[PATCH] D60021: InstSimplify: Fold round intrinsics from sitofp

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Do we not need any fast math flags here?

https://llvm.org/docs/LangRef.html#id276

  The ‘sitofp’ instruction interprets its operand as a signed integer quantity
  and converts it to the corresponding floating-point value. If the value cannot
  be exactly represented, it is rounded using the default rounding mode.



================
Comment at: test/Transforms/InstSimplify/round-intrinsics.ll:3
+; RUN: opt -S -instsimplify %s | FileCheck %s
+
+define float @sitofp_floor(i32 %arg) {
----------------
Please precommit test


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  https://reviews.llvm.org/D60021/new/

https://reviews.llvm.org/D60021