test/Transforms/LoopVectorize/X86/vectorization-remarks-missed.ll - llvm - Git at Google

 ; RUN: opt < %s -loop-vectorize -transform-warning -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
 ; RUN: opt < %s -loop-vectorize -transform-warning -o /dev/null -pass-remarks-output=%t.yaml
 ; RUN: cat %t.yaml | FileCheck -check-prefix=YAML %s

 ; RUN: opt < %s -passes=loop-vectorize,transform-warning -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize'  2>&1 | FileCheck %s
 ; RUN: opt < %s -passes=loop-vectorize,transform-warning -o /dev/null -pass-remarks-output=%t.yaml
 ; RUN: cat %t.yaml | FileCheck -check-prefix=YAML %s

 ; C/C++ code for tests
 ; void test(int *A, int Length) {
 ; #pragma clang loop vectorize(enable) interleave(enable)
 ;   for (int i = 0; i < Length; i++) {
 ;     A[i] = i;
 ;     if (A[i] > Length)
 ;       break;
 ;   }
 ; }
 ; File, line, and column should match those specified in the metadata
 ; CHECK: remark: source.cpp:4:5: loop not vectorized: could not determine number of loop iterations
 ; CHECK: remark: source.cpp:4:5: loop not vectorized

 ; void test_disabled(int *A, int Length) {
 ; #pragma clang loop vectorize(disable) interleave(disable)
 ;   for (int i = 0; i < Length; i++)
 ;     A[i] = i;
 ; }
 ; CHECK: remark: source.cpp:13:5: loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized

 ; void test_array_bounds(int *A, int *B, int Length) {
 ; #pragma clang loop vectorize(enable)
 ;   for (int i = 0; i < Length; i++)
 ;     A[i] = A[B[i]];
 ; }
 ; CHECK: remark: source.cpp:19:5: loop not vectorized: cannot identify array bounds
 ; CHECK: remark: source.cpp:19:5: loop not vectorized
 ; CHECK: warning: source.cpp:19:5: loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering

 ; int foo();
 ; void test_multiple_failures(int *A) {
 ;   int k = 0;
 ; #pragma clang loop vectorize(enable) interleave(enable)
 ;   for (int i = 0; i < 1000; i+=A[i]) {
 ;     if (A[i])
 ;       k = foo();
 ;   }
 ;   return k;
 ; }
 ; CHECK: remark: source.cpp:29:7: loop not vectorized: control flow cannot be substituted for a select
 ; CHECK: remark: source.cpp:27:3: loop not vectorized

 ; YAML:       --- !Analysis
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            CantComputeNumberOfIterations
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 4, Column: 5 }
 ; YAML-NEXT: Function:        _Z4testPii
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: '
 ; YAML-NEXT:   - String:          could not determine number of loop iterations
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Missed
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            MissedDetails
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 4, Column: 5 }
 ; YAML-NEXT: Function:        _Z4testPii
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          loop not vectorized
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Analysis
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            AllDisabled
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 13, Column: 5 }
 ; YAML-NEXT: Function:        _Z13test_disabledPii
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Analysis
 ; YAML-NEXT: Pass:            ''
 ; YAML-NEXT: Name:            CantIdentifyArrayBounds
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 19, Column: 5 }
 ; YAML-NEXT: Function:        _Z17test_array_boundsPiS_i
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: '
 ; YAML-NEXT:   - String:          cannot identify array bounds
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Missed
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            MissedDetails
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 19, Column: 5 }
 ; YAML-NEXT: Function:        _Z17test_array_boundsPiS_i
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          loop not vectorized
 ; YAML-NEXT:   - String:          ' (Force='
 ; YAML-NEXT:   - Force:           'true'
 ; YAML-NEXT:   - String:          ')'
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Failure
 ; YAML-NEXT: Pass:            transform-warning
 ; YAML-NEXT: Name:            FailedRequestedVectorization
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 19, Column: 5 }
 ; YAML-NEXT: Function:        _Z17test_array_boundsPiS_i
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering'
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Analysis
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            NoCFGForSelect
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 29, Column: 7 }
 ; YAML-NEXT: Function:        test_multiple_failures
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: '
 ; YAML-NEXT:   - String:          control flow cannot be substituted for a select
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Analysis
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            NonReductionValueUsedOutsideLoop
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 27, Column: 3 }
 ; YAML-NEXT: Function:        test_multiple_failures
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: '
 ; YAML-NEXT:   - String:          value that could not be identified as reduction is used outside the loop
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Analysis
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            CantComputeNumberOfIterations
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 27, Column: 3 }
 ; YAML-NEXT: Function:        test_multiple_failures
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          'loop not vectorized: '
 ; YAML-NEXT:   - String:          could not determine number of loop iterations
 ; YAML-NEXT: ...
 ; YAML-NEXT: --- !Missed
 ; YAML-NEXT: Pass:            loop-vectorize
 ; YAML-NEXT: Name:            MissedDetails
 ; YAML-NEXT: DebugLoc:        { File: source.cpp, Line: 27, Column: 3 }
 ; YAML-NEXT: Function:        test_multiple_failures
 ; YAML-NEXT: Args:
 ; YAML-NEXT:   - String:          loop not vectorized
 ; YAML-NEXT: ...

