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, 247 deletions

diff --git a/llvm/test/Transforms/LoopUnroll/ARM/loop-unrolling.ll b/llvm/test/Transforms/LoopUnroll/ARM/loop-unrolling.ll
deleted file mode 100644
index bb5277bedc0..00000000000
--- a/llvm/test/Transforms/LoopUnroll/ARM/loop-unrolling.ll
+++ /dev/null
@@ -1,247 +0,0 @@
-; RUN: opt -mtriple=armv7 -mcpu=cortex-a57 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-A
-; RUN: opt -mtriple=thumbv7 -mcpu=cortex-a57 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-A
-; RUN: opt -mtriple=thumbv7 -mcpu=cortex-a72 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-A
-; RUN: opt -mtriple=thumbv8m -mcpu=cortex-m23 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-T1
-; RUN: opt -mtriple=thumbv8m.main -mcpu=cortex-m33 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-T2
-; RUN: opt -mtriple=thumbv7em -mcpu=cortex-m7 -loop-unroll -S %s -o - | FileCheck %s --check-prefix=CHECK-UNROLL-T2
-
-; CHECK-LABEL: partial
-define arm_aapcs_vfpcc void @partial(i32* nocapture %C, i32* nocapture readonly %A, i32* nocapture readonly %B) local_unnamed_addr #0 {
-entry:
-  br label %for.body
-
-; CHECK-LABEL: for.body
-for.body:
-
-; CHECK-UNROLL-A: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV2:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-A: [[IV1:%[a-z.0-9]+]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-A: [[IV2]] = add nuw nsw i32 [[IV1]], 1
-; CHECK-UNROLL-A: [[CMP:%[a-z.0-9]+]] = icmp eq i32 [[IV2]], 1024
-; CHECK-UNROLL-A: br i1 [[CMP]], label [[END:%[a-z.]+]], label %for.body
-
-; CHECK-UNROLL-T1: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV1:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-T1: [[IV1]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T1: [[CMP:%[a-z.0-9]+]] = icmp eq i32 [[IV1]], 1024
-; CHECK-UNROLL-T1: br i1 [[CMP]], label [[END:%[a-z.]+]], label %for.body
-
-; CHECK-UNROLL-T2: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV16:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-T2: [[IV1:%[a-z.0-9]+]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T2: [[IV2:%[a-z.0-9]+]] = add nuw nsw i32 [[IV1]], 1
-; CHECK-UNROLL-T2: [[IV3:%[a-z.0-9]+]] = add nuw nsw i32 [[IV2]], 1
-; CHECK-UNROLL-T2: [[IV4:%[a-z.0-9]+]] = add nuw nsw i32 [[IV3]], 1
-; CHECK-UNROLL-T2: [[IV5:%[a-z.0-9]+]] = add nuw nsw i32 [[IV4]], 1
-; CHECK-UNROLL-T2: [[IV6:%[a-z.0-9]+]] = add nuw nsw i32 [[IV5]], 1
-; CHECK-UNROLL-T2: [[IV7:%[a-z.0-9]+]] = add nuw nsw i32 [[IV6]], 1
-; CHECK-UNROLL-T2: [[IV8:%[a-z.0-9]+]] = add nuw nsw i32 [[IV7]], 1
-; CHECK-UNROLL-T2: [[IV9:%[a-z.0-9]+]] = add nuw nsw i32 [[IV8]], 1
-; CHECK-UNROLL-T2: [[IV10:%[a-z.0-9]+]] = add nuw nsw i32 [[IV9]], 1
-; CHECK-UNROLL-T2: [[IV11:%[a-z.0-9]+]] = add nuw nsw i32 [[IV10]], 1
-; CHECK-UNROLL-T2: [[IV12:%[a-z.0-9]+]] = add nuw nsw i32 [[IV11]], 1
