| ; 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) |