Revert r276136 "Use ValueOffsetPair to enhance value reuse during SCEV expansion."

It causes Clang tests to fail after Windows self-host (PR28705).

(Also reverts follow-up r276139.)

llvm-svn: 276822

1 files changed, 0 insertions, 44 deletions

diff --git a/llvm/test/Analysis/ScalarEvolution/scev-expander-existing-value-offset.ll b/llvm/test/Analysis/ScalarEvolution/scev-expander-existing-value-offset.ll
deleted file mode 100644
index 20f822e1ad2..00000000000
--- a/llvm/test/Analysis/ScalarEvolution/scev-expander-existing-value-offset.ll
+++ /dev/null
@@ -1,44 +0,0 @@
-; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S |FileCheck %s
-; SCEV expansion uses existing value or value + offset to reduce duplicate code expansion so foo should only generate one select inst after loop vectorization.
-; CHECK-LABEL: @foo(
-; CHECK: select
-; CHECK-NOT: select
-
-@ySrcL = common global i8* null, align 8
-@smL = common global i32 0, align 4
-
-define void @foo(i32 %rwL, i32 %kL, i32 %xfL) {
-entry:
-  %sub = add nsw i32 %rwL, -1
-  %shr = ashr i32 %xfL, 6
-  %cmp.i = icmp slt i32 %sub, %shr
-  %cond.i = select i1 %cmp.i, i32 %sub, i32 %shr
-  %cmp6 = icmp sgt i32 %cond.i, %kL
-  br i1 %cmp6, label %for.body.lr.ph, label %for.end
-
-for.body.lr.ph:                                   ; preds = %entry
-  %tmp = load i8*, i8** @ySrcL, align 8
-  %tmp1 = sext i32 %kL to i64
-  %tmp2 = sext i32 %cond.i to i64
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %for.body.lr.ph
-  %indvars.iv = phi i64 [ %tmp1, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
-  %reduct.07 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
-  %arrayidx = getelementptr inbounds i8, i8* %tmp, i64 %indvars.iv
-  %tmp3 = load i8, i8* %arrayidx, align 1
-  %conv = zext i8 %tmp3 to i32
-  %add = add nsw i32 %conv, %reduct.07
-  %indvars.iv.next = add nsw i64 %indvars.iv, 1
-  %cmp = icmp slt i64 %indvars.iv.next, %tmp2
-  br i1 %cmp, label %for.body, label %for.end.loopexit
-
-for.end.loopexit:                                 ; preds = %for.body
-  %add.lcssa = phi i32 [ %add, %for.body ]
-  br label %for.end
-
-for.end:                                          ; preds = %for.end.loopexit, %entry
-  %reduct.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ]
-  store i32 %reduct.0.lcssa, i32* @smL, align 4
-  ret void
-}