 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

 ; Function Attrs: nounwind optsize ssp uwtable
 define void @_Z4testPii(i32* nocapture %A, i32 %Length) #0 !dbg !4 {
 entry:
   %cmp10 = icmp sgt i32 %Length, 0, !dbg !12
   br i1 %cmp10, label %for.body, label %for.end, !dbg !12, !llvm.loop !14

 for.body:                                         ; preds = %entry, %for.body
   %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
   %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !16
   %0 = trunc i64 %indvars.iv to i32, !dbg !16
   %ld = load i32, i32* %arrayidx, align 4
   store i32 %0, i32* %arrayidx, align 4, !dbg !16, !tbaa !18
   %cmp3 = icmp sle i32 %ld, %Length, !dbg !22
   %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !12
   %1 = trunc i64 %indvars.iv.next to i32
   %cmp = icmp slt i32 %1, %Length, !dbg !12
   %or.cond = and i1 %cmp3, %cmp, !dbg !22
   br i1 %or.cond, label %for.body, label %for.end, !dbg !22

 for.end:                                          ; preds = %for.body, %entry
   ret void, !dbg !24
 }

 ; CHECK: _Z4testPii
 ; CHECK-NOT: x i32>
 ; CHECK: ret

 ; Function Attrs: nounwind optsize ssp uwtable
 define void @_Z13test_disabledPii(i32* nocapture %A, i32 %Length) #0 !dbg !7 {
 entry:
   %cmp4 = icmp sgt i32 %Length, 0, !dbg !25
   br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27

 for.body:                                         ; preds = %entry, %for.body
   %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
   %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !30
   %0 = trunc i64 %indvars.iv to i32, !dbg !30
   store i32 %0, i32* %arrayidx, align 4, !dbg !30, !tbaa !18
   %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !25
   %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !25
   %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !25
   br i1 %exitcond, label %for.end, label %for.body, !dbg !25, !llvm.loop !27

 for.end:                                          ; preds = %for.body, %entry
   ret void, !dbg !31
 }

 ; CHECK: _Z13test_disabledPii
 ; CHECK-NOT: x i32>
 ; CHECK: ret

 ; Function Attrs: nounwind optsize ssp uwtable
 define void @_Z17test_array_boundsPiS_i(i32* nocapture %A, i32* nocapture readonly %B, i32 %Length) #0 !dbg !8 {
 entry:
   %cmp9 = icmp sgt i32 %Length, 0, !dbg !32
   br i1 %cmp9, label %for.body.preheader, label %for.end, !dbg !32, !llvm.loop !34

 for.body.preheader:                               ; preds = %entry
   br label %for.body, !dbg !35

 for.body:                                         ; preds = %for.body.preheader, %for.body
   %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
   %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv, !dbg !35
   %0 = load i32, i32* %arrayidx, align 4, !dbg !35, !tbaa !18
   %idxprom1 = sext i32 %0 to i64, !dbg !35
   %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %idxprom1, !dbg !35
   %1 = load i32, i32* %arrayidx2, align 4, !dbg !35, !tbaa !18
   %arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !35
   store i32 %1, i32* %arrayidx4, align 4, !dbg !35, !tbaa !18
   %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !32
   %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !32
   %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !32
   br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !32, !llvm.loop !34

 for.end.loopexit:                                 ; preds = %for.body
   br label %for.end

 for.end:                                          ; preds = %for.end.loopexit, %entry
   ret void, !dbg !36
 }

