1 files changed, 100 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/no_array_bounds.ll b/llvm/test/Transforms/LoopVectorize/no_array_bounds.ll
new file mode 100644
index 00000000000..c6a2431eba5
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/no_array_bounds.ll
@@ -0,0 +1,100 @@
+; RUN: opt < %s -loop-vectorize -transform-warning -S 2>&1 | FileCheck %s
+
+; Verify warning is generated when vectorization/ interleaving is explicitly specified and fails to occur.
+; CHECK: warning: no_array_bounds.cpp:5:5: 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
+; CHECK: warning: no_array_bounds.cpp:10:5: loop not interleaved: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
+
+;  #pragma clang loop vectorize(enable)
+;  for (int i = 0; i < number; i++) {
+;    A[B[i]]++;
+;  }
+
+;  #pragma clang loop vectorize(disable) interleave(enable)
+;  for (int i = 0; i < number; i++) {
+;    B[A[i]]++;
+;  }
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+; Function Attrs: nounwind ssp uwtable
+define void @_Z4testPiS_i(i32* nocapture %A, i32* nocapture %B, i32 %number) #0 !dbg !4 {
+entry:
+  %cmp25 = icmp sgt i32 %number, 0, !dbg !10
+  br i1 %cmp25, label %for.body.preheader, label %for.end15, !dbg !10, !llvm.loop !12
+
+for.body.preheader:                               ; preds = %entry
+  br label %for.body, !dbg !14
+
+for.cond5.preheader:                              ; preds = %for.body
+  br i1 %cmp25, label %for.body7.preheader, label %for.end15, !dbg !16, !llvm.loop !18
+
+for.body7.preheader:                              ; preds = %for.cond5.preheader
+  br label %for.body7, !dbg !20
+
+for.body:                                         ; preds = %for.body.preheader, %for.body
+  %indvars.iv27 = phi i64 [ %indvars.iv.next28, %for.body ], [ 0, %for.body.preheader ]
+  %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv27, !dbg !14
+  %0 = load i32, i32* %arrayidx, align 4, !dbg !14, !tbaa !22
+  %idxprom1 = sext i32 %0 to i64, !dbg !14
+  %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %idxprom1, !dbg !14
+  %1 = load i32, i32* %arrayidx2, align 4, !dbg !14, !tbaa !22
+  %inc = add nsw i32 %1, 1, !dbg !14
+  store i32 %inc, i32* %arrayidx2, align 4, !dbg !14, !tbaa !22
+  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1, !dbg !10
+  %lftr.wideiv29 = trunc i64 %indvars.iv.next28 to i32, !dbg !10
+  %exitcond30 = icmp eq i32 %lftr.wideiv29, %number, !dbg !10
+  br i1 %exitcond30, label %for.cond5.preheader, label %for.body, !dbg !10, !llvm.loop !12
+
+for.body7:                                        ; preds = %for.body7.preheader, %for.body7
+  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body7 ], [ 0, %for.body7.preheader ]
+  %arrayidx9 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !20
+  %2 = load i32, i32* %arrayidx9, align 4, !dbg !20, !tbaa !22
+  %idxprom10 = sext i32 %2 to i64, !dbg !20
+  %arrayidx11 = getelementptr inbounds i32, i32* %B, i64 %idxprom10, !dbg !20
+  %3 = load i32, i32* %arrayidx11, align 4, !dbg !20, !tbaa !22
+  %inc12 = add nsw i32 %3, 1, !dbg !20
+  store i32 %inc12, i32* %arrayidx11, align 4, !dbg !20, !tbaa !22
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !16
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !16
+  %exitcond = icmp eq i32 %lftr.wideiv, %number, !dbg !16
+  br i1 %exitcond, label %for.end15.loopexit, label %for.body7, !dbg !16, !llvm.loop !18
+
+for.end15.loopexit:                               ; preds = %for.body7
+  br label %for.end15
+
+for.end15:                                        ; preds = %for.end15.loopexit, %entry, %for.cond5.preheader
+  ret void, !dbg !26
+}
+
+attributes #0 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
+!1 = !DIFile(filename: "no_array_bounds.cpp", directory: ".")
+!2 = !{}
+!4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)
+!5 = !DIFile(filename: "no_array_bounds.cpp", directory: ".")
+!6 = !DISubroutineType(types: !2)
+!7 = !{i32 2, !"Dwarf Version", i32 2}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
+!9 = !{!"clang version 3.5.0"}
+!10 = !DILocation(line: 4, column: 8, scope: !11)
+!11 = distinct !DILexicalBlock(line: 4, column: 3, file: !1, scope: !4)
+!12 = !{!12, !13}
+!13 = !{!"llvm.loop.vectorize.enable", i1 true}
+!14 = !DILocation(line: 5, column: 5, scope: !15)
+!15 = distinct !DILexicalBlock(line: 4, column: 36, file: !1, scope: !11)
+!16 = !DILocation(line: 9, column: 8, scope: !17)
+!17 = distinct !DILexicalBlock(line: 9, column: 3, file: !1, scope: !4)
+!18 = !{!18, !13, !19}
+!19 = !{!"llvm.loop.vectorize.width", i32 1}
+!20 = !DILocation(line: 10, column: 5, scope: !21)
+!21 = distinct !DILexicalBlock(line: 9, column: 36, file: !1, scope: !17)
+!22 = !{!23, !23, i64 0}
+!23 = !{!"int", !24, i64 0}
+!24 = !{!"omnipotent char", !25, i64 0}
+!25 = !{!"Simple C/C++ TBAA"}
+!26 = !DILocation(line: 12, column: 1, scope: !4)