Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/test/Transforms/LoopStrengthReduce/count-to-zero.ll

@@ -1,45 +0,0 @@
-; RUN: opt < %s -loop-reduce -S | FileCheck %s
-; rdar://7382068
-
-; Provide legal integer types.
-target datalayout = "n8:16:32:64"
-
-define void @t(i32 %c) nounwind optsize {
-entry:
-  br label %bb6
-
-bb1:                                              ; preds = %bb6
-  %tmp = icmp eq i32 %c_addr.1, 20                ; <i1> [#uses=1]
-  br i1 %tmp, label %bb2, label %bb3
-
-bb2:                                              ; preds = %bb1
-  %tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1]
-  br label %bb7
-
-bb3:                                              ; preds = %bb1
-  %tmp2 = icmp slt i32 %c_addr.1, 10              ; <i1> [#uses=1]
-  %tmp3 = add nsw i32 %c_addr.1, 1                ; <i32> [#uses=1]
-  %tmp4 = add i32 %c_addr.1, -1                   ; <i32> [#uses=1]
-  %c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1]
-  %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=1]
-; CHECK: add nsw i32 %lsr.iv, -1
-  br label %bb6
-
-bb6:                                              ; preds = %bb3, %entry
-  %indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2]
-  %c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7]
-  %tmp5 = icmp eq i32 %indvar, 9999               ; <i1> [#uses=1]
-; CHECK: icmp eq i32 %lsr.iv, 0
-  %tmp6 = icmp eq i32 %c_addr.1, 100              ; <i1> [#uses=1]
-  %or.cond = or i1 %tmp5, %tmp6                   ; <i1> [#uses=1]
-  br i1 %or.cond, label %bb7, label %bb1
-
-bb7:                                              ; preds = %bb6, %bb2
-  %c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1]
-  tail call void @bar(i32 %c_addr.0) nounwind
-  ret void
-}
-
-declare i32 @f20(i32)
-
-declare void @bar(i32)