 ; CHECK: _Z17test_array_boundsPiS_i
 ; CHECK-NOT: x i32>
 ; CHECK: ret

 ; Function Attrs: nounwind uwtable
 define i32 @test_multiple_failures(i32* nocapture readonly %A) #0 !dbg !46 {
 entry:
   br label %for.body, !dbg !38

 for.body:                                         ; preds = %entry, %for.inc
   %i.09 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
   %k.09 = phi i32 [ 0, %entry ], [ %k.1, %for.inc ]
   %arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.09, !dbg !40
   %0 = load i32, i32* %arrayidx, align 4, !dbg !40
   %tobool = icmp eq i32 %0, 0, !dbg !40
   br i1 %tobool, label %for.inc, label %if.then, !dbg !40

 if.then:                                          ; preds = %for.body
   %call = tail call i32 (...) @foo(), !dbg !41
   %.pre = load i32, i32* %arrayidx, align 4
   br label %for.inc, !dbg !42

 for.inc:                                          ; preds = %for.body, %if.then
   %1 = phi i32 [ %.pre, %if.then ], [ 0, %for.body ], !dbg !43
   %k.1 = phi i32 [ %call, %if.then ], [ %k.09, %for.body ]
   %add = add nsw i32 %1, %i.09, !dbg !44
   %cmp = icmp slt i32 %add, 1000, !dbg !45
   br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !38

 for.cond.cleanup:                                 ; preds = %for.inc
   ret i32 %k.1, !dbg !39
 }

 declare i32 @foo(...)

 ; CHECK: test_multiple_failure
 ; CHECK-NOT: x i32>
 ; CHECK: ret

 attributes #0 = { nounwind }

 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}

 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
 !1 = !DIFile(filename: "source.cpp", directory: ".")
 !2 = !{}
 !4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
 !5 = !DIFile(filename: "source.cpp", directory: ".")
 !6 = !DISubroutineType(types: !2)
 !7 = distinct !DISubprogram(name: "test_disabled", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, retainedNodes: !2)
 !8 = distinct !DISubprogram(name: "test_array_bounds", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 16, file: !1, scope: !5, type: !6, retainedNodes: !2)
 !9 = !{i32 2, !"Dwarf Version", i32 2}
 !10 = !{i32 2, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 3.5.0"}
 !12 = !DILocation(line: 3, column: 8, scope: !13)
 !13 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)
 !14 = !{!14, !15, !15}
 !15 = !{!"llvm.loop.vectorize.enable", i1 true}
 !16 = !DILocation(line: 4, column: 5, scope: !17)
 !17 = distinct !DILexicalBlock(line: 3, column: 36, file: !1, scope: !13)
 !18 = !{!19, !19, i64 0}
 !19 = !{!"int", !20, i64 0}
 !20 = !{!"omnipotent char", !21, i64 0}
 !21 = !{!"Simple C/C++ TBAA"}
 !22 = !DILocation(line: 5, column: 9, scope: !23)
 !23 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !17)
 !24 = !DILocation(line: 8, column: 1, scope: !4)
 !25 = !DILocation(line: 12, column: 8, scope: !26)
 !26 = distinct !DILexicalBlock(line: 12, column: 3, file: !1, scope: !7)
 !27 = !{!27, !28, !29}
 !28 = !{!"llvm.loop.interleave.count", i32 1}
 !29 = !{!"llvm.loop.vectorize.width", i32 1}
 !30 = !DILocation(line: 13, column: 5, scope: !26)
 !31 = !DILocation(line: 14, column: 1, scope: !7)
 !32 = !DILocation(line: 18, column: 8, scope: !33)
 !33 = distinct !DILexicalBlock(line: 18, column: 3, file: !1, scope: !8)
 !34 = !{!34, !15}
 !35 = !DILocation(line: 19, column: 5, scope: !33)
 !36 = !DILocation(line: 20, column: 1, scope: !8)
 !37 = distinct !DILexicalBlock(line: 24, column: 3, file: !1, scope: !46)
 !38 = !DILocation(line: 27, column: 3, scope: !37)
 !39 = !DILocation(line: 31, column: 3, scope: !37)
 !40 = !DILocation(line: 28, column: 9, scope: !37)
 !41 = !DILocation(line: 29, column: 11, scope: !37)
 !42 = !DILocation(line: 29, column: 7, scope: !37)
 !43 = !DILocation(line: 27, column: 32, scope: !37)
 !44 = !DILocation(line: 27, column: 30, scope: !37)
 !45 = !DILocation(line: 27, column: 21, scope: !37)
 !46 = distinct !DISubprogram(name: "test_multiple_failures", line: 26, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 26, file: !1, scope: !5, type: !6, retainedNodes: !2)
	; RUN: opt < %s -loop-vectorize -transform-warning -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 \| FileCheck %s
	; RUN: opt < %s -loop-vectorize -transform-warning -o /dev/null -pass-remarks-output=%t.yaml
	; RUN: cat %t.yaml \| FileCheck -check-prefix=YAML %s

