather than only a validity bit.
https://github.com/llvm/llvm-project/pull/105735
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