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, 36 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/undef-inst-bug.ll b/llvm/test/Transforms/LoopVectorize/undef-inst-bug.ll
deleted file mode 100644
index e9d053cf0be..00000000000
--- a/llvm/test/Transforms/LoopVectorize/undef-inst-bug.ll
+++ /dev/null
@@ -1,36 +0,0 @@
-; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 < %s | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-
-; We use to fail on this loop because we did not properly handle the loop
-; invariant instruction anchored in the loop when used as a getelementptr index.
-; We would use the index from the original loop resulting in a use not dominated
-; by the definition.
-
-; PR16452
-
-; Verify that we don't miscompile this loop.
-
-; CHECK-LABEL: @t(
-; CHECK: <4 x i32>
-
-define void @t() {
-entry:
-  br label %for.body
-
-for.body:
-  %indvars.iv17 = phi i64 [ %indvars.next, %for.body ], [ 128, %entry ]
-
-  ; Loop invariant anchored in loop.
-  %idxprom21 = zext i32 undef to i64
-
-  %arrayidx23 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* undef, i64 0, i64 %idxprom21, i64 %indvars.iv17
-  store i32 undef, i32* %arrayidx23, align 4
-  %indvars.next= add i64 %indvars.iv17, -1
-  %0 = trunc i64 %indvars.next to i32
-  %cmp15 = icmp ugt i32 %0, undef
-  br i1 %cmp15, label %for.body, label %loopexit
-
-loopexit:
-  ret void
-}