	; RUN: opt < %s -passes=loop-vectorize,transform-warning -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 \| FileCheck %s
	; RUN: opt < %s -passes=loop-vectorize,transform-warning -o /dev/null -pass-remarks-output=%t.yaml
	; RUN: cat %t.yaml \| FileCheck -check-prefix=YAML %s

	; C/C++ code for tests
	; void test(int *A, int Length) {
	; #pragma clang loop vectorize(enable) interleave(enable)
	; for (int i = 0; i < Length; i++) {
	; A[i] = i;
	; if (A[i] > Length)
	; break;
	; }
	; }
	; File, line, and column should match those specified in the metadata
	; CHECK: remark: source.cpp:4:5: loop not vectorized: could not determine number of loop iterations
	; CHECK: remark: source.cpp:4:5: loop not vectorized

	; void test_disabled(int *A, int Length) {
	; #pragma clang loop vectorize(disable) interleave(disable)
	; for (int i = 0; i < Length; i++)
	; A[i] = i;
	; }
	; CHECK: remark: source.cpp:13:5: loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized

	; void test_array_bounds(int A, int B, int Length) {
	; #pragma clang loop vectorize(enable)
	; for (int i = 0; i < Length; i++)
	; A[i] = A[B[i]];
	; }
	; CHECK: remark: source.cpp:19:5: loop not vectorized: cannot identify array bounds
	; CHECK: remark: source.cpp:19:5: loop not vectorized
	; CHECK: warning: source.cpp:19:5: loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering

	; int foo();
	; void test_multiple_failures(int *A) {
	; int k = 0;
	; #pragma clang loop vectorize(enable) interleave(enable)
	; for (int i = 0; i < 1000; i+=A[i]) {
	; if (A[i])
	; k = foo();
	; }
	; return k;
	; }
	; CHECK: remark: source.cpp:29:7: loop not vectorized: control flow cannot be substituted for a select
	; CHECK: remark: source.cpp:27:3: loop not vectorized

	; YAML: --- !Analysis
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: CantComputeNumberOfIterations
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 4, Column: 5 }
	; YAML-NEXT: Function: _Z4testPii
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: '
	; YAML-NEXT: - String: could not determine number of loop iterations
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Missed
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: MissedDetails
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 4, Column: 5 }
	; YAML-NEXT: Function: _Z4testPii
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: loop not vectorized
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Analysis
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: AllDisabled
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 13, Column: 5 }
	; YAML-NEXT: Function: _Z13test_disabledPii
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Analysis
	; YAML-NEXT: Pass: ''
	; YAML-NEXT: Name: CantIdentifyArrayBounds
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 19, Column: 5 }
	; YAML-NEXT: Function: _Z17test_array_boundsPiS_i
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: '
	; YAML-NEXT: - String: cannot identify array bounds
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Missed
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: MissedDetails
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 19, Column: 5 }
	; YAML-NEXT: Function: _Z17test_array_boundsPiS_i
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: loop not vectorized
	; YAML-NEXT: - String: ' (Force='
	; YAML-NEXT: - Force: 'true'
	; YAML-NEXT: - String: ')'
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Failure
	; YAML-NEXT: Pass: transform-warning
	; YAML-NEXT: Name: FailedRequestedVectorization
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 19, Column: 5 }
	; YAML-NEXT: Function: _Z17test_array_boundsPiS_i
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering'
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Analysis
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: NoCFGForSelect
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 29, Column: 7 }
	; YAML-NEXT: Function: test_multiple_failures
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: '
	; YAML-NEXT: - String: control flow cannot be substituted for a select
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Analysis
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: NonReductionValueUsedOutsideLoop
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 }
	; YAML-NEXT: Function: test_multiple_failures
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: '
	; YAML-NEXT: - String: value that could not be identified as reduction is used outside the loop
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Analysis
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: CantComputeNumberOfIterations
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 }
	; YAML-NEXT: Function: test_multiple_failures
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: 'loop not vectorized: '
	; YAML-NEXT: - String: could not determine number of loop iterations
	; YAML-NEXT: ...
	; YAML-NEXT: --- !Missed
	; YAML-NEXT: Pass: loop-vectorize
	; YAML-NEXT: Name: MissedDetails
	; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 }
	; YAML-NEXT: Function: test_multiple_failures
	; YAML-NEXT: Args:
	; YAML-NEXT: - String: loop not vectorized
	; YAML-NEXT: ...

