[llvm] [SHT_LLVM_BB_ADDR] Implement ELF and YAML support for Propeller CFG data in PGO analysis map. (PR #164914)

[Rahman Lavaee via llvm-commits]

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@@ -65,8 +68,8 @@ Sections:
                Metadata:      0x00000003
 
 ## Check that yaml2obj generates a warning when we use unsupported feature.
-# RUN: yaml2obj --docnum=2  %s 2>&1 | FileCheck %s --check-prefix=INVALID-FEATURE
-# INVALID-FEATURE: warning: invalid encoding for BBAddrMap::Features: 0xf0
+# RUN: not yaml2obj --docnum=2  %s 2>&1 | FileCheck %s --check-prefix=INVALID-FEATURE
+# INVALID-FEATURE: error: out of range hex8 number
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rlavaee wrote:

Good point. I did briefly think about bumping it to hex16, but though I would do it a later PR. But now realized that would also require a version bump. So why not doing it here since we know the next upcoming feature will need the additional byte.

Also added a test to verify warnings related to old versions not supporting newer features.

https://github.com/llvm/llvm-project/pull/164914