1; RUN: opt < %s -passes=loop-vectorize,transform-warning -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s 2; RUN: opt < %s -passes=loop-vectorize,transform-warning -o /dev/null -pass-remarks-output=%t.yaml 3; RUN: cat %t.yaml | FileCheck -check-prefix=YAML %s 4 5; C/C++ code for tests 6; void test(int *A, int Length) { 7; #pragma clang loop vectorize(enable) interleave(enable) 8; for (int i = 0; i < Length; i++) { 9; A[i] = i; 10; if (A[i] > Length) 11; break; 12; } 13; } 14; File, line, and column should match those specified in the metadata 15; CHECK: remark: source.cpp:5:9: loop not vectorized: Cannot vectorize uncountable loop 16; CHECK: remark: source.cpp:5:9: loop not vectorized 17 18; void test_disabled(int *A, int Length) { 19; #pragma clang loop vectorize(disable) interleave(disable) 20; for (int i = 0; i < Length; i++) 21; A[i] = i; 22; } 23; CHECK: remark: source.cpp:12:8: loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized 24 25; void test_array_bounds(int *A, int *B, int Length) { 26; #pragma clang loop vectorize(enable) 27; for (int i = 0; i < Length; i++) 28; A[i] = A[B[i]]; 29; } 30; CHECK: remark: source.cpp:19:5: loop not vectorized: cannot identify array bounds 31; CHECK: remark: source.cpp:18:8: loop not vectorized (Force=true) 32; CHECK: warning: source.cpp:18:8: 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 33 34; int foo(); 35; void test_multiple_failures(int *A) { 36; int k = 0; 37; #pragma clang loop vectorize(enable) interleave(enable) 38; for (int i = 0; i < 1000; i+=A[i]) { 39; if (A[i]) 40; k = foo(); 41; } 42; return k; 43; } 44; CHECK: remark: source.cpp:29:7: loop not vectorized: Control flow cannot be substituted for a select 45; CHECK: remark: source.cpp:27:3: loop not vectorized 46 47; YAML: --- !Analysis 48; YAML-NEXT: Pass: loop-vectorize 49; YAML-NEXT: Name: UnsupportedUncountableLoop 50; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 5, Column: 9 } 51; YAML-NEXT: Function: _Z4testPii 52; YAML-NEXT: Args: 53; YAML-NEXT: - String: 'loop not vectorized: ' 54; YAML-NEXT: - String: Cannot vectorize uncountable loop 55; YAML-NEXT: ... 56; YAML-NEXT: --- !Missed 57; YAML-NEXT: Pass: loop-vectorize 58; YAML-NEXT: Name: MissedDetails 59; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 5, Column: 9 } 60; YAML-NEXT: Function: _Z4testPii 61; YAML-NEXT: Args: 62; YAML-NEXT: - String: loop not vectorized 63; YAML-NEXT: ... 64; YAML-NEXT: --- !Analysis 65; YAML-NEXT: Pass: loop-vectorize 66; YAML-NEXT: Name: AllDisabled 67; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 12, Column: 8 } 68; YAML-NEXT: Function: _Z13test_disabledPii 69; YAML-NEXT: Args: 70; YAML-NEXT: - String: 'loop not vectorized: vectorization and interleaving are explicitly disabled, or the loop has already been vectorized 71; YAML-NEXT: ... 72; YAML-NEXT: --- !Analysis 73; YAML-NEXT: Pass: '' 74; YAML-NEXT: Name: CantIdentifyArrayBounds 75; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 19, Column: 5 } 76; YAML-NEXT: Function: _Z17test_array_boundsPiS_i 77; YAML-NEXT: Args: 78; YAML-NEXT: - String: 'loop not vectorized: ' 79; YAML-NEXT: - String: cannot identify array bounds 80; YAML-NEXT: ... 81; YAML-NEXT: --- !Missed 82; YAML-NEXT: Pass: loop-vectorize 83; YAML-NEXT: Name: MissedDetails 84; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 18, Column: 8 } 85; YAML-NEXT: Function: _Z17test_array_boundsPiS_i 86; YAML-NEXT: Args: 87; YAML-NEXT: - String: loop not vectorized 88; YAML-NEXT: - String: ' (Force=' 89; YAML-NEXT: - Force: 'true' 90; YAML-NEXT: - String: ')' 91; YAML-NEXT: ... 92; YAML-NEXT: --- !Failure 93; YAML-NEXT: Pass: transform-warning 94; YAML-NEXT: Name: FailedRequestedVectorization 95; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 18, Column: 8 } 96; YAML-NEXT: Function: _Z17test_array_boundsPiS_i 97; YAML-NEXT: Args: 98; 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' 99; YAML-NEXT: ... 100; YAML-NEXT: --- !Analysis 101; YAML-NEXT: Pass: loop-vectorize 102; YAML-NEXT: Name: NoCFGForSelect 103; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 29, Column: 7 } 104; YAML-NEXT: Function: test_multiple_failures 105; YAML-NEXT: Args: 106; YAML-NEXT: - String: 'loop not vectorized: ' 107; YAML-NEXT: - String: Control flow cannot be substituted for a select 108; YAML-NEXT: ... 