-; CHECK-UNROLL-T2: [[IV13:%[a-z.0-9]+]] = add nuw nsw i32 [[IV12]], 1
-; CHECK-UNROLL-T2: [[IV14:%[a-z.0-9]+]] = add nuw nsw i32 [[IV13]], 1
-; CHECK-UNROLL-T2: [[IV15:%[a-z.0-9]+]] = add nuw nsw i32 [[IV14]], 1
-; CHECK-UNROLL-T2: [[IV16]] = add nuw nsw i32 [[IV15]], 1
-; CHECK-UNROLL-T2: [[CMP:%[a-z.0-9]+]] = icmp eq i32 [[IV16]], 1024
-; CHECK-UNROLL-T2: br i1 [[CMP]], label [[END:%[a-z.]+]], label %for.body
-
-  %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.08
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx1 = getelementptr inbounds i32, i32* %B, i32 %i.08
-  %1 = load i32, i32* %arrayidx1, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx2 = getelementptr inbounds i32, i32* %C, i32 %i.08
-  store i32 %mul, i32* %arrayidx2, align 4
-  %inc = add nuw nsw i32 %i.08, 1
-  %exitcond = icmp eq i32 %inc, 1024
-  br i1 %exitcond, label %for.cond.cleanup, label %for.body
-
-for.cond.cleanup:
-  ret void
-}
-
-; CHECK-LABEL: runtime
-define arm_aapcs_vfpcc void @runtime(i32* nocapture %C, i32* nocapture readonly %A, i32* nocapture readonly %B, i32 %N) local_unnamed_addr #0 {
-entry:
-  %cmp8 = icmp eq i32 %N, 0
-  br i1 %cmp8, label %for.cond.cleanup, label %for.body
-
-; CHECK-LABEL: for.body
-for.body:
-; CHECK-UNROLL-A: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, [[PRE:%[a-z.0-9]+]] ], [ [[IV2:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-A: [[IV1:%[a-z.0-9]+]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-A: [[IV2]] = add nuw i32 [[IV1]], 1
-; CHECK-UNROLL-A: br
-
-; CHECK-UNROLL-T1: %i.09 = phi i32 [ %inc, %for.body ], [ 0
-; CHECK-UNROLL-T1: %inc = add nuw i32 %i.09, 1
-; CHECK-UNROLL-T1: %exitcond = icmp eq i32 %inc, %N
-; CHECK-UNROLL-T1: br
-
-; CHECK-UNROLL-T2: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, [[PRE:%[a-z.0-9]+]] ], [ [[IV4:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-T2: [[IV1:%[a-z.0-9]+]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T2: [[IV2:%[a-z.0-9]+]] = add nuw nsw i32 [[IV1]], 1
-; CHECK-UNROLL-T2: [[IV3:%[a-z.0-9]+]] = add nuw nsw i32 [[IV2]], 1
-; CHECK-UNROLL-T2: [[IV4]] = add nuw i32 [[IV3]], 1
-; CHECK-UNROLL-T2: br
-
-; CHECK-UNROLL-T2: for.body.epil:
-; CHECK-UNROLL-T2: for.body.epil.1:
-; CHECK-UNROLL-T2: for.body.epil.2:
-
-  %i.09 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
-  %arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.09
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx1 = getelementptr inbounds i32, i32* %B, i32 %i.09
-  %1 = load i32, i32* %arrayidx1, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx2 = getelementptr inbounds i32, i32* %C, i32 %i.09
-  store i32 %mul, i32* %arrayidx2, align 4
-  %inc = add nuw i32 %i.09, 1
-  %exitcond = icmp eq i32 %inc, %N
-  br i1 %exitcond, label %for.cond.cleanup, label %for.body
-
-for.cond.cleanup:
-  ret void
-}
-
-; CHECK-LABEL: nested_runtime
