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, 63 deletions

diff --git a/llvm/test/Transforms/LoopUnswitch/elseif-non-exponential-behavior.ll b/llvm/test/Transforms/LoopUnswitch/elseif-non-exponential-behavior.ll
deleted file mode 100644
index b328aaae973..00000000000
--- a/llvm/test/Transforms/LoopUnswitch/elseif-non-exponential-behavior.ll
+++ /dev/null
@@ -1,63 +0,0 @@
-; RUN: opt -loop-unswitch -S - < %s | FileCheck %s
-; RUN: opt -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -S - < %s | FileCheck %s
-
-;CHECK-LABEL: @b
-;CHECK: [[Loop1:for\.end.*]]:                              ; preds = %for.cond.us
-;CHECK-NEXT:  %[[PhiVar1:pdt.*]] = phi i32 [ %pdt.0.us, %for.cond.us ]
-;CHECK: [[Loop2:for\.end.*]]:                     ; preds = %for.cond.us1
-;CHECK-NEXT:  %[[PhiVar2:pdt.*]] = phi i32 [ %pdt.0.us2, %for.cond.us1 ]
-;CHECK: [[Loop3:for\.end.*]]:                        ; preds = %for.cond
-;CHECK-NEXT:  %[[PhiVar3:pdt.*]] = phi i32 [ %pdt.0, %for.cond ]
-;CHECK: [[Join1:for\.end.*]]:                                 ; preds = %[[Loop2]], %[[Loop3]]
-;CHECK-NEXT:  %[[PhiRes1:pdt.*]] = phi i32 [ %[[PhiVar3]], %[[Loop3]] ], [ %[[PhiVar2]], %[[Loop2]] ]
-;CHECK: for.end:                                          ; preds = %[[Loop1]], %[[Join1]]
-;CHECK-NEXT:  %[[PhiRes2:pdt.*]] = phi i32 [ %[[PhiRes1]], %[[Join1]] ], [ %[[PhiVar1]], %[[Loop1]] ]
-;CHECK-NEXT:  ret i32 %[[PhiRes2]]
-
-; Function Attrs: nounwind uwtable
-define i32 @b(i32 %x, i32 %y) #0 {
-entry:
-  br label %for.cond
-
-for.cond:                                         ; preds = %for.inc, %entry
-  %pdt.0 = phi i32 [ 1, %entry ], [ %pdt.2, %for.inc ]
-  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
-  %cmp = icmp slt i32 %i.0, 100
-  br i1 %cmp, label %for.body, label %for.end
-
-for.body:                                         ; preds = %for.cond
-  %tobool = icmp ne i32 %x, 0
-  br i1 %tobool, label %if.then, label %if.else
-
-if.then:                                          ; preds = %for.body
-  %mul = mul nsw i32 %pdt.0, 2
-  br label %if.end6
-
-if.else:                                          ; preds = %for.body
-  %tobool1 = icmp ne i32 %y, 0
-  br i1 %tobool1, label %if.then2, label %if.else4
-
-if.then2:                                         ; preds = %if.else
-  %mul3 = mul nsw i32 %pdt.0, 3
-  br label %if.end
-
-if.else4:                                         ; preds = %if.else
-  %mul5 = mul nsw i32 %pdt.0, 4
-  br label %if.end
-
-if.end:                                           ; preds = %if.else4, %if.then2
-  %pdt.1 = phi i32 [ %mul3, %if.then2 ], [ %mul5, %if.else4 ]
-  br label %if.end6
-
-if.end6:                                          ; preds = %if.end, %if.then
-  %pdt.2 = phi i32 [ %mul, %if.then ], [ %pdt.1, %if.end ]
-  br label %for.inc
-
-for.inc:                                          ; preds = %if.end6
-  %inc = add nsw i32 %i.0, 1
-  br label %for.cond
-
-for.end:                                          ; preds = %for.cond
-  ret i32 %pdt.0
-}
-