Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

1 files changed, 0 insertions, 48 deletions

diff --git a/llvm/test/Transforms/LoopLoadElim/multiple-stores-same-block.ll b/llvm/test/Transforms/LoopLoadElim/multiple-stores-same-block.ll
deleted file mode 100644
index b0c0f3dee86..00000000000
--- a/llvm/test/Transforms/LoopLoadElim/multiple-stores-same-block.ll
+++ /dev/null
@@ -1,48 +0,0 @@
-; RUN: opt -basicaa -loop-load-elim -S < %s | FileCheck %s
-
-; In this case the later store forward to the load:
-;
-;   for (unsigned i = 0; i < 100; i++) {
-;     B[i] = A[i] + 1;
-;     A[i+1] = C[i] + 2;
-;     A[i+1] = D[i] + 3;
-;   }
-
-target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
-
-define void @f(i32* noalias nocapture %A, i32* noalias nocapture readonly %B,
-               i32* noalias nocapture %C, i32* noalias nocapture readonly %D,
-               i64 %N) {
-entry:
-; CHECK: %load_initial = load i32, i32* %A
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-; CHECK: %store_forwarded = phi i32 [ %load_initial, %entry ], [ %addD, %for.body ]
-  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
-  %arrayidxA = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
-  %loadA = load i32, i32* %arrayidxA, align 4
-; CHECK: %addA = add i32 %store_forwarded, 1
-  %addA = add i32 %loadA, 1
-
-  %arrayidxB = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
-  store i32 %addA, i32* %arrayidxB, align 4
-
-  %arrayidxC = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
-  %loadC = load i32, i32* %arrayidxC, align 4
-  %addC = add i32 %loadC, 2
-  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
-  %arrayidxA_next = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next
-  store i32 %addC, i32* %arrayidxA_next, align 4
-
-  %arrayidxD = getelementptr inbounds i32, i32* %D, i64 %indvars.iv
-  %loadD = load i32, i32* %arrayidxD, align 4
-  %addD = add i32 %loadD, 3
-  store i32 %addD, i32* %arrayidxA_next, align 4
-
-  %exitcond = icmp eq i64 %indvars.iv.next, %N
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-  ret void
-}