[PATCH] D84502: [AArch64][GlobalISel] Implement __builtin_return_address for PAC-RET

[Momchil Velikov via Phabricator via llvm-commits]

chill planned changes to this revision.
chill marked an inline comment as done.
chill added inline comments.


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Comment at: llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp:4796
+        Register TmpReg = MRI.createVirtualRegister(&AArch64::GPR64RegClass);
+        MIRBuilder.buildCopy({TmpReg}, {LiveInLR});
+        MIRBuilder.buildInstr(AArch64::XPACI, {DstReg}, {TmpReg});
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arsenm wrote:
> Why do you need this temporary copy?
Nevermind, the patch is completely broken, I'll work on a new version.


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https://reviews.llvm.org/D84502