[PATCH] D135514: [RISCV] If sign extended values that return from calls, remove sign extended node

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/test/CodeGen/RISCV/libcall-tail-calls.ll:89
 ; RV64-ALL-NEXT:    call __muldi3 at plt
-; RV64-ALL-NEXT:    sext.w a0, a0
 ; RV64-ALL-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
----------------
This isn't a valid transform. __muldi3 returns a full 64-bit value. The sign extend is not removable.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D135514/new/

https://reviews.llvm.org/D135514