[PATCH] D111497: m68k: Support bit shifts on 64-bit integers

Sat Oct 9 11:46:51 PDT 2021

jrtc27 added inline comments.

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Comment at: llvm/test/CodeGen/M68k/Arith/bitwise.ll:241
+; CHECK-NEXT:    move.l (16,%sp), (%sp)
+; CHECK-NEXT:    jsr __lshrdi3 at PLT
+; CHECK-NEXT:    adda.l #12, %sp
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Hm now why is this being turned into a libcall, I'd expect Expand to inline it. RISC-V has custom lowering you could copy, but that lowering looks pretty generic (just turn XLEN into the width of the first operand).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111497/new/

https://reviews.llvm.org/D111497