| ; RUN: opt -S -loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s |
| ; RUN: opt -S -passes=loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s |
| |
| ; 1 void cold(char *A, char *B, char *C, char *D, char *E, int N) { |
| ; 2 for(int i = 0; i < N; i++) { |
| ; 3 A[i + 1] = A[i] + B[i]; |
| ; 4 C[i] = D[i] * E[i]; |
| ; 5 } |
| ; 6 } |
| ; 7 |
| ; 8 void hot(char *A, char *B, char *C, char *D, char *E, int N) { |
| ; 9 for(int i = 0; i < N; i++) { |
| ; 10 A[i + 1] = A[i] + B[i]; |
| ; 11 C[i] = D[i] * E[i]; |
| ; 12 } |
| ; 13 } |
| ; 14 |
| ; 15 void unknown(char *A, char *B, char *C, char *D, char *E, int N) { |
| ; 16 for(int i = 0; i < N; i++) { |
| ; 17 A[i + 1] = A[i] + B[i]; |
| ; 18 C[i] = D[i] * E[i]; |
| ; 19 } |
| ; 20 } |
| |
| ; CHECK: remark: /tmp/s.c:2:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop (hotness: 300) |
| ; CHECK: remark: /tmp/s.c:9:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop (hotness: 5000) |
| ; CHECK: remark: /tmp/s.c:16:3: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop{{$}} |
| |
| ; ModuleID = '/tmp/s.c' |
| source_filename = "/tmp/s.c" |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; Function Attrs: norecurse nounwind ssp uwtable |
| define void @cold(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !7 !prof !56 { |
| entry: |
| %cmp28 = icmp sgt i32 %N, 0, !dbg !9 |
| br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !10, !prof !58 |
| |
| ph: |
| br label %for.body |
| |
| for.body: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] |
| %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !12 |
| %0 = load i8, i8* %arrayidx, align 1, !dbg !12, !tbaa !13 |
| %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !16 |
| %1 = load i8, i8* %arrayidx2, align 1, !dbg !16, !tbaa !13 |
| %add = add i8 %1, %0, !dbg !17 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 |
| %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !18 |
| store i8 %add, i8* %arrayidx7, align 1, !dbg !19, !tbaa !13 |
| %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !20 |
| %2 = load i8, i8* %arrayidx9, align 1, !dbg !20, !tbaa !13 |
| %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !21 |
| %3 = load i8, i8* %arrayidx12, align 1, !dbg !21, !tbaa !13 |
| %mul = mul i8 %3, %2, !dbg !22 |
| %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !23 |
| store i8 %mul, i8* %arrayidx16, align 1, !dbg !24, !tbaa !13 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10 |
| %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !10 |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !10, !llvm.loop !25, !prof !59 |
| |
| for.cond.cleanup: |
| ret void, !dbg !11 |
| } |
| |
| ; Function Attrs: norecurse nounwind ssp uwtable |
| define void @hot(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !26 !prof !57 { |
| entry: |
| %cmp28 = icmp sgt i32 %N, 0, !dbg !27 |
| br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !28, !prof !58 |
| |
| ph: |
| br label %for.body |
| |
| for.body: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] |
| %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !30 |
| %0 = load i8, i8* %arrayidx, align 1, !dbg !30, !tbaa !13 |
| %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !31 |
| %1 = load i8, i8* %arrayidx2, align 1, !dbg !31, !tbaa !13 |
| %add = add i8 %1, %0, !dbg !32 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !28 |
| %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !33 |
| store i8 %add, i8* %arrayidx7, align 1, !dbg !34, !tbaa !13 |
| %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !35 |
| %2 = load i8, i8* %arrayidx9, align 1, !dbg !35, !tbaa !13 |
| %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !36 |
| %3 = load i8, i8* %arrayidx12, align 1, !dbg !36, !tbaa !13 |
| %mul = mul i8 %3, %2, !dbg !37 |
| %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !38 |
| store i8 %mul, i8* %arrayidx16, align 1, !dbg !39, !tbaa !13 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !28 |
| %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !28 |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !28, !llvm.loop !40, !prof !59 |
| |
| for.cond.cleanup: |
| ret void, !dbg !29 |
| } |
| |
| ; Function Attrs: norecurse nounwind ssp uwtable |
| define void @unknown(i8* nocapture %A, i8* nocapture readonly %B, i8* nocapture %C, i8* nocapture readonly %D, i8* nocapture readonly %E, i32 %N) local_unnamed_addr #0 !dbg !41 { |
| entry: |
| %cmp28 = icmp sgt i32 %N, 0, !dbg !42 |
