; RUN: opt < %s -passes=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(ptr nocapture %A, ptr 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, ptr %B, i64 %indvars.iv27, !dbg !14
%0 = load i32, ptr %arrayidx, align 4, !dbg !14, !tbaa !22
%idxprom1 = sext i32 %0 to i64, !dbg !14
%arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1, !dbg !14
%1 = load i32, ptr %arrayidx2, align 4, !dbg !14, !tbaa !22
%inc = add nsw i32 %1, 1, !dbg !14
store i32 %inc, ptr %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, ptr %A, i64 %indvars.iv, !dbg !20
%2 = load i32, ptr %arrayidx9, align 4, !dbg !20, !tbaa !22
%idxprom10 = sext i32 %2 to i64, !dbg !20
%arrayidx11 = getelementptr inbounds i32, ptr %B, i64 %idxprom10, !dbg !20
%3 = load i32, ptr %arrayidx11, align 4, !dbg !20, !tbaa !22
%inc12 = add nsw i32 %3, 1, !dbg !20
store i32 %inc12, ptr %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)
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