[all-commits] [llvm/llvm-project] a292e7: Fix math-errno issue (#66381)

[Zahira Ammarguellat via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a292e7edf8b2fc51d3e86a96ff5dff45d16bd264
      https://github.com/llvm/llvm-project/commit/a292e7edf8b2fc51d3e86a96ff5dff45d16bd264
  Author: Zahira Ammarguellat <zahira.ammarguellat at intel.com>
  Date:   2023-09-19 (Tue, 19 Sep 2023)

  Changed paths:
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/test/CodeGen/math-builtins.c
    M clang/test/CodeGen/math-libcalls.c

  Log Message:
  -----------
  Fix math-errno issue (#66381)

Update handling of math errno. This change updates the logic for
generation of math intrinics in place of math library function calls.
The previous logic https://reviews.llvm.org/D151834 was incorrectly
using intrinsics when math errno handling was needed at optimization
levels above -O0.
This also fixes issue mentioned in https://reviews.llvm.org/D151834 by
@uabelho
This is joint work with @andykaylor Andy.