109; YAML-NEXT: --- !Analysis 110; YAML-NEXT: Pass: loop-vectorize 111; YAML-NEXT: Name: NonReductionValueUsedOutsideLoop 112; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 } 113; YAML-NEXT: Function: test_multiple_failures 114; YAML-NEXT: Args: 115; YAML-NEXT: - String: 'loop not vectorized: ' 116; YAML-NEXT: - String: value that could not be identified as reduction is used outside the loop 117; YAML-NEXT: ... 118; YAML-NEXT: --- !Analysis 119; YAML-NEXT: Pass: loop-vectorize 120; YAML-NEXT: Name: UnsupportedUncountableLoop 121; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 } 122; YAML-NEXT: Function: test_multiple_failures 123; YAML-NEXT: Args: 124; YAML-NEXT: - String: 'loop not vectorized: ' 125; YAML-NEXT: - String: Cannot vectorize uncountable loop 126; YAML-NEXT: ... 127; YAML: --- !Missed 128; YAML-NEXT: Pass: loop-vectorize 129; YAML-NEXT: Name: MissedDetails 130; YAML-NEXT: DebugLoc: { File: source.cpp, Line: 27, Column: 3 } 131; YAML-NEXT: Function: test_multiple_failures 132; YAML-NEXT: Args: 133; YAML-NEXT: - String: loop not vectorized 134; YAML-NEXT: ... 135 136target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 137 138; Function Attrs: nounwind optsize ssp uwtable 139define void @_Z4testPii(ptr nocapture %A, i32 %Length) #0 !dbg !4 { 140entry: 141 %cmp10 = icmp sgt i32 %Length, 0, !dbg !12 142 br i1 %cmp10, label %for.body, label %for.end, !dbg !12, !llvm.loop !14 143 144for.body: ; preds = %entry, %for.body 145 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 146 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv, !dbg !16 147 %0 = trunc i64 %indvars.iv to i32, !dbg !16 148 %ld = load i32, ptr %arrayidx, align 4 149 store i32 %0, ptr %arrayidx, align 4, !dbg !16, !tbaa !18 150 %cmp3 = icmp sle i32 %ld, %Length, !dbg !22 151 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !12 152 %1 = trunc i64 %indvars.iv.next to i32 153 %cmp = icmp slt i32 %1, %Length, !dbg !12 154 %or.cond = and i1 %cmp3, %cmp, !dbg !22 155 br i1 %or.cond, label %for.body, label %for.end, !dbg !22 156 157for.end: ; preds = %for.body, %entry 158 ret void, !dbg !24 159} 160 161; CHECK: _Z4testPii 162; CHECK-NOT: x i32> 163; CHECK: ret 164 165; Function Attrs: nounwind optsize ssp uwtable 166define void @_Z13test_disabledPii(ptr nocapture %A, i32 %Length) #0 !dbg !7 { 167entry: 168 %cmp4 = icmp sgt i32 %Length, 0, !dbg !25 169 br i1 %cmp4, label %for.body, label %for.end, !dbg !25, !llvm.loop !27 170 171for.body: ; preds = %entry, %for.body 172 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 173 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv, !dbg !30 174 %0 = trunc i64 %indvars.iv to i32, !dbg !30 175 store i32 %0, ptr %arrayidx, align 4, !dbg !30, !tbaa !18 176 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !25 177 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !25 178 %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !25 179 br i1 %exitcond, label %for.end, label %for.body, !dbg !25, !llvm.loop !27 180 181for.end: ; preds = %for.body, %entry 182 ret void, !dbg !31 183} 184 185; CHECK: _Z13test_disabledPii 186; CHECK-NOT: x i32> 187; CHECK: ret 188 189; Function Attrs: nounwind optsize ssp uwtable 190define void @_Z17test_array_boundsPiS_i(ptr nocapture %A, ptr nocapture readonly %B, i32 %Length) #0 !dbg !8 { 191entry: 192 %cmp9 = icmp sgt i32 %Length, 0, !dbg !32 193 br i1 %cmp9, label %for.body.preheader, label %for.end, !dbg !32, !llvm.loop !34 194 195for.body.preheader: ; preds = %entry 196 br label %for.body, !dbg !32 197 198for.body: ; preds = %for.body.preheader, %for.body 199 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] 200 %arrayidx = getelementptr inbounds i32, ptr %B, i64 %indvars.iv, !dbg !35 201 %0 = load i32, ptr %arrayidx, align 4, !dbg !35, !tbaa !18 202 %idxprom1 = sext i32 %0 to i64, !dbg !35 203 %arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %idxprom1, !dbg !35 204 %1 = load i32, ptr %arrayidx2, align 4, !dbg !35, !tbaa !18 205 %arrayidx4 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv, !dbg !35 206 store i32 %1, ptr %arrayidx4, align 4, !dbg !35, !tbaa !18 207 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !32 208 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !32 209 %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !32 210 br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !32, !llvm.loop !34 211 212for.end.loopexit: ; preds = %for.body 213 br label %for.end 214 215for.end: ; preds = %for.end.loopexit, %entry 216 ret void, !dbg !36 217} 218 219; CHECK: _Z17test_array_boundsPiS_i 220; CHECK-NOT: x i32> 221; CHECK: ret 222 223; Function Attrs: nounwind uwtable 224define i32 @test_multiple_failures(ptr nocapture readonly %A) #0 !dbg !46 { 225entry: 226 br label %for.body, !dbg !38 227 228for.body: ; preds = %entry, %for.inc 229 %i.09 = phi i32 [ 0, %entry ], [ %add, %for.inc ] 230 %k.09 = phi i32 [ 0, %entry ], [ %k.1, %for.inc ] 231 %arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.09, !dbg !40 232 %0 = load i32, ptr %arrayidx, align 4, !dbg !40 233 %tobool = icmp eq i32 %0, 0, !dbg !40 234 br i1 %tobool, label %for.inc, label %if.then, !dbg !40 235 236if.then: ; preds = %for.body 237 %call = tail call i32 (...) @foo(), !dbg !41 238 %.pre = load i32, ptr %arrayidx, align 4 239 br label %for.inc, !dbg !42 240 241for.inc: ; preds = %for.body, %if.then 242 %1 = phi i32 [ %.pre, %if.then ], [ 0, %for.body ], !dbg !43 243 %k.1 = phi i32 [ %call, %if.then ], [ %k.09, %for.body ] 244 %add = add nsw i32 %1, %i.09, !dbg !44 245 %cmp = icmp slt i32 %add, 1000, !dbg !45 246 br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !38 247 248for.cond.cleanup: ; preds = %for.inc 249 ret i32 %k.1, !dbg !39 250} 251 252declare i32 @foo(...) 253 254; CHECK: test_multiple_failure 255; CHECK-NOT: x i32> 256; CHECK: ret 257 258attributes #0 = { nounwind } 259 260!llvm.dbg.cu = !{!0} 261!llvm.module.flags = !{!9, !10} 262!llvm.ident = !{!11} 263 264!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) 265!1 = !DIFile(filename: "source.cpp", directory: ".") 266!2 = !{} 267!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) 268!5 = !DIFile(filename: "source.cpp", directory: ".") 269!6 = !DISubroutineType(types: !2) 270!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) 271!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) 272!9 = !{i32 2, !"Dwarf Version", i32 2} 273!10 = !{i32 2, !"Debug Info Version", i32 3} 274!11 = !{!"clang version 3.5.0"} 275!12 = !DILocation(line: 3, column: 8, scope: !13) 276!13 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4) 277!14 = !{!14, !15, !15} 278!15 = !{!"llvm.loop.vectorize.enable", i1 true} 279!16 = !DILocation(line: 4, column: 5, scope: !17) 280!17 = distinct !DILexicalBlock(line: 3, column: 36, file: !1, scope: !13) 281!18 = !{!19, !19, i64 0} 282!19 = !{!"int", !20, i64 0} 283!20 = !{!"omnipotent char", !21, i64 0} 284!21 = !{!"Simple C/C++ TBAA"} 285!22 = !DILocation(line: 5, column: 9, scope: !23) 286!23 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !17) 287!24 = !DILocation(line: 8, column: 1, scope: !4) 288!25 = !DILocation(line: 12, column: 8, scope: !26) 289!26 = distinct !DILexicalBlock(line: 12, column: 3, file: !1, scope: !7) 290!27 = !{!27, !28, !29} 291!28 = !{!"llvm.loop.interleave.count", i32 1} 292!29 = !{!"llvm.loop.vectorize.width", i32 1} 293!30 = !DILocation(line: 13, column: 5, scope: !26) 294!31 = !DILocation(line: 14, column: 1, scope: !7) 295!32 = !DILocation(line: 18, column: 8, scope: !33) 296!33 = distinct !DILexicalBlock(line: 18, column: 3, file: !1, scope: !8) 297!34 = !{!34, !15} 298!35 = !DILocation(line: 19, column: 5, scope: !33) 299!36 = !DILocation(line: 20, column: 1, scope: !8) 300!37 = distinct !DILexicalBlock(line: 24, column: 3, file: !1, scope: !46) 301!38 = !DILocation(line: 27, column: 3, scope: !37) 302!39 = !DILocation(line: 31, column: 3, scope: !37) 303!40 = !DILocation(line: 28, column: 9, scope: !37) 304!41 = !DILocation(line: 29, column: 11, scope: !37) 305!42 = !DILocation(line: 29, column: 7, scope: !37) 306!43 = !DILocation(line: 27, column: 32, scope: !37) 307!44 = !DILocation(line: 27, column: 30, scope: !37) 308!45 = !DILocation(line: 27, column: 21, scope: !37) 309!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) 310