201 lines
10 KiB
LLVM
201 lines
10 KiB
LLVM
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; RUN: opt -S -loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s
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; RUN: opt -S -passes=loop-vectorize -pass-remarks-analysis=loop-vectorize -pass-remarks-with-hotness < %s 2>&1 | FileCheck %s
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; 1 void cold(char *A, char *B, char *C, char *D, char *E, int N) {
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; 2 for(int i = 0; i < N; i++) {
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; 3 A[i + 1] = A[i] + B[i];
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; 4 C[i] = D[i] * E[i];
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; 5 }
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; 6 }
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; 7
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; 8 void hot(char *A, char *B, char *C, char *D, char *E, int N) {
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; 9 for(int i = 0; i < N; i++) {
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; 10 A[i + 1] = A[i] + B[i];
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; 11 C[i] = D[i] * E[i];
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; 12 }
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; 13 }
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; 14
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; 15 void unknown(char *A, char *B, char *C, char *D, char *E, int N) {
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; 16 for(int i = 0; i < N; i++) {
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; 17 A[i + 1] = A[i] + B[i];
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; 18 C[i] = D[i] * E[i];
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; 19 }
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; 20 }
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; 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)
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; 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)
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; 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{{$}}
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; ModuleID = '/tmp/s.c'
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source_filename = "/tmp/s.c"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: norecurse nounwind ssp uwtable
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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 {
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entry:
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%cmp28 = icmp sgt i32 %N, 0, !dbg !9
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br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !10, !prof !58
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !12
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%0 = load i8, i8* %arrayidx, align 1, !dbg !12, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !16
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !16, !tbaa !13
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%add = add i8 %1, %0, !dbg !17
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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%arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !18
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store i8 %add, i8* %arrayidx7, align 1, !dbg !19, !tbaa !13
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%arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !20
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%2 = load i8, i8* %arrayidx9, align 1, !dbg !20, !tbaa !13
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%arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !21
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%3 = load i8, i8* %arrayidx12, align 1, !dbg !21, !tbaa !13
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%mul = mul i8 %3, %2, !dbg !22
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%arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !23
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store i8 %mul, i8* %arrayidx16, align 1, !dbg !24, !tbaa !13
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !10
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !10, !llvm.loop !25, !prof !59
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for.cond.cleanup:
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ret void, !dbg !11
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}
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; Function Attrs: norecurse nounwind ssp uwtable
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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 {
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entry:
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%cmp28 = icmp sgt i32 %N, 0, !dbg !27
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br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !28, !prof !58
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !30
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%0 = load i8, i8* %arrayidx, align 1, !dbg !30, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !31
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !31, !tbaa !13
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%add = add i8 %1, %0, !dbg !32
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !28
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%arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !33
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store i8 %add, i8* %arrayidx7, align 1, !dbg !34, !tbaa !13
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%arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !35
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%2 = load i8, i8* %arrayidx9, align 1, !dbg !35, !tbaa !13
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%arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !36
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%3 = load i8, i8* %arrayidx12, align 1, !dbg !36, !tbaa !13
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%mul = mul i8 %3, %2, !dbg !37
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%arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !38
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store i8 %mul, i8* %arrayidx16, align 1, !dbg !39, !tbaa !13
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !28
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !28
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !28, !llvm.loop !40, !prof !59
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for.cond.cleanup:
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ret void, !dbg !29
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}
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; Function Attrs: norecurse nounwind ssp uwtable
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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 {
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entry:
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%cmp28 = icmp sgt i32 %N, 0, !dbg !42
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br i1 %cmp28, label %ph, label %for.cond.cleanup, !dbg !43
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ph:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %ph ]
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %indvars.iv, !dbg !45
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%0 = load i8, i8* %arrayidx, align 1, !dbg !45, !tbaa !13
