[PATCH] D153193: [LoongArch] Optimize conditional selection of integer

[Xi Ruoyao via Phabricator via llvm-commits]

xry111 added inline comments.


================
Comment at: llvm/lib/Target/LoongArch/LoongArchInstrInfo.td:1202
 
+def : Pat<(select GPR:$cond, GPR:$t, (i32 0)), (MASKEQZ GPR:$t, GPR:$cond)>;
+def : Pat<(select GPR:$cond, (i32 0), GPR:$f), (MASKNEZ GPR:$f, GPR:$cond)>;
----------------
Can we just write

```
def : Pat<(select GPR:$cond, GPR:$t, 0), (MASKEQZ GPR:$t, GPR:$cond)>;
```

here?  I see RISC-V uses an untyped 0 in similar select patterns.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D153193/new/

https://reviews.llvm.org/D153193