[PATCH] D122212: [RISCV] Add alias to pack/packw

[LiqinWeng via Phabricator via llvm-commits]

Miss_Grape added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVInstrInfoZb.td:654
+let Predicates = [HasStdExtZbpOrZbkb, IsRV32] in {
+def : InstAlias<"zext.h $rd, $rs", (PACK GPR:$rd, GPR:$rs, X0), 0>;
+}
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benshi001 wrote:
> benshi001 wrote:
> > We need not such aliases, since there is real zext.h instruction.
> We need not two `zext.h`, maybe just one is OK, when ZBB is invalid.
real MI is PACK and PACKW，so just need Predicates = HasStdExtZbpOrZbkb


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122212/new/

https://reviews.llvm.org/D122212