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a2029fa58e
In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
201 lines
10 KiB
LLVM
201 lines
10 KiB
LLVM
; 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" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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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