[PATCH] D27537: [AArch64] Correct the check of signed 9-bit imm in getIndexedAddressParts()

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


================
Comment at: lib/Target/AArch64/AArch64ISelLowering.cpp:10248
+    if (Op->getOpcode() == ISD::SUB)
+      RHSC *= -1;
+    if (!isInt<9>(RHSC))
----------------
This has undefined behavior if RHCS == INT64_MIN.


Repository:
  rL LLVM

https://reviews.llvm.org/D27537