-define arm_aapcs_vfpcc void @nested_runtime(i32* nocapture %C, i16* nocapture readonly %A, i16* nocapture readonly %B, i32 %N) local_unnamed_addr #0 {
-entry:
-  %cmp25 = icmp eq i32 %N, 0
-  br i1 %cmp25, label %for.cond.cleanup, label %for.body4.lr.ph
-
-for.body4.lr.ph:
-  %h.026 = phi i32 [ %inc11, %for.cond.cleanup3 ], [ 0, %entry ]
-  %mul = mul i32 %h.026, %N
-  br label %for.body4
-
-for.cond.cleanup:
-  ret void
-
-for.cond.cleanup3:
-  %inc11 = add nuw i32 %h.026, 1
-  %exitcond27 = icmp eq i32 %inc11, %N
-  br i1 %exitcond27, label %for.cond.cleanup, label %for.body4.lr.ph
-
-; CHECK-LABEL: for.body4
-for.body4:
-; CHECK-UNROLL-T1: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, [[PRE:%[a-z0-9.]+]] ], [ [[IV1:%[a-z.0-9]+]], %for.body4 ]
-; CHECK-UNROLL-T1: [[IV1]] = add nuw i32 [[IV0]], 1
-; CHECK-UNROLL-T1: br
-
-; CHECK-UNROLL-T2: for.body4.epil:
-; CHECK-UNROLL-T2: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, [[PRE:%[a-z0-9.]+]] ], [ [[IV4:%[a-z.0-9]+]], %for.body4 ]
-; CHECK-UNROLL-T2: [[IV1:%[a-z.0-9]+]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T2: [[IV2:%[a-z.0-9]+]] = add nuw nsw i32 [[IV1]], 1
-; CHECK-UNROLL-T2: [[IV3:%[a-z.0-9]+]] = add nuw nsw i32 [[IV2]], 1
-; CHECK-UNROLL-T2: [[IV4]] = add nuw i32 [[IV3]], 1
-; CHECK-UNROLL-T2: br
-; CHECK-UNROLL-T2: for.body4.epil.1:
-; CHECK-UNROLL-T2: for.body4.epil.2:
-
-  %w.024 = phi i32 [ 0, %for.body4.lr.ph ], [ %inc, %for.body4 ]
-  %add = add i32 %w.024, %mul
-  %arrayidx = getelementptr inbounds i16, i16* %A, i32 %add
-  %0 = load i16, i16* %arrayidx, align 2
-  %conv = sext i16 %0 to i32
-  %arrayidx5 = getelementptr inbounds i16, i16* %B, i32 %w.024
-  %1 = load i16, i16* %arrayidx5, align 2
-  %conv6 = sext i16 %1 to i32
-  %mul7 = mul nsw i32 %conv6, %conv
-  %arrayidx8 = getelementptr inbounds i32, i32* %C, i32 %w.024
-  %2 = load i32, i32* %arrayidx8, align 4
-  %add9 = add nsw i32 %mul7, %2
-  store i32 %add9, i32* %arrayidx8, align 4
-  %inc = add nuw i32 %w.024, 1
-  %exitcond = icmp eq i32 %inc, %N
-  br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
-}
-
-; CHECK-LABEL: loop_call
-define arm_aapcs_vfpcc void @loop_call(i32* nocapture %C, i32* nocapture readonly %A, i32* nocapture readonly %B) local_unnamed_addr #1 {
-entry:
-  br label %for.body
-
-for.cond.cleanup:
-  ret void
-
-; CHECK-LABEL: for.body
-for.body:
-; CHECK-UNROLL-A: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV1:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-A: [[IV1]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-A: icmp eq i32 [[IV1]], 1024
-; CHECK-UNROLL-A: br
-
-; CHECK-UNROLL-T1: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV1:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-T1: [[IV1]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T1: icmp eq i32 [[IV1]], 1024
-; CHECK-UNROLL-T1: br
-
-; CHECK-UNROLL-T2: [[IV0:%[a-z.0-9]+]] = phi i32 [ 0, %entry ], [ [[IV1:%[a-z.0-9]+]], %for.body ]
