Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

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

@@ -1,41 +0,0 @@
-; RUN: opt < %s -loop-reduce -S | FileCheck %s
-
-target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
-
-; for (int i = 0; i < n; ++i) {
-;   use(i * 5 + 3);
-;   // i * a + b is ephemeral and shouldn't be promoted by LSR
-;   __builtin_assume(i * a + b >= 0);
-; }
-define void @ephemeral(i32 %a, i32 %b, i32 %n) {
-; CHECK-LABEL: @ephemeral(
-entry:
-  br label %loop
-
-loop:
-  %i = phi i32 [ 0, %entry ], [ %inc, %loop ]
-  ; Only i and i * 5 + 3 should be indvars, not i * a + b.
-; CHECK: phi i32
-; CHECK: phi i32
-; CHECK-NOT: phi i32
-  %inc = add nsw i32 %i, 1
-  %exitcond = icmp eq i32 %inc, %n
-
-  %0 = mul nsw i32 %i, 5
-  %1 = add nsw i32 %0, 3
-  call void @use(i32 %1)
-
-  %2 = mul nsw i32 %i, %a
-  %3 = add nsw i32 %2, %b
-  %4 = icmp sgt i32 %3, -1
-  call void @llvm.assume(i1 %4)
-
-  br i1 %exitcond, label %exit, label %loop
-
-exit:
-  ret void
-}
-
-declare void @use(i32)
-
-declare void @llvm.assume(i1)