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, 194 deletions

diff --git a/llvm/test/Transforms/LoopSimplifyCFG/lcssa.ll b/llvm/test/Transforms/LoopSimplifyCFG/lcssa.ll
deleted file mode 100644
index 4673628181e..00000000000
--- a/llvm/test/Transforms/LoopSimplifyCFG/lcssa.ll
+++ /dev/null
@@ -1,194 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -loop-simplifycfg -verify-loop-info -verify-dom-info -verify-loop-lcssa < %s | FileCheck %s
-; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -passes='require<domtree>,loop(simplify-cfg)' -verify-loop-info -verify-dom-info -verify-loop-lcssa < %s | FileCheck %s
-; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -loop-simplifycfg -enable-mssa-loop-dependency=true -verify-memoryssa -verify-loop-info -verify-dom-info -verify-loop-lcssa < %s | FileCheck %s
-
-target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
-
-define void @c() {
-; CHECK-LABEL: @c(
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br label [[D:%.*]]
-; CHECK:       d.loopexit:
-; CHECK-NEXT:    [[DOTLCSSA:%.*]] = phi i32 [ [[TMP1:%.*]], [[FOR_COND:%.*]] ]
-; CHECK-NEXT:    br label [[D]]
-; CHECK:       d:
-; CHECK-NEXT:    [[TMP0:%.*]] = phi i32 [ undef, [[ENTRY:%.*]] ], [ [[DOTLCSSA]], [[D_LOOPEXIT:%.*]] ]
-; CHECK-NEXT:    br label [[FOR_COND]]
-; CHECK:       for.cond:
-; CHECK-NEXT:    [[TMP1]] = phi i32 [ [[TMP0]], [[D]] ], [ 0, [[IF_END:%.*]] ]
-; CHECK-NEXT:    [[TOBOOL2:%.*]] = icmp eq i32 [[TMP1]], 0
-; CHECK-NEXT:    br i1 [[TOBOOL2]], label [[IF_END]], label [[D_LOOPEXIT]]
-; CHECK:       if.end:
-; CHECK-NEXT:    br label [[FOR_COND]]
-;
-entry:
-  br label %d
-
-d.loopexit:                                       ; preds = %if.end.7, %for.body
-  %.lcssa = phi i32 [ %1, %for.body ], [ 0, %if.end.7 ]
-  br label %d
-
-d:                                                ; preds = %d.loopexit, %entry
-  %0 = phi i32 [ undef, %entry ], [ %.lcssa, %d.loopexit ]
-  br label %for.cond
-
-for.cond:                                         ; preds = %if.end.8, %d
-  %1 = phi i32 [ %0, %d ], [ 0, %if.end.8 ]
-  br label %for.body
-
-for.body:                                         ; preds = %for.cond
-  %tobool2 = icmp eq i32 %1, 0
-  br i1 %tobool2, label %if.end, label %d.loopexit
-
-if.end:                                           ; preds = %for.body
-  br label %if.end.7
-
-if.end.7:                                         ; preds = %if.end
-  br i1 true, label %if.end.8, label %d.loopexit
-
-if.end.8:                                         ; preds = %if.end.7
-  br label %for.cond
-}
-
-define void @test_01() {
-; CHECK-LABEL: @test_01(
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br label [[FOR_COND:%.*]]
-; CHECK:       for.cond.loopexit:
-; CHECK-NEXT:    br label [[FOR_COND]]
-; CHECK:       for.cond:
-; CHECK-NEXT:    [[INC41_LCSSA3:%.*]] = phi i16 [ undef, [[FOR_COND_LOOPEXIT:%.*]] ], [ undef, [[ENTRY:%.*]] ]
-; CHECK-NEXT:    switch i32 0, label [[FOR_COND_SPLIT:%.*]] [
-; CHECK-NEXT:    i32 1, label [[FOR_COND_LOOPEXIT]]
-; CHECK-NEXT:    ]
-; CHECK:       for.cond.split:
-; CHECK-NEXT:    [[INC41_LCSSA3_LCSSA:%.*]] = phi i16 [ [[INC41_LCSSA3]], [[FOR_COND]] ]
-; CHECK-NEXT:    br label [[WHILE_COND:%.*]]
-; CHECK:       while.cond:
-; CHECK-NEXT:    [[INC41:%.*]] = phi i16 [ [[INC4:%.*]], [[WHILE_COND]] ], [ [[INC41_LCSSA3_LCSSA]], [[FOR_COND_SPLIT]] ]
-; CHECK-NEXT:    [[INC4]] = add nsw i16 [[INC41]], 1
-; CHECK-NEXT:    br label [[WHILE_COND]]
-;
-entry:
-  br label %for.cond
-
-for.cond.loopexit:                                ; preds = %while.cond