-; CHECK-UNROLL-T2: [[IV1]] = add nuw nsw i32 [[IV0]], 1
-; CHECK-UNROLL-T2: icmp eq i32 [[IV1]], 1024
-; CHECK-UNROLL-T2: br
-
-  %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
-  %arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.08
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx1 = getelementptr inbounds i32, i32* %B, i32 %i.08
-  %1 = load i32, i32* %arrayidx1, align 4
-  %call = tail call arm_aapcs_vfpcc i32 @some_func(i32 %0, i32 %1) #3
-  %arrayidx2 = getelementptr inbounds i32, i32* %C, i32 %i.08
-  store i32 %call, i32* %arrayidx2, align 4
-  %inc = add nuw nsw i32 %i.08, 1
-  %exitcond = icmp eq i32 %inc, 1024
-  br i1 %exitcond, label %for.cond.cleanup, label %for.body
-}
-
-; CHECK-LABEL: iterate_inc
-; CHECK-UNROLL-A: %n.addr.04 = phi %struct.Node* [ %1, %while.body ], [ %n, %while.body.preheader ]
-; CHECK-UNROLL-A: %tobool = icmp eq %struct.Node* %1, null
-; CHECK-UNROLL-A: br i1 %tobool
-; CHECK-UNROLL-A-NOT: load
-
-; CHECK-UNROLL-T1: %n.addr.04 = phi %struct.Node* [ %1, %while.body ], [ %n, %while.body.preheader ]
-; CHECK-UNROLL-T1: %tobool = icmp eq %struct.Node* %1, null
-; CHECK-UNROLL-T1: br i1 %tobool
-; CHECK-UNROLL-T1-NOT: load
-
-; CHECK-UNROLL-T2: [[CMP0:%[a-z.0-9]+]] = icmp eq %struct.Node* [[VAR0:%[a-z.0-9]+]], null
-; CHECK-UNROLL-T2: br i1 [[CMP0]], label [[END:%[a-z.0-9]+]]
-; CHECK-UNROLL-T2: [[CMP1:%[a-z.0-9]+]] = icmp eq %struct.Node* [[VAR1:%[a-z.0-9]+]], null
-; CHECK-UNROLL-T2: br i1 [[CMP1]], label [[END]]
-; CHECK-UNROLL-T2: [[CMP2:%[a-z.0-9]+]] = icmp eq %struct.Node* [[VAR2:%[a-z.0-9]+]], null
-; CHECK-UNROLL-T2: br i1 [[CMP2]], label [[END]]
-; CHECK-UNROLL-T2: [[CMP3:%[a-z.0-9]+]] = icmp eq %struct.Node* [[VAR3:%[a-z.0-9]+]], null
-; CHECK-UNROLL-T2: br i1 [[CMP3]], label [[END]]
-; CHECK-UNROLL-T2: [[CMP4:%[a-z.0-9]+]] = icmp eq %struct.Node* [[VAR4:%[a-z.0-9]+]], null
-; CHECK-UNROLL-T2: br i1 [[CMP4]], label [[END]]
-; CHECK-UNROLL-T2-NOT: load
-
-%struct.Node = type { %struct.Node*, i32 }
-
-define arm_aapcscc void @iterate_inc(%struct.Node* %n) local_unnamed_addr #0 {
-entry:
-  %tobool3 = icmp eq %struct.Node* %n, null
-  br i1 %tobool3, label %while.end, label %while.body.preheader
-
-while.body.preheader:
-  br label %while.body
-
-while.body:
-  %n.addr.04 = phi %struct.Node* [ %1, %while.body ], [ %n, %while.body.preheader ]
-  %val = getelementptr inbounds %struct.Node, %struct.Node* %n.addr.04, i32 0, i32 1
-  %0 = load i32, i32* %val, align 4
-  %add = add nsw i32 %0, 1
-  store i32 %add, i32* %val, align 4
-  %next = getelementptr inbounds %struct.Node, %struct.Node* %n.addr.04, i32 0, i32 0
-  %1 = load %struct.Node*, %struct.Node** %next, align 4
-  %tobool = icmp eq %struct.Node* %1, null
-  br i1 %tobool, label %while.end, label %while.body
-
-while.end:
-  ret void
-}
-
-declare arm_aapcs_vfpcc i32 @some_func(i32, i32) local_unnamed_addr #2