Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/IndVarSimplify/dont-recompute.ll

@@ -1,69 +0,0 @@
-; RUN: opt < %s -indvars -S | FileCheck %s
-
-; This tests that the IV is not recomputed outside of the loop when it is known
-; to be computed by the loop and used in the loop any way. In the example below
-; although a's value can be computed outside of the loop, there is no benefit
-; in doing so as it has to be computed by the loop anyway.
-;
-; extern void func(unsigned val);
-;
-; void test(unsigned m)
-; {
-;   unsigned a = 0;
-;
-;   for (int i=0; i<186; i++) {
-;     a += m;
-;     func(a);
-;   }
-;
-;   func(a);
-; }
-
-declare void @func(i32)
-
-; CHECK-LABEL: @test(
-define void @test(i32 %m) nounwind uwtable {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
-  %a.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
-  %add = add i32 %a.05, %m
-; CHECK: tail call void @func(i32 %add)
-  tail call void @func(i32 %add)
-  %inc = add nsw i32 %i.06, 1
-  %exitcond = icmp eq i32 %inc, 186
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-; CHECK: for.end:
-; CHECK-NOT: mul i32 %m, 186
-; CHECK:%add.lcssa = phi i32 [ %add, %for.body ]
-; CHECK-NEXT: tail call void @func(i32 %add.lcssa)
-  tail call void @func(i32 %add)
-  ret void
-}
-
-; CHECK-LABEL: @test2(
-define i32 @test2(i32 %m) nounwind uwtable {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
-  %a.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
-  %add = add i32 %a.05, %m
-; CHECK: tail call void @func(i32 %add)
-  tail call void @func(i32 %add)
-  %inc = add nsw i32 %i.06, 1
-  %exitcond = icmp eq i32 %inc, 186
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-; CHECK: for.end:
-; CHECK-NOT: mul i32 %m, 186
-; CHECK:%add.lcssa = phi i32 [ %add, %for.body ]
-; CHECK-NEXT: ret i32 %add.lcssa
-  ret i32 %add
-}