| br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !43 |
| |
| ph: |
| br label %for.body |
| |
| for.body: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ] |
| %arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !45 |
| %0 = load i8, i8* %arrayidx, align 1, !dbg !45, !tbaa !13 |
| %arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !46 |
| %1 = load i8, i8* %arrayidx2, align 1, !dbg !46, !tbaa !13 |
| %add = add i8 %1, %0, !dbg !47 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !43 |
| %arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !48 |
| store i8 %add, i8* %arrayidx7, align 1, !dbg !49, !tbaa !13 |
| %arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !50 |
| %2 = load i8, i8* %arrayidx9, align 1, !dbg !50, !tbaa !13 |
| %arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !51 |
| %3 = load i8, i8* %arrayidx12, align 1, !dbg !51, !tbaa !13 |
| %mul = mul i8 %3, %2, !dbg !52 |
| %arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !53 |
| store i8 %mul, i8* %arrayidx16, align 1, !dbg !54, !tbaa !13 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !43 |
| %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !43 |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !43, !llvm.loop !55 |
| |
| for.cond.cleanup: |
| ret void, !dbg !44 |
| } |
| |
| attributes #0 = { norecurse nounwind ssp uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273572) (llvm/trunk 273585)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2) |
| !1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 2} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 3.9.0 (trunk 273572) (llvm/trunk 273585)"} |
| !7 = distinct !DISubprogram(name: "cold", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !2) |
| !9 = !DILocation(line: 2, column: 20, scope: !7) |
| !10 = !DILocation(line: 2, column: 3, scope: !7) |
| !11 = !DILocation(line: 6, column: 1, scope: !7) |
| !12 = !DILocation(line: 3, column: 16, scope: !7) |
| !13 = !{!14, !14, i64 0} |
| !14 = !{!"omnipotent char", !15, i64 0} |
| !15 = !{!"Simple C/C++ TBAA"} |
| !16 = !DILocation(line: 3, column: 23, scope: !7) |
| !17 = !DILocation(line: 3, column: 21, scope: !7) |
| !18 = !DILocation(line: 3, column: 5, scope: !7) |
| !19 = !DILocation(line: 3, column: 14, scope: !7) |
| !20 = !DILocation(line: 4, column: 12, scope: !7) |
| !21 = !DILocation(line: 4, column: 19, scope: !7) |
| !22 = !DILocation(line: 4, column: 17, scope: !7) |
| !23 = !DILocation(line: 4, column: 5, scope: !7) |
| !24 = !DILocation(line: 4, column: 10, scope: !7) |
| !25 = distinct !{!25, !10} |
| !26 = distinct !DISubprogram(name: "hot", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !27 = !DILocation(line: 9, column: 20, scope: !26) |
| !28 = !DILocation(line: 9, column: 3, scope: !26) |
| !29 = !DILocation(line: 13, column: 1, scope: !26) |
| !30 = !DILocation(line: 10, column: 16, scope: !26) |
| !31 = !DILocation(line: 10, column: 23, scope: !26) |
| !32 = !DILocation(line: 10, column: 21, scope: !26) |
| !33 = !DILocation(line: 10, column: 5, scope: !26) |
| !34 = !DILocation(line: 10, column: 14, scope: !26) |
| !35 = !DILocation(line: 11, column: 12, scope: !26) |
| !36 = !DILocation(line: 11, column: 19, scope: !26) |
| !37 = !DILocation(line: 11, column: 17, scope: !26) |
| !38 = !DILocation(line: 11, column: 5, scope: !26) |
| !39 = !DILocation(line: 11, column: 10, scope: !26) |
| !40 = distinct !{!40, !28} |
| !41 = distinct !DISubprogram(name: "unknown", scope: !1, file: !1, line: 15, type: !8, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !42 = !DILocation(line: 16, column: 20, scope: !41) |
| !43 = !DILocation(line: 16, column: 3, scope: !41) |
| !44 = !DILocation(line: 20, column: 1, scope: !41) |
| !45 = !DILocation(line: 17, column: 16, scope: !41) |
| !46 = !DILocation(line: 17, column: 23, scope: !41) |
| !47 = !DILocation(line: 17, column: 21, scope: !41) |
| !48 = !DILocation(line: 17, column: 5, scope: !41) |
| !49 = !DILocation(line: 17, column: 14, scope: !41) |
| !50 = !DILocation(line: 18, column: 12, scope: !41) |
| !51 = !DILocation(line: 18, column: 19, scope: !41) |
| !52 = !DILocation(line: 18, column: 17, scope: !41) |
| !53 = !DILocation(line: 18, column: 5, scope: !41) |
| !54 = !DILocation(line: 18, column: 10, scope: !41) |
| !55 = distinct !{!55, !43} |
| !56 = !{!"function_entry_count", i64 3} |
| !57 = !{!"function_entry_count", i64 50} |
| !58 = !{!"branch_weights", i32 99, i32 1} |
| !59 = !{!"branch_weights", i32 1, i32 99} |