[PATCH] D153326: [CSKY] Optimize subtraction with SUBI32/SUBI16

[Ben Shi via Phabricator via llvm-commits]

benshi001 added inline comments.


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Comment at: llvm/lib/Target/CSKY/CSKYInstrInfo.td:538
 
+  def : Pat<(add GPR:$rs1, (oimm12_neg:$im)),
+            (SUBI32 GPR:$rs1, (imm_neg_XFORM oimm12_neg:$im))>;
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zixuan-wu wrote:
> I think the similar Pat for SUBI16 should also be added when there is no SUBI32
I have added in the file `CSKYInstrInfo16Instr.td`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D153326/new/

https://reviews.llvm.org/D153326