[all-commits] [llvm/llvm-project] 5c2a13: Emit constrained atan2 intrinsic for clang builtin...

[Tex Riddell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c2a133b1342881dc4f42a896e7e5f4b85d20508
      https://github.com/llvm/llvm-project/commit/5c2a133b1342881dc4f42a896e7e5f4b85d20508
  Author: Tex Riddell <texr at microsoft.com>
  Date:   2024-11-12 (Tue, 12 Nov 2024)

  Changed paths:
    M clang/include/clang/Basic/Builtins.td
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/test/CodeGen/X86/math-builtins.c
    M clang/test/CodeGen/constrained-math-builtins.c
    M clang/test/CodeGen/libcalls.c
    M clang/test/CodeGen/math-libcalls.c
    M clang/test/CodeGenCXX/builtin-calling-conv.cpp
    M clang/test/CodeGenOpenCL/builtins-f16.cl
    M llvm/docs/LangRef.rst
    M llvm/test/CodeGen/ARM/fp-intrinsics.ll
    M llvm/test/CodeGen/PowerPC/ctrloop-constrained-fp.ll
    M llvm/test/CodeGen/PowerPC/ppcf128-constrained-fp-intrinsics.ll
    M llvm/test/CodeGen/PowerPC/vector-constrained-fp-intrinsics.ll
    M llvm/test/CodeGen/RISCV/double-intrinsics-strict.ll
    M llvm/test/CodeGen/RISCV/float-intrinsics-strict.ll
    M llvm/test/CodeGen/SystemZ/vector-constrained-fp-intrinsics.ll

  Log Message:
  -----------
  Emit constrained atan2 intrinsic for clang builtin (#113636)

This change is part of this proposal:
https://discourse.llvm.org/t/rfc-all-the-math-intrinsics/78294

- `Builtins.td` - Add f16 support for libm atan2 builtin
- `CGBuiltin.cpp` - Emit constraint atan2 intrinsic for clang builtin
- `clang/test/CodeGenCXX/builtin-calling-conv.cpp` - Use erff instead of
atan2 for clang builtin to lib call calling convention check, now that
atan2 maps to an intrinsic.
- add atan2 cases to llvm.experimental.constrained tests for more
backends: ARM, PowerPC, RISCV, SystemZ.
- LangRef.rst: add llvm.experimental.constrained.atan2, revise
llvm.atan2 description.

Last part of Implement the atan2 HLSL Function. Fixes #70096.



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