1; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S < %s 2>&1 \ 2; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=NO_REMARKS 3; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \ 4; RUN: -pass-remarks-missed=loop-distribute < %s 2>&1 \ 5; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=MISSED_REMARKS 6; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \ 7; RUN: -pass-remarks-analysis=loop-distribute < %s 2>&1 \ 8; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=ANALYSIS_REMARKS 9; RUN: opt -loop-simplify -loop-distribute -enable-loop-distribute -S \ 10; RUN: -pass-remarks=loop-distribute < %s 2>&1 \ 11; RUN: | FileCheck %s --check-prefix=ALWAYS --check-prefix=REMARKS 12 13; This is the input program: 14; 15; 1 void forced (char *A, char *B, char *C, int N) { 16; 2 #pragma clang loop distribute(enable) 17; 3 for(int i = 0; i < N; i++) { 18; 4 A[i] = B[i] * C[i]; 19; 5 } 20; 6 } 21; 7 22; 8 void not_forced (char *A, char *B, char *C, int N) { 23; 9 for(int i = 0; i < N; i++) { 24; 10 A[i] = B[i] * C[i]; 25; 11 } 26; 12 } 27; 13 28; 14 void success (char *A, char *B, char *C, char *D, char *E, int N) { 29; 15 for(int i = 0; i < N; i++) { 30; 16 A[i + 1] = A[i] + B[i]; 31; 17 C[i] = D[i] * E[i]; 32; 18 } 33; 19 } 34 35target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 36target triple = "x86_64-apple-macosx10.11.0" 37 38; MISSED_REMARKS: remark: /tmp/t.c:3:3: loop not distributed: use -Rpass-analysis=loop-distribute for more info 39; ALWAYS: remark: /tmp/t.c:3:3: loop not distributed: memory operations are safe for vectorization 40; ALWAYS: warning: /tmp/t.c:3:3: loop not distributed: failed explicitly specified loop distribution 41 42define void @forced(i8* %A, i8* %B, i8* %C, i32 %N) !dbg !7 { 43entry: 44 %cmp12 = icmp sgt i32 %N, 0, !dbg !9 45 br i1 %cmp12, label %ph, label %for.cond.cleanup, !dbg !10 46 47ph: 48 br label %for.body 49 50for.body: 51 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] 52 %arrayidx = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !12 53 %0 = load i8, i8* %arrayidx, align 1, !dbg !12, !tbaa !13 54 %arrayidx2 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !16 55 %1 = load i8, i8* %arrayidx2, align 1, !dbg !16, !tbaa !13 56 %mul = mul i8 %1, %0, !dbg !17 57 %arrayidx6 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !18 58 store i8 %mul, i8* %arrayidx6, align 1, !dbg !19, !tbaa !13 59 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 60 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10 61 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !10 62 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !10, !llvm.loop !20 63 64for.cond.cleanup: 65 ret void, !dbg !11 66} 67 68; NO_REMARKS-NOT: remark: /tmp/t.c:9:3: loop not distributed: memory operations are safe for vectorization 69; MISSED_REMARKS: remark: /tmp/t.c:9:3: loop not distributed: use -Rpass-analysis=loop-distribute for more info 70; ANALYSIS_REMARKS: remark: /tmp/t.c:9:3: loop not distributed: memory operations are safe for vectorization 71; ALWAYS-NOT: warning: /tmp/t.c:9:3: loop not distributed: failed explicitly specified loop distribution 72 73define void @not_forced(i8* %A, i8* %B, i8* %C, i32 %N) !dbg !22 { 74entry: 75 %cmp12 = icmp sgt i32 %N, 0, !dbg !23 76 br i1 %cmp12, label %ph, label %for.cond.cleanup, !dbg !24 77 78ph: 79 br label %for.body 80 81for.body: 82 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] 83 %arrayidx = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !26 84 %0 = load i8, i8* %arrayidx, align 1, !dbg !26, !tbaa !13 85 %arrayidx2 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !27 86 %1 = load i8, i8* %arrayidx2, align 1, !dbg !27, !tbaa !13 87 %mul = mul i8 %1, %0, !dbg !28 88 %arrayidx6 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !29 89 store i8 %mul, i8* %arrayidx6, align 1, !dbg !30, !tbaa !13 90 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !24 91 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !24 92 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !24 93 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !24 