[llvm] [NVPTX] Support llvm.exp2 for f32 and vector of f32 (PR #120519)

[Princeton Ferro via llvm-commits]

================
@@ -0,0 +1,47 @@
+; RUN: llc < %s -march=nvptx64 -mcpu=sm_52 -mattr=+ptx86 | FileCheck --check-prefixes=CHECK %s
+; RUN: %if ptxas-12.6 %{ llc < %s -march=nvptx64 -mcpu=sm_52 -mattr=+ptx86 | %ptxas-verify -arch=sm_52 %}
----------------
Prince781 wrote:

Changed to `ptxas-12.0` and using PTX 1.4.

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