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, 141 deletions

diff --git a/llvm/test/Transforms/InstCombine/debuginfo-dce.ll b/llvm/test/Transforms/InstCombine/debuginfo-dce.ll
deleted file mode 100644
index 200ea26cdaf..00000000000
--- a/llvm/test/Transforms/InstCombine/debuginfo-dce.ll
+++ /dev/null
@@ -1,141 +0,0 @@
-; RUN: opt -instcombine %s -S -o - | FileCheck %s
-; Verify that the eliminated instructions (bitcast, gep, load) are salvaged into
-; a DIExpression.
-;
-; Originally created from the following C source and then heavily isolated/reduced.
-;
-; struct entry {
-;   struct entry *next;
-; };
-; void scan(struct entry *queue, struct entry *end)
-; {
-;   struct entry *entry;
-;   for (entry = (struct entry *)((char *)(queue->next) - 8);
-;        &entry->next == end;
-;        entry = (struct entry *)((char *)(entry->next) - 8)) {
-;   }
-; }
-
-; ModuleID = '<stdin>'
-source_filename = "test.c"
-target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-apple-macosx10.12.0"
-
-%struct.entry = type { %struct.entry* }
-
-; This salvage can't currently occur safely (PR40628), however if/when that's
-; ever fixed, then this is definitely a piece of test coverage that should
-; be maintained.
-define void @salvage_load(%struct.entry** %queue) local_unnamed_addr #0 !dbg !14 {
-entry:
-  %im_not_dead = alloca %struct.entry*
-  %0 = load %struct.entry*, %struct.entry** %queue, align 8, !dbg !19
-  %1 = load %struct.entry*, %struct.entry** %queue, align 8, !dbg !19
-  call void @llvm.dbg.value(metadata %struct.entry* %1, metadata !18, metadata !20), !dbg !19
-; CHECK: define void @salvage_load
-; CHECK-NEXT: entry:
-; CHECK-NOT: dbg.value
-  store %struct.entry* %1, %struct.entry** %im_not_dead, align 8
-  ret void, !dbg !21
-}
-
-define void @salvage_bitcast(%struct.entry* %queue) local_unnamed_addr #0 !dbg !22 {
-entry:
-  %im_not_dead = alloca i8*
-  %0 = bitcast %struct.entry* %queue to i8*, !dbg !23
-  %1 = bitcast %struct.entry* %queue to i8*, !dbg !23
-  call void @llvm.dbg.value(metadata i8* %1, metadata !24, metadata !20), !dbg !23
-; CHECK: define void @salvage_bitcast
-; CHECK-NEXT: entry:
-; CHECK-NEXT: call void @llvm.dbg.value(metadata %struct.entry* %queue,
-; CHECK-SAME:                           metadata !DIExpression(DW_OP_plus_uconst, 0))
-  store i8* %1, i8** %im_not_dead, align 8
-  ret void, !dbg !23
-}
-
-define void @salvage_gep0(%struct.entry* %queue, %struct.entry* %end) local_unnamed_addr #0 !dbg !25 {
-entry:
-  %im_not_dead = alloca %struct.entry**
-  %0 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !26
-  %1 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !26
-  call void @llvm.dbg.value(metadata %struct.entry** %1, metadata !27, metadata !20), !dbg !26
-; CHECK: define void @salvage_gep0
-; CHECK-NEXT: entry:
-; CHECK-NEXT: call void @llvm.dbg.value(metadata %struct.entry* %queue,
-; CHECK-SAME:                           metadata !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_plus_uconst, 0, DW_OP_stack_value))
-  store %struct.entry** %1, %struct.entry*** %im_not_dead, align 8
-  ret void, !dbg !26
-}
-
-define void @salvage_gep1(%struct.entry* %queue, %struct.entry* %end) local_unnamed_addr #0 !dbg !28 {
-entry:
-  %im_not_dead = alloca %struct.entry**
-  %0 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !29
-  %1 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !29
-  call void @llvm.dbg.value(metadata %struct.entry** %1, metadata !30, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !29
-; CHECK: define void @salvage_gep1
-; CHECK-NEXT: entry:
-; CHECK-NEXT: call void @llvm.dbg.value(metadata %struct.entry* %queue,
-; CHECK-SAME:     metadata !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_stack_value, DW_OP_LLVM_fragment, 0, 32))
-  store %struct.entry** %1, %struct.entry*** %im_not_dead, align 8
-  ret void, !dbg !29
-}
-
-define void @salvage_gep2(%struct.entry* %queue, %struct.entry* %end) local_unnamed_addr #0 !dbg !31 {
-entry:
-  %im_not_dead = alloca %struct.entry**
-  %0 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !32
-  %1 = getelementptr inbounds %struct.entry, %struct.entry* %queue, i32 -1, i32 0, !dbg !32
-  call void @llvm.dbg.value(metadata %struct.entry** %1, metadata !33, metadata !DIExpression(DW_OP_stack_value)), !dbg !32
-; CHECK: define void @salvage_gep2
-; CHECK-NEXT: entry:
-; CHECK-NEXT: call void @llvm.dbg.value(metadata %struct.entry* %queue,
-; CHECK-SAME:     metadata !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_stack_value))
-  store %struct.entry** %1, %struct.entry*** %im_not_dead, align 8
-  ret void, !dbg !32
-}
-
-; Function Attrs: nounwind readnone
-declare void @llvm.dbg.value(metadata, metadata, metadata) #1
-
-attributes #0 = { nounwind ssp uwtable }
-attributes #1 = { nounwind readnone }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!10, !11, !12}
-!llvm.ident = !{!13}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 297628) (llvm/trunk 297643)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
-!1 = !DIFile(filename: "test.c", directory: "/")
-!2 = !{}
-!3 = !{!4, !8}
-!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
-!5 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "entry", file: !1, line: 1, size: 64, elements: !6)
-!6 = !{!7}
-!7 = !DIDerivedType(tag: DW_TAG_member, name: "next", scope: !5, file: !1, line: 2, baseType: !4, size: 64)
-!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
-!9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 2, !"Debug Info Version", i32 3}
-!12 = !{i32 1, !"PIC Level", i32 2}
-!13 = !{!"clang version 5.0.0 (trunk 297628) (llvm/trunk 297643)"}
-!14 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
-!15 = !DISubroutineType(types: !16)
-!16 = !{null, !4, !4}
-!17 = !{!18}
-!18 = !DILocalVariable(name: "entry", scope: !14, file: !1, line: 6, type: !4)
-!19 = !DILocation(line: 6, column: 17, scope: !14)
-!20 = !DIExpression(DW_OP_plus_uconst, 0)
-!21 = !DILocation(line: 11, column: 1, scope: !14)
-!22 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
-!23 = !DILocation(line: 6, column: 17, scope: !22)
-!24 = !DILocalVariable(name: "entry", scope: !22, file: !1, line: 6, type: !4)
-!25 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
-!26 = !DILocation(line: 6, column: 17, scope: !25)
-!27 = !DILocalVariable(name: "entry", scope: !25, file: !1, line: 6, type: !4)
-!28 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
-!29 = !DILocation(line: 6, column: 17, scope: !28)
-!30 = !DILocalVariable(name: "entry", scope: !28, file: !1, line: 6, type: !4)
-!31 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
-!32 = !DILocation(line: 6, column: 17, scope: !31)
-!33 = !DILocalVariable(name: "entry", scope: !31, file: !1, line: 6, type: !4)