94 95for.cond.cleanup: 96 ret void, !dbg !25 97} 98 99; REMARKS: remark: /tmp/t.c:15:3: distributed loop 100 101define void @success(i8* %A, i8* %B, i8* %C, i8* %D, i8* %E, i32 %N) !dbg !31 { 102entry: 103 %cmp28 = icmp sgt i32 %N, 0, !dbg !32 104 br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !33 105 106ph: 107 br label %for.body 108 109for.body: 110 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] 111 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !35 112 %0 = load i8, i8* %arrayidx, align 1, !dbg !35, !tbaa !13 113 %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !36 114 %1 = load i8, i8* %arrayidx2, align 1, !dbg !36, !tbaa !13 115 %add = add i8 %1, %0, !dbg !37 116 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !33 117 %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !38 118 store i8 %add, i8* %arrayidx7, align 1, !dbg !39, !tbaa !13 119 %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !40 120 %2 = load i8, i8* %arrayidx9, align 1, !dbg !40, !tbaa !13 121 %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !41 122 %3 = load i8, i8* %arrayidx12, align 1, !dbg !41, !tbaa !13 123 %mul = mul i8 %3, %2, !dbg !42 124 %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !43 125 store i8 %mul, i8* %arrayidx16, align 1, !dbg !44, !tbaa !13 126 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !33 127 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !33 128 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !33 129 130for.cond.cleanup: 131 ret void, !dbg !34 132} 133 134!llvm.dbg.cu = !{!0} 135!llvm.module.flags = !{!3, !4} 136 137!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 267633) (llvm/trunk 267675)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2) 138!1 = !DIFile(filename: "/tmp/t.c", directory: "/tmp") 139!2 = !{} 140!3 = !{i32 2, !"Dwarf Version", i32 2} 141!4 = !{i32 2, !"Debug Info Version", i32 3} 142!7 = distinct !DISubprogram(name: "forced", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) 143!8 = !DISubroutineType(types: !2) 144!9 = !DILocation(line: 3, column: 20, scope: !7) 145!10 = !DILocation(line: 3, column: 3, scope: !7) 146!11 = !DILocation(line: 6, column: 1, scope: !7) 147!12 = !DILocation(line: 4, column: 12, scope: !7) 148!13 = !{!14, !14, i64 0} 149!14 = !{!"omnipotent char", !15, i64 0} 150!15 = !{!"Simple C/C++ TBAA"} 151!16 = !DILocation(line: 4, column: 19, scope: !7) 152!17 = !DILocation(line: 4, column: 17, scope: !7) 153!18 = !DILocation(line: 4, column: 5, scope: !7) 154!19 = !DILocation(line: 4, column: 10, scope: !7) 155!20 = distinct !{!20, !21} 156!21 = !{!"llvm.loop.distribute.enable", i1 true} 157!22 = distinct !DISubprogram(name: "not_forced", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) 158!23 = !DILocation(line: 9, column: 20, scope: !22) 159!24 = !DILocation(line: 9, column: 3, scope: !22) 160!25 = !DILocation(line: 12, column: 1, scope: !22) 161!26 = !DILocation(line: 10, column: 12, scope: !22) 162!27 = !DILocation(line: 10, column: 19, scope: !22) 163!28 = !DILocation(line: 10, column: 17, scope: !22) 164!29 = !DILocation(line: 10, column: 5, scope: !22) 165!30 = !DILocation(line: 10, column: 10, scope: !22) 166!31 = distinct !DISubprogram(name: "success", scope: !1, file: !1, line: 14, type: !8, isLocal: false, isDefinition: true, scopeLine: 14, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) 167!32 = !DILocation(line: 15, column: 20, scope: !31) 168!33 = !DILocation(line: 15, column: 3, scope: !31) 169!34 = !DILocation(line: 19, column: 1, scope: !31) 170!35 = !DILocation(line: 16, column: 16, scope: !31) 171!36 = !DILocation(line: 16, column: 23, scope: !31) 172!37 = !DILocation(line: 16, column: 21, scope: !31) 173!38 = !DILocation(line: 16, column: 5, scope: !31) 174!39 = !DILocation(line: 16, column: 14, scope: !31) 175!40 = !DILocation(line: 17, column: 12, scope: !31) 176!41 = !DILocation(line: 17, column: 19, scope: !31) 177!42 = !DILocation(line: 17, column: 17, scope: !31) 178!43 = !DILocation(line: 17, column: 5, scope: !31) 179!44 = !DILocation(line: 17, column: 10, scope: !31) 180