[llvm] [DAGCombiner] Avoid illegal scalar nodes in estimate refinement (PR #219394)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,155 @@
+; NOTE: Do not autogenerate
+; RUN: split-file %s %t
+; RUN: llc -O3 -relocation-model=pic %t/estimate.ll -o - | FileCheck %s --check-prefix=PIC --enable-var-scope --implicit-check-not='{{^[[:space:]]+sqrtps[[:space:]]}}' --implicit-check-not='{{^[[:space:]]+divps[[:space:]]}}'
----------------
arsenm wrote:

-O3 shouldn't be needed 

https://github.com/llvm/llvm-project/pull/219394