[PATCH] D76055: [SystemZ] Improve foldMemoryOperandImpl().

[Jonas Paulsson via Phabricator via llvm-commits]

jonpa marked an inline comment as done.
jonpa added inline comments.


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Comment at: llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp:1133
 
+  if (Opcode == SystemZ::LEFR) {
+    Register DstReg = MI.getOperand(0).getReg();
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This handles just some 30-40 cases so I am not sure how useful this is, but I suppose it can be.

There are a few more (50?) unhandled cases of LEFR/LFER that appear to require things like new opcodes with special handlings or similar ('%gr64bit = LFER %vr32bit' for instance seems awkward to handle ...)


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  https://reviews.llvm.org/D76055/new/

https://reviews.llvm.org/D76055