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, 122 deletions

diff --git a/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll b/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll
deleted file mode 100644
index 430127b3cd5..00000000000
--- a/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll
+++ /dev/null
@@ -1,122 +0,0 @@
-; RUN: opt < %s -loop-reduce -S | FileCheck %s
-
-; LSR shouldn't consider %t8 to be an interesting user of %t6, and it
-; should be able to form pretty GEPs.
-
-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"
-
-define void @Z4() nounwind {
-; CHECK-LABEL: define void @Z4(
-bb:
-  br label %bb3
-
-bb1:                                              ; preds = %bb3
-  br i1 undef, label %bb10, label %bb2
-
-bb2:                                              ; preds = %bb1
-  %t = add i64 %t4, 1                         ; <i64> [#uses=1]
-  br label %bb3
-
-bb3:                                              ; preds = %bb2, %bb
-  %t4 = phi i64 [ %t, %bb2 ], [ 0, %bb ]      ; <i64> [#uses=3]
-  br label %bb1
-
-; CHECK: bb10:
-; CHECK-NEXT: %t7 = icmp eq i64 %t4, 0
-; Host %t2 computation outside the loop.
-; CHECK-NEXT: [[SCEVGEP:%[^ ]+]] = getelementptr i8, i8* undef, i64 %t4
-; CHECK-NEXT: br label %bb14
-bb10:                                             ; preds = %bb9
-  %t7 = icmp eq i64 %t4, 0                    ; <i1> [#uses=1]
-  %t3 = add i64 %t4, 16                     ; <i64> [#uses=1]
-  br label %bb14
-
-; CHECK: bb14:
-; CHECK-NEXT: store i8 undef, i8* [[SCEVGEP]]
-; CHECK-NEXT: %t6 = load float*, float** undef
-; Fold %t3's add within the address.
-; CHECK-NEXT: [[SCEVGEP1:%[^ ]+]] = getelementptr float, float* %t6, i64 4
-; CHECK-NEXT: [[SCEVGEP2:%[^ ]+]] = bitcast float* [[SCEVGEP1]] to i8*
-; Use the induction variable (%t4) to access the right element
-; CHECK-NEXT: [[ADDRESS:%[^ ]+]] = getelementptr i8, i8* [[SCEVGEP2]], i64 %t4
-; CHECK-NEXT: store i8 undef, i8* [[ADDRESS]]
-; CHECK-NEXT: br label %bb14
-bb14:                                             ; preds = %bb14, %bb10
-  %t2 = getelementptr inbounds i8, i8* undef, i64 %t4 ; <i8*> [#uses=1]
-  store i8 undef, i8* %t2
-  %t6 = load float*, float** undef
-  %t8 = bitcast float* %t6 to i8*              ; <i8*> [#uses=1]
-  %t9 = getelementptr inbounds i8, i8* %t8, i64 %t3 ; <i8*> [#uses=1]
-  store i8 undef, i8* %t9
-  br label %bb14
-}
-
-define fastcc void @TransformLine() nounwind {
-; CHECK-LABEL: @TransformLine(
-bb:
-  br label %loop0
-
-; CHECK: loop0:
-; Induction variable is initialized to -2.
-; CHECK-NEXT: [[PHIIV:%[^ ]+]] = phi i32 [ [[IVNEXT:%[^ ]+]], %loop0 ], [ -2, %bb ]
-; CHECK-NEXT: [[IVNEXT]] = add nuw nsw i32 [[PHIIV]], 1
-; CHECK-NEXT: br i1 false, label %loop0, label %bb0
-loop0:                                            ; preds = %loop0, %bb
-  %i0 = phi i32 [ %i0.next, %loop0 ], [ 0, %bb ]  ; <i32> [#uses=2]
-  %i0.next = add i32 %i0, 1                       ; <i32> [#uses=1]
-  br i1 false, label %loop0, label %bb0
-
-bb0:                                              ; preds = %loop0
-  br label %loop1
-
-; CHECK: loop1:
-; CHECK-NEXT: %i1 = phi i32 [ 0, %bb0 ], [ %i1.next, %bb5 ]
-; IVNEXT covers the uses of %i0 and %t0.
-; Therefore, %t0 has been removed.
-; The critical edge has been split.
-; CHECK-NEXT: br i1 false, label %bb2, label %[[LOOP1BB6:.+]]
-loop1:                                            ; preds = %bb5, %bb0
-  %i1 = phi i32 [ 0, %bb0 ], [ %i1.next, %bb5 ]   ; <i32> [#uses=4]
-  %t0 = add i32 %i0, %i1                          ; <i32> [#uses=1]
-  br i1 false, label %bb2, label %bb6
-
-; CHECK: bb2:
-; Critical edge split.
-; CHECK-NEXT: br i1 true, label %[[BB2BB6:[^,]+]], label %bb5
-bb2:                                              ; preds = %loop1
-  br i1 true, label %bb6, label %bb5
-
-; CHECK: bb5:
-; CHECK-NEXT: %i1.next = add i32 %i1, 1
-; CHECK-NEXT: br i1 true, label %[[BB5BB6:[^,]+]], label %loop1
-bb5:                                              ; preds = %bb2
-  %i1.next = add i32 %i1, 1                       ; <i32> [#uses=1]
-  br i1 true, label %bb6, label %loop1
-
-; bb5 to bb6 split basic block.
-; CHECK: [[BB5BB6]]:
-; CHECK-NEXT: [[INITIALVAL:%[^ ]+]] = add i32 [[IVNEXT]], %i1.next
-; CHECK-NEXT: br label %[[SPLITTOBB6:.+]]
-
-; bb2 to bb6 split basic block.
-; CHECK: [[BB2BB6]]:
-; CHECK-NEXT: br label %[[SPLITTOBB6]]
-
-; Split basic blocks to bb6.
-; CHECK: [[SPLITTOBB6]]:
-; CHECK-NEXT: [[INITP8:%[^ ]+]] = phi i32 [ [[INITIALVAL]], %[[BB5BB6]] ], [ undef, %[[BB2BB6]] ]
-; CHECK-NEXT: [[INITP9:%[^ ]+]] = phi i32 [ undef, %[[BB5BB6]] ], [ %i1, %[[BB2BB6]] ]
-; CHECK-NEXT: br label %bb6
-  
-; CHECK: [[LOOP1BB6]]:
-; CHECK-NEXT: br label %bb6
-
-; CHECK: bb6:
-; CHECK-NEXT: %p8 = phi i32 [ undef, %[[LOOP1BB6]] ], [ [[INITP8]], %[[SPLITTOBB6]] ]
-; CHECK-NEXT: %p9 = phi i32 [ %i1, %[[LOOP1BB6]] ], [ [[INITP9]], %[[SPLITTOBB6]] ]
-; CHECK-NEXT: unreachable
-bb6:                                              ; preds = %bb5, %bb2, %loop1
-  %p8 = phi i32 [ %t0, %bb5 ], [ undef, %loop1 ], [ undef, %bb2 ] ; <i32> [#uses=0]
-  %p9 = phi i32 [ undef, %bb5 ], [ %i1, %loop1 ], [ %i1, %bb2 ] ; <i32> [#uses=0]
-  unreachable
-}