[llvm] [LLVM][NVPTX]: Add intrinsic for setmaxnreg (PR #77289)

[Durgadoss R via llvm-commits]

================
@@ -164,6 +164,10 @@ def True : Predicate<"true">;
 class hasPTX<int version>: Predicate<"Subtarget->getPTXVersion() >= " # version>;
 class hasSM<int version>: Predicate<"Subtarget->getSmVersion() >= " # version>;
 
+// Explicit records for arch-accelerated SM versions
+def hasSM90a : Predicate<"Subtarget->getSmVersion() == 90"
+                          "&& Subtarget->getFullSmVersion() == 901">;
----------------
durga4github wrote:

I believe it should not be. sm_91 will correspond to a FullSmVersion value of 910 (900+10) from how it is defined in NVPTXSubtarget.h. Please let me know if you think otherwise.

https://github.com/llvm/llvm-project/pull/77289