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%arrayidx2 = getelementptr inbounds i8, i8* %B, i64 %indvars.iv, !dbg !46
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%1 = load i8, i8* %arrayidx2, align 1, !dbg !46, !tbaa !13
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%add = add i8 %1, %0, !dbg !47
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !43
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%arrayidx7 = getelementptr inbounds i8, i8* %A, i64 %indvars.iv.next, !dbg !48
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store i8 %add, i8* %arrayidx7, align 1, !dbg !49, !tbaa !13
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%arrayidx9 = getelementptr inbounds i8, i8* %D, i64 %indvars.iv, !dbg !50
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%2 = load i8, i8* %arrayidx9, align 1, !dbg !50, !tbaa !13
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%arrayidx12 = getelementptr inbounds i8, i8* %E, i64 %indvars.iv, !dbg !51
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%3 = load i8, i8* %arrayidx12, align 1, !dbg !51, !tbaa !13
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%mul = mul i8 %3, %2, !dbg !52
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%arrayidx16 = getelementptr inbounds i8, i8* %C, i64 %indvars.iv, !dbg !53
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store i8 %mul, i8* %arrayidx16, align 1, !dbg !54, !tbaa !13
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !43
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%exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !43
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !43, !llvm.loop !55
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for.cond.cleanup:
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ret void, !dbg !44
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}
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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" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!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)
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!1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 2}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 3.9.0 (trunk 273572) (llvm/trunk 273585)"}
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!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)
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!8 = !DISubroutineType(types: !2)
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!9 = !DILocation(line: 2, column: 20, scope: !7)
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!10 = !DILocation(line: 2, column: 3, scope: !7)
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!11 = !DILocation(line: 6, column: 1, scope: !7)
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!12 = !DILocation(line: 3, column: 16, scope: !7)
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!13 = !{!14, !14, i64 0}
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!14 = !{!"omnipotent char", !15, i64 0}
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!15 = !{!"Simple C/C++ TBAA"}
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!16 = !DILocation(line: 3, column: 23, scope: !7)
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!17 = !DILocation(line: 3, column: 21, scope: !7)
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!18 = !DILocation(line: 3, column: 5, scope: !7)
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!19 = !DILocation(line: 3, column: 14, scope: !7)
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!20 = !DILocation(line: 4, column: 12, scope: !7)
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!21 = !DILocation(line: 4, column: 19, scope: !7)
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!22 = !DILocation(line: 4, column: 17, scope: !7)
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!23 = !DILocation(line: 4, column: 5, scope: !7)
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!24 = !DILocation(line: 4, column: 10, scope: !7)
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!25 = distinct !{!25, !10}
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!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)
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!27 = !DILocation(line: 9, column: 20, scope: !26)
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!28 = !DILocation(line: 9, column: 3, scope: !26)
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!29 = !DILocation(line: 13, column: 1, scope: !26)
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!30 = !DILocation(line: 10, column: 16, scope: !26)
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!31 = !DILocation(line: 10, column: 23, scope: !26)
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!32 = !DILocation(line: 10, column: 21, scope: !26)
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!33 = !DILocation(line: 10, column: 5, scope: !26)
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!34 = !DILocation(line: 10, column: 14, scope: !26)
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!35 = !DILocation(line: 11, column: 12, scope: !26)
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!36 = !DILocation(line: 11, column: 19, scope: !26)
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!37 = !DILocation(line: 11, column: 17, scope: !26)
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!38 = !DILocation(line: 11, column: 5, scope: !26)
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!39 = !DILocation(line: 11, column: 10, scope: !26)
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!40 = distinct !{!40, !28}
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!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)
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!42 = !DILocation(line: 16, column: 20, scope: !41)
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!43 = !DILocation(line: 16, column: 3, scope: !41)
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!44 = !DILocation(line: 20, column: 1, scope: !41)
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!45 = !DILocation(line: 17, column: 16, scope: !41)
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!46 = !DILocation(line: 17, column: 23, scope: !41)
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!47 = !DILocation(line: 17, column: 21, scope: !41)
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!48 = !DILocation(line: 17, column: 5, scope: !41)
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!49 = !DILocation(line: 17, column: 14, scope: !41)
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!50 = !DILocation(line: 18, column: 12, scope: !41)
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!51 = !DILocation(line: 18, column: 19, scope: !41)
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!52 = !DILocation(line: 18, column: 17, scope: !41)
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!53 = !DILocation(line: 18, column: 5, scope: !41)
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!54 = !DILocation(line: 18, column: 10, scope: !41)
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!55 = distinct !{!55, !43}
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!56 = !{!"function_entry_count", i64 3}
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!57 = !{!"function_entry_count", i64 50}
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!58 = !{!"branch_weights", i32 99, i32 1}
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!59 = !{!"branch_weights", i32 1, i32 99}
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