tree c0c2ff52c76c6507e68ec18a77d6e294ac86203c
parent 96dfd1e61d99d3d29251a1d371af437645f324c3
author Deric C. <cheung.deric@gmail.com> 1747085017 -0700
committer GitHub <noreply@github.com> 1747085017 -0700
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[DirectX] Disable all libcalls for DXIL in TargetLibraryInfo.cpp (#138991)

Fixes #138787

To the best of my knowledge, DXIL does not (and should not) support any
of the libcalls in
[`TargetLibraryInfo.def`](https://github.com/llvm/llvm-project/blob/main/llvm/include/llvm/Analysis/TargetLibraryInfo.def).
Math libcalls are not used in HLSL and also do not have lowerings to
DXIL. (The current implementation of math functions are done via
intrinsics.)
If there is a mistake with disabling all libcalls, then the libcalls we
need can be re-enabled in a follow-up PR.

---------

Co-authored-by: Justin Bogner <mail@justinbogner.com>