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, 42 deletions

diff --git a/llvm/test/Transforms/SimpleLoopUnswitch/trivial-unswitch-iteration.ll b/llvm/test/Transforms/SimpleLoopUnswitch/trivial-unswitch-iteration.ll
deleted file mode 100644
index 18b39ca8082..00000000000
--- a/llvm/test/Transforms/SimpleLoopUnswitch/trivial-unswitch-iteration.ll
+++ /dev/null
@@ -1,42 +0,0 @@
-; RUN: opt -passes='loop(loop-instsimplify,simplify-cfg,unswitch),verify<loops>' -S < %s | FileCheck %s
-; RUN: opt -enable-mssa-loop-dependency=true -verify-memoryssa -passes='loop(loop-instsimplify,simplify-cfg,unswitch),verify<loops>' -S < %s | FileCheck %s
-
-declare void @some_func() noreturn
-
-define i32 @test1(i32* %var, i1 %cond1, i1 %cond2) {
-; CHECK-LABEL: @test1(
-entry:
-  br label %loop_begin
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br i1 %{{.*}}, label %entry.split, label %loop_exit.split
-;
-; CHECK:       entry.split:
-; CHECK-NEXT:    br i1 %{{.*}}, label %entry.split.split, label %loop_exit
-;
-; CHECK:       entry.split.split:
-; CHECK-NEXT:    br label %loop_begin
-
-loop_begin:
-  br i1 %cond1, label %continue, label %loop_exit ; first trivial condition
-
-continue:
-  %var_val = load i32, i32* %var
-  %var_cond = trunc i32 %var_val to i1
-  %maybe_cond = select i1 %cond1, i1 %cond2, i1 %var_cond
-  br i1 %maybe_cond, label %do_something, label %loop_exit ; second trivial condition
-
-do_something:
-  call void @some_func() noreturn nounwind
-  br label %loop_begin
-; CHECK:       loop_begin:
-; CHECK-NEXT:    call
-; CHECK-NEXT:    br label %loop_begin
-
-loop_exit:
-  ret i32 0
-; CHECK:       loop_exit:
-; CHECK-NEXT:    br label %loop_exit.split
-;
-; CHECK:       loop_exit.split:
-; CHECK-NEXT:    ret
-}