	target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

	; Function Attrs: nounwind optsize ssp uwtable
	define void @_Z4testPii(i32* nocapture %A, i32 %Length) #0 !dbg !4 {
	entry:
	%cmp10 = icmp sgt i32 %Length, 0, !dbg !12
	br i1 %cmp10, label %for.body, label %for.end, !dbg !12, !llvm.loop !14

	for.body: ; preds = %entry, %for.body
	%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
	%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !16
	%0 = trunc i64 %indvars.iv to i32, !dbg !16
	%ld = load i32, i32* %arrayidx, align 4
	store i32 %0, i32* %arrayidx, align 4, !dbg !16, !tbaa !18
	%cmp3 = icmp sle i32 %ld, %Length, !dbg !22
	%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !12
	%1 = trunc i64 %indvars.iv.next to i32
	%cmp = icmp slt i32 %1, %Length, !dbg !12
	%or.cond = and i1 %cmp3, %cmp, !dbg !22
	br i1 %or.cond, label %for.body, label %for.end, !dbg !22

	for.end: ; preds = %for.body, %entry
	ret void, !dbg !24
	}

	; CHECK: _Z4testPii
	; CHECK-NOT: x i32>
	; CHECK: ret

	; Function Attrs: nounwind optsize ssp uwtable
	define void @_Z13test_disabledPii(i32* nocapture %A, i32 %Length) #0 !dbg !7 {
	entry:
	%cmp4 = icmp sgt i32 %Length, 0, !dbg !25
	br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27

	for.body: ; preds = %entry, %for.body
	%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
	%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !30
	%0 = trunc i64 %indvars.iv to i32, !dbg !30
	store i32 %0, i32* %arrayidx, align 4, !dbg !30, !tbaa !18
	%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !25
	%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !25
	%exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !25
	br i1 %exitcond, label %for.end, label %for.body, !dbg !25, !llvm.loop !27

	for.end: ; preds = %for.body, %entry
	ret void, !dbg !31
	}

	; CHECK: _Z13test_disabledPii
	; CHECK-NOT: x i32>
	; CHECK: ret

	; Function Attrs: nounwind optsize ssp uwtable
	define void @_Z17test_array_boundsPiS_i(i32* nocapture %A, i32* nocapture readonly %B, i32 %Length) #0 !dbg !8 {
	entry:
	%cmp9 = icmp sgt i32 %Length, 0, !dbg !32
	br i1 %cmp9, label %for.body.preheader, label %for.end, !dbg !32, !llvm.loop !34

	for.body.preheader: ; preds = %entry
	br label %for.body, !dbg !35

	for.body: ; preds = %for.body.preheader, %for.body
	%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
	%arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv, !dbg !35
	%0 = load i32, i32* %arrayidx, align 4, !dbg !35, !tbaa !18
	%idxprom1 = sext i32 %0 to i64, !dbg !35
	%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %idxprom1, !dbg !35
	%1 = load i32, i32* %arrayidx2, align 4, !dbg !35, !tbaa !18
	%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !35
	store i32 %1, i32* %arrayidx4, align 4, !dbg !35, !tbaa !18
	%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !32
	%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !32
	%exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !32
	br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !32, !llvm.loop !34

	for.end.loopexit: ; preds = %for.body
	br label %for.end

	for.end: ; preds = %for.end.loopexit, %entry
	ret void, !dbg !36
	}

	; CHECK: _Z17test_array_boundsPiS_i
	; CHECK-NOT: x i32>
	; CHECK: ret

	; Function Attrs: nounwind uwtable
	define i32 @test_multiple_failures(i32* nocapture readonly %A) #0 !dbg !46 {
	entry:
	br label %for.body, !dbg !38

