[llvm] [GISel] Add generic implementation for @llvm.expect.with.probability when optimizations are disabled (PR #117835)

[Matt Arsenault via llvm-commits]

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@@ -1,4 +1,5 @@
 ; RUN: llc < %s
+; RUN: llc -global-isel < %s
 
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arsenm wrote:

The existing test is woefully inadequate. Should fix this in a pre-commit. This needs to have checks, and should not be a "Generic" test. Those cannot exist 

https://github.com/llvm/llvm-project/pull/117835