Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/LoopUnroll/ephemeral.ll

@@ -1,44 +0,0 @@
-; RUN: opt < %s -S -loop-unroll -unroll-threshold=50 | FileCheck %s
-
-; Make sure this loop is completely unrolled...
-; CHECK-LABEL: @test1
-; CHECK: for.body:
-; CHECK-NOT: for.end:
-
-define i32 @test1(i32* nocapture %a) nounwind uwtable readonly {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
-  %sum.01 = phi i32 [ 0, %entry ], [ %add, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %0 = load i32, i32* %arrayidx, align 4
-
-  ; This loop will be completely unrolled, even with these extra instructions,
-  ; but only because they're ephemeral (and, thus, free).
-  %1 = add nsw i32 %0, 2
-  %2 = add nsw i32 %1, 4
-  %3 = add nsw i32 %2, 4
-  %4 = add nsw i32 %3, 4
-  %5 = add nsw i32 %4, 4
-  %6 = add nsw i32 %5, 4
-  %7 = add nsw i32 %6, 4
-  %8 = add nsw i32 %7, 4
-  %9 = add nsw i32 %8, 4
-  %10 = add nsw i32 %9, 4
-  %ca = icmp sgt i32 %10, -7
-  call void @llvm.assume(i1 %ca)
-
-  %add = add nsw i32 %0, %sum.01
-  %indvars.iv.next = add i64 %indvars.iv, 1
-  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
-  %exitcond = icmp eq i32 %lftr.wideiv, 5
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-  ret i32 %add
-}
-
-declare void @llvm.assume(i1) nounwind
-