[PATCH] D90217: [AMDGPU][GlobalISel] Fold a chain of two shift instructions with constant operands

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp:1587
+
+  MachineIRBuilder MIB(MI);
+  LLT Ty = MRI.getType(MI.getOperand(1).getReg());
----------------
Shouldn't construct a new MachineIRBuilder here


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D90217/new/

https://reviews.llvm.org/D90217