-  %inc41.lcssa = phi i16 [ %inc41, %while.cond ]
-  br label %for.cond
-
-for.cond:                                         ; preds = %for.cond.loopexit, %entry
-  %inc41.lcssa3 = phi i16 [ %inc41.lcssa, %for.cond.loopexit ], [ undef, %entry ]
-  br label %while.cond
-
-while.cond:                                       ; preds = %while.body, %for.cond
-  %inc41 = phi i16 [ %inc4, %while.body ], [ %inc41.lcssa3, %for.cond ]
-  br i1 true, label %while.body, label %for.cond.loopexit
-
-while.body:                                       ; preds = %while.cond
-  %inc4 = add nsw i16 %inc41, 1
-  br label %while.cond
-}
-
-define void @bar() {
-; CHECK-LABEL: @bar(
-; CHECK-NEXT:  bb:
-; CHECK-NEXT:    switch i32 0, label [[BB_SPLIT:%.*]] [
-; CHECK-NEXT:    i32 1, label [[BB10:%.*]]
-; CHECK-NEXT:    ]
-; CHECK:       bb.split:
-; CHECK-NEXT:    br label [[BB1:%.*]]
-; CHECK:       bb1:
-; CHECK-NEXT:    [[TMP:%.*]] = phi i32 [ [[TMP7:%.*]], [[BB6:%.*]] ], [ undef, [[BB_SPLIT]] ]
-; CHECK-NEXT:    switch i32 undef, label [[BB5:%.*]] [
-; CHECK-NEXT:    i32 0, label [[BB6]]
-; CHECK-NEXT:    i32 1, label [[BB8:%.*]]
-; CHECK-NEXT:    ]
-; CHECK:       bb5:
-; CHECK-NEXT:    ret void
-; CHECK:       bb6:
-; CHECK-NEXT:    [[TMP7]] = add i32 undef, 123
-; CHECK-NEXT:    br label [[BB1]]
-; CHECK:       bb8:
-; CHECK-NEXT:    [[TMP9:%.*]] = phi i32 [ [[TMP]], [[BB1]] ]
-; CHECK-NEXT:    [[USE:%.*]] = add i32 [[TMP9]], 1
-; CHECK-NEXT:    ret void
-; CHECK:       bb10:
-; CHECK-NEXT:    ret void
-;
-
-bb:
-  br label %bb1
-
-bb1:                                              ; preds = %bb6, %bb
-  %tmp = phi i32 [ %tmp7, %bb6 ], [ undef, %bb ]
-  br i1 false, label %bb2, label %bb4
-
-bb2:                                              ; preds = %bb1
-  switch i32 undef, label %bb10 [
-  i32 0, label %bb3
-  i32 1, label %bb8
-  ]
-
-bb3:                                              ; preds = %bb2
-  br label %bb6
-
-bb4:                                              ; preds = %bb1
-  switch i32 undef, label %bb5 [
-  i32 0, label %bb6
-  i32 1, label %bb8
-  ]
-
-bb5:                                              ; preds = %bb4
-  ret void
-
-bb6:                                              ; preds = %bb4, %bb3
-  %tmp7 = add i32 undef, 123
-  br label %bb1
-
-bb8:                                              ; preds = %bb4, %bb2
-  %tmp9 = phi i32 [ %tmp, %bb2 ], [ %tmp, %bb4 ]
-  %use = add i32 %tmp9, 1
-  ret void
-
-bb10:                                             ; preds = %bb2
-  ret void
-}
-
-define void @memlcssa() {
-; CHECK-LABEL: @memlcssa(
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    switch i32 0, label [[ENTRY_SPLIT:%.*]] [
-; CHECK-NEXT:    i32 1, label [[DEFAULT_BB:%.*]]
-; CHECK-NEXT:    ]
-; CHECK:       entry.split:
-; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
-; CHECK:       for.body:
-; CHECK-NEXT:    call void @foo()
-; CHECK-NEXT:    br label [[FOR_BODY]]
-; CHECK:       default.bb:
-; CHECK-NEXT:    unreachable
-;
-entry:
-  br label %for.body
-
-for.body:                                         ; preds = %exit, %entry
-  br label %switch.bb
-
-switch.bb:                                        ; preds = %for.body
-  switch i2 1, label %default.bb [
-  i2 1, label %case.bb
-  ]
-
-case.bb:                                          ; preds = %switch
-  br label %exit
-
-default.bb:                                       ; preds = %switch
-  unreachable
-
-exit:                                             ; preds = %case.bb
-  call void @foo()
-  br label %for.body
-}
-
-declare void @foo()