	for.body: ; preds = %entry, %for.inc
	%i.09 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
	%k.09 = phi i32 [ 0, %entry ], [ %k.1, %for.inc ]
	%arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.09, !dbg !40
	%0 = load i32, i32* %arrayidx, align 4, !dbg !40
	%tobool = icmp eq i32 %0, 0, !dbg !40
	br i1 %tobool, label %for.inc, label %if.then, !dbg !40

	if.then: ; preds = %for.body
	%call = tail call i32 (...) @foo(), !dbg !41
	%.pre = load i32, i32* %arrayidx, align 4
	br label %for.inc, !dbg !42

	for.inc: ; preds = %for.body, %if.then
	%1 = phi i32 [ %.pre, %if.then ], [ 0, %for.body ], !dbg !43
	%k.1 = phi i32 [ %call, %if.then ], [ %k.09, %for.body ]
	%add = add nsw i32 %1, %i.09, !dbg !44
	%cmp = icmp slt i32 %add, 1000, !dbg !45
	br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !38

	for.cond.cleanup: ; preds = %for.inc
	ret i32 %k.1, !dbg !39
	}

	declare i32 @foo(...)

	; CHECK: test_multiple_failure
	; CHECK-NOT: x i32>
	; CHECK: ret

	attributes #0 = { nounwind }

	!llvm.dbg.cu = !{!0}
	!llvm.module.flags = !{!9, !10}
	!llvm.ident = !{!11}

	!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
	!1 = !DIFile(filename: "source.cpp", directory: ".")
	!2 = !{}
	!4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
	!5 = !DIFile(filename: "source.cpp", directory: ".")
	!6 = !DISubroutineType(types: !2)
	!7 = distinct !DISubprogram(name: "test_disabled", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, retainedNodes: !2)
	!8 = distinct !DISubprogram(name: "test_array_bounds", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 16, file: !1, scope: !5, type: !6, retainedNodes: !2)
	!9 = !{i32 2, !"Dwarf Version", i32 2}
	!10 = !{i32 2, !"Debug Info Version", i32 3}
	!11 = !{!"clang version 3.5.0"}
	!12 = !DILocation(line: 3, column: 8, scope: !13)
	!13 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)
	!14 = !{!14, !15, !15}
	!15 = !{!"llvm.loop.vectorize.enable", i1 true}
	!16 = !DILocation(line: 4, column: 5, scope: !17)
	!17 = distinct !DILexicalBlock(line: 3, column: 36, file: !1, scope: !13)
	!18 = !{!19, !19, i64 0}
	!19 = !{!"int", !20, i64 0}
	!20 = !{!"omnipotent char", !21, i64 0}
	!21 = !{!"Simple C/C++ TBAA"}
	!22 = !DILocation(line: 5, column: 9, scope: !23)
	!23 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !17)
	!24 = !DILocation(line: 8, column: 1, scope: !4)
	!25 = !DILocation(line: 12, column: 8, scope: !26)
	!26 = distinct !DILexicalBlock(line: 12, column: 3, file: !1, scope: !7)
	!27 = !{!27, !28, !29}
	!28 = !{!"llvm.loop.interleave.count", i32 1}
	!29 = !{!"llvm.loop.vectorize.width", i32 1}
	!30 = !DILocation(line: 13, column: 5, scope: !26)
	!31 = !DILocation(line: 14, column: 1, scope: !7)
	!32 = !DILocation(line: 18, column: 8, scope: !33)
	!33 = distinct !DILexicalBlock(line: 18, column: 3, file: !1, scope: !8)
	!34 = !{!34, !15}
	!35 = !DILocation(line: 19, column: 5, scope: !33)
	!36 = !DILocation(line: 20, column: 1, scope: !8)
	!37 = distinct !DILexicalBlock(line: 24, column: 3, file: !1, scope: !46)
	!38 = !DILocation(line: 27, column: 3, scope: !37)
	!39 = !DILocation(line: 31, column: 3, scope: !37)
	!40 = !DILocation(line: 28, column: 9, scope: !37)
	!41 = !DILocation(line: 29, column: 11, scope: !37)
	!42 = !DILocation(line: 29, column: 7, scope: !37)
	!43 = !DILocation(line: 27, column: 32, scope: !37)
	!44 = !DILocation(line: 27, column: 30, scope: !37)
	!45 = !DILocation(line: 27, column: 21, scope: !37)
	!46 = distinct !DISubprogram(name: "test_multiple_failures", line: 26, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 26, file: !1, scope: !5, type: !6, retainedNodes: !2)