[llvm] [NVPTX] Support llvm.{exp2, log2} for f32/f16/bf16 and vectors (PR #120519)

[Princeton Ferro via llvm-commits]

================
@@ -0,0 +1,274 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 -mattr=+ptx32 -nvptx-approx-exp2f32 | FileCheck --check-prefixes=CHECK %s
+; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 -mattr=+ptx32 -enable-unsafe-fp-math | FileCheck --check-prefixes=CHECK %s
+; RUN: %if ptxas-12.0 %{ llc < %s -march=nvptx64 -mcpu=sm_20 -mattr=+ptx32 -nvptx-approx-exp2f32 | %ptxas-verify -arch=sm_20 %}
+target triple = "nvptx64-nvidia-cuda"
+
+; RUN: not --crash llc < %s -march=nvptx64 -mcpu=sm_20 -mattr=+ptx32 2>&1 | FileCheck --check-prefixes=ERR %s
----------------
Prince781 wrote:

Added comment.

https://github.com/llvm/llvm-project/pull/120519