[llvm] [VPlan] Add initial CFG simplification, removing BranchOnCond true. (PR #106748)

[via llvm-commits]

================
@@ -2804,7 +2802,7 @@ define i32 @sink_into_replication_region(i32 %y) {
 ; UNROLL-NO-IC-NEXT:    [[VAR7]] = udiv i32 219220132, [[VAR3]]
 ; UNROLL-NO-IC-NEXT:    [[VAR8]] = add nsw i32 [[VAR3]], -1
 ; UNROLL-NO-IC-NEXT:    [[VAR9:%.*]] = icmp slt i32 [[VAR3]], 2
-; UNROLL-NO-IC-NEXT:    br i1 [[VAR9]], label [[BB1]], label [[BB2]], !prof [[PROF30:![0-9]+]], !llvm.loop [[LOOP31:![0-9]+]]
+; UNROLL-NO-IC-NEXT:    br i1 [[VAR9]], label [[BB1]], label [[BB2]], !prof [[PROF29:![0-9]+]], !llvm.loop [[LOOP30:![0-9]+]]
----------------
ayalz wrote:

This PROF#/LOOP# decrement change propagates all the way below.

https://github.com/llvm/llvm-project/pull/106748