[PATCH] D51678: ARM: fix Thumb2 CodeGen for ldrex with folded frame-index

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


================
Comment at: llvm/lib/Target/ARM/ARMFrameLowering.cpp:1519
         case ARMII::AddrModeT2_i8s4:
+        case ARMII::AddrModeT2_ldrex:
           Limit = std::min(Limit, ((1U << 8) - 1) * 4);
----------------
I'm not sure I understand why AddrModeT2_i12 needs special handling, but AddrModeT2_ldrex doesn't; I think they have a similar restriction that they only support positive offsets?


Repository:
  rL LLVM

https://reviews.llvm.org/D51678