[lld] [llvm] [lld][COFF] Add support for IMAGE_REL_ARM64_BRANCH26 (PR #202588)

[Martin Storsjö via llvm-commits]

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@@ -318,13 +318,6 @@ static uint64_t adjustFixupValue(const MCFixup &Fixup, const MCValue &Target,
     return (Value >> 2) & 0xffff;
   case AArch64::fixup_aarch64_pcrel_branch26:
   case AArch64::fixup_aarch64_pcrel_call26:
-    if (TheTriple.isOSBinFormatCOFF() && !IsResolved && SignedValue != 0) {
-      // MSVC link.exe and lld do not support this relocation type
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mstorsjo wrote:

>From a quick test with the latest versions I have around, MS link.exe 14.51.36243.0 and 14.52.36405.1 (PREVIEW), it seems like it still doesn't handle the immediate like this for this relocation.

So therefore I don't think we should be doing this - at least unless there's a really good motivation to why we want to create object files that deviate from the upstream spec in very subtle ways.

https://github.com/llvm/llvm-project/pull/202588