Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Transforms/LoopStrengthReduce/X86/2011-07-20-DoubleIV.ll

@@ -1,47 +0,0 @@
-; RUN: opt < %s -loop-reduce -S -mtriple=x86_64-unknown-unknown | FileCheck %s
-;
-; Test LSR's OptimizeShadowIV. Handle a floating-point IV with a
-; nonzero initial value.
-; rdar://9786536
-
-; Provide legal integer types.
-target datalayout = "n8:16:32:64"
-
-
-; First, make sure LSR doesn't crash on an empty IVUsers list.
-; CHECK-LABEL: @dummyIV(
-; CHECK-NOT: phi
-; CHECK-NOT: sitofp
-; CHECK: br
-define void @dummyIV() nounwind {
-entry:
-  br label %loop
-
-loop:
-  %i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ]
-  %conv = sitofp i32 %i.01 to double
-  %inc = add nsw i32 %i.01, 1
-  br i1 undef, label %loop, label %for.end
-
-for.end:
-  unreachable
-}
-
-; Now check that the computed double constant is correct.
-; CHECK-LABEL: @doubleIV(
-; CHECK: phi double [ -3.900000e+01, %entry ]
-; CHECK: br
-define void @doubleIV() nounwind {
-entry:
-  br label %loop
-
-loop:
-  %i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ]
-  %conv = sitofp i32 %i.01 to double
-  %div = fdiv double %conv, 4.000000e+01
-  %inc = add nsw i32 %i.01, 1
-  br i1 undef, label %loop, label %for.end
-
-for.end:
-  unreachable
-}