[PATCH] D55402: [AMDGPU] Simplify negated condition

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle added inline comments.


================
Comment at: lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp:140
+
+  auto *And = TRI->findReachingDef(CondReg, AMDGPU::NoSubRegister,
+                                   *I, MRI, LIS);
----------------
Does this (and the other findReachingDef) need to be guarded to ensure the instructions come from the same basic block?

Or, to be more precise, against changes to EXEC in between?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55402/new/

https://reviews.llvm.org/D55402