[PATCH] D147195: [RISCV] Support llvm.lround intrinsics with i32 return type on RV64.

[Craig Topper via Phabricator via llvm-commits]

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It seems that flang expects this to work. Even though long isn't
i32 on RV64 or most X86-64 platforms.

It's easy for us to support when we have native FP instructions.
I fell back to i64 and truncated the result otherwise. The
documentation for lround says it returns an unspecified value if
doesn't fit in the integer type. I have no idea what flang is
expecting. I really only did the libcall to avoid forking a test.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147195

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/double-intrinsics.ll
  llvm/test/CodeGen/RISCV/float-intrinsics.ll
  llvm/test/CodeGen/RISCV/zfh-half-intrinsics.ll

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