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, 44 deletions

diff --git a/llvm/test/Transforms/LoopSimplify/single-backedge.ll b/llvm/test/Transforms/LoopSimplify/single-backedge.ll
deleted file mode 100644
index 7739b33d0de..00000000000
--- a/llvm/test/Transforms/LoopSimplify/single-backedge.ll
+++ /dev/null
@@ -1,44 +0,0 @@
-; The loop canonicalization pass should guarantee that there is one backedge
-; for all loops.  This allows the -indvars pass to recognize the %IV
-; induction variable in this testcase.
-
-; RUN: opt < %s -indvars -S | FileCheck %s
-; CHECK: Loop.backedge:
-; CHECK-NOT: br
-; CHECK: br label %Loop, !dbg [[BACKEDGE_LOC:![0-9]+]]
-
-; CHECK: [[BACKEDGE_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}})
-
-define i32 @test(i1 %C) {
-; <label>:0
-  br label %Loop, !dbg !6
-Loop: ; preds = %BE2, %BE1, %0
-  %IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2]
-  store i32 %IV, i32* null, !dbg !7
-  %IV2 = add i32 %IV, 2, !dbg !8 ; <i32> [#uses=2]
-  br i1 %C, label %BE1, label %BE2, !dbg !9
-BE1:  ; preds = %Loop
-  br label %Loop, !dbg !10
-BE2:    ; preds = %n br label %Loop
-  br label %Loop, !dbg !11
-}
-
-!llvm.module.flags = !{!0, !1}
-!llvm.dbg.cu = !{!12}
-!0 = !{i32 2, !"Dwarf Version", i32 4}
-!1 = !{i32 2, !"Debug Info Version", i32 3}
-
-!2 = !{}
-!3 = !DISubroutineType(types: !2)
-!4 = !DIFile(filename: "atomic.cpp", directory: "/tmp")
-!5 = distinct !DISubprogram(name: "test", scope: !4, file: !4, line: 99, type: !3, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !12, retainedNodes: !2)
-!6 = !DILocation(line: 100, column: 1, scope: !5)
-!7 = !DILocation(line: 101, column: 1, scope: !5)
-!8 = !DILocation(line: 102, column: 1, scope: !5)
-!9 = !DILocation(line: 103, column: 1, scope: !5)
-!10 = !DILocation(line: 104, column: 1, scope: !5)
-!11 = !DILocation(line: 105, column: 1, scope: !5)
-!12 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
-                             file: !4,
-                             isOptimized: true, flags: "-O2",
-                             splitDebugFilename: "abc.debug", emissionKind: 2)