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, 115 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/X86/parallel-loops.ll b/llvm/test/Transforms/LoopVectorize/X86/parallel-loops.ll
deleted file mode 100644
index be778850096..00000000000
--- a/llvm/test/Transforms/LoopVectorize/X86/parallel-loops.ll
+++ /dev/null
@@ -1,115 +0,0 @@
-; RUN: opt < %s  -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -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"
-target triple = "x86_64-unknown-linux-gnu"
-
-; A tricky loop:
-;
-; void loop(int *a, int *b) {
-;    for (int i = 0; i < 512; ++i) {
-;        a[a[i]] = b[i];
-;        a[i] = b[i+1];
-;    }
-;}
-
-;CHECK-LABEL: @loop(
-;CHECK-NOT: <4 x i32>
-define void @loop(i32* nocapture %a, i32* nocapture %b) nounwind uwtable {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %idxprom3 = sext i32 %1 to i64
-  %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3
-  store i32 %0, i32* %arrayidx4, align 4
-  %indvars.iv.next = add i64 %indvars.iv, 1
-  %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next
-  %2 = load i32, i32* %arrayidx6, align 4
-  store i32 %2, i32* %arrayidx2, align 4
-  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
-  %exitcond = icmp eq i32 %lftr.wideiv, 512
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-  ret void
-}
-
-; The same loop with parallel loop metadata added to the loop branch
-; and the memory instructions.
-
-;CHECK-LABEL: @parallel_loop(
-;CHECK: <4 x i32>
-define void @parallel_loop(i32* nocapture %a, i32* nocapture %b) nounwind uwtable {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
-  %0 = load i32, i32* %arrayidx, align 4, !llvm.access.group !13
-  %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %1 = load i32, i32* %arrayidx2, align 4, !llvm.access.group !13
-  %idxprom3 = sext i32 %1 to i64
-  %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3
-  ; This store might have originated from inlining a function with a parallel
-  ; loop. Refers to a list with the "original loop reference" (!4) also included.
-  store i32 %0, i32* %arrayidx4, align 4, !llvm.access.group !15
-  %indvars.iv.next = add i64 %indvars.iv, 1
-  %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next
-  %2 = load i32, i32* %arrayidx6, align 4, !llvm.access.group !13
-  store i32 %2, i32* %arrayidx2, align 4, !llvm.access.group !13
-  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
-  %exitcond = icmp eq i32 %lftr.wideiv, 512
-  br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !3
-
-for.end:                                          ; preds = %for.body
-  ret void
-}
-
-; The same loop with an illegal parallel loop metadata: the memory
-; accesses refer to a different loop's identifier.
-
-;CHECK-LABEL: @mixed_metadata(
-;CHECK-NOT: <4 x i32>
-
-define void @mixed_metadata(i32* nocapture %a, i32* nocapture %b) nounwind uwtable {
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
-  %0 = load i32, i32* %arrayidx, align 4, !llvm.access.group !16
-  %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %1 = load i32, i32* %arrayidx2, align 4, !llvm.access.group !16
-  %idxprom3 = sext i32 %1 to i64
-  %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3
-  ; This refers to the loop marked with !7 which we are not in at the moment.
-  ; It should prevent detecting as a parallel loop.
-  store i32 %0, i32* %arrayidx4, align 4, !llvm.access.group !17
-  %indvars.iv.next = add i64 %indvars.iv, 1
-  %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next
-  %2 = load i32, i32* %arrayidx6, align 4, !llvm.access.group !16
-  store i32 %2, i32* %arrayidx2, align 4, !llvm.access.group !16
-  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
-  %exitcond = icmp eq i32 %lftr.wideiv, 512
-  br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !6
-
-for.end:                                          ; preds = %for.body
-  ret void
-}
-
-!3 = !{!3, !{!"llvm.loop.parallel_accesses", !13, !15}}
-!4 = !{!4, !{!"llvm.loop.parallel_accesses", !14, !15}}
-!6 = !{!6, !{!"llvm.loop.parallel_accesses", !16}}
-!7 = !{!7, !{!"llvm.loop.parallel_accesses", !17}}
-!13 = distinct !{}
-!14 = distinct !{}
-!15 = distinct !{}
-!16 = distinct !{}
-!17 = distinct !{}