mirror of
https://github.com/c64scene-ar/llvm-6502.git
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842a06e8dd
When the cost model determines vectorization is not possible/profitable these remarks print an analysis of that decision. Note that in selectVectorizationFactor() we can assume that OptForSize and ForceVectorization are mutually exclusive. Reviewed by Arnold Schwaighofer git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214599 91177308-0d34-0410-b5e6-96231b3b80d8
59 lines
2.9 KiB
LLVM
59 lines
2.9 KiB
LLVM
; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
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; CHECK: remark: source.c:2:8: loop not vectorized: store that is conditionally executed prevents vectorization
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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; Function Attrs: nounwind ssp uwtable
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define void @conditional_store(i32* noalias nocapture %indices) #0 {
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entry:
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br label %for.body, !dbg !10
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for.body: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
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%arrayidx = getelementptr inbounds i32* %indices, i64 %indvars.iv, !dbg !12
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%0 = load i32* %arrayidx, align 4, !dbg !12, !tbaa !14
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%cmp1 = icmp eq i32 %0, 1024, !dbg !12
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br i1 %cmp1, label %if.then, label %for.inc, !dbg !12
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if.then: ; preds = %for.body
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store i32 0, i32* %arrayidx, align 4, !dbg !18, !tbaa !14
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br label %for.inc, !dbg !18
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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%exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !10
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br i1 %exitcond, label %for.end, label %for.body, !dbg !10
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for.end: ; preds = %for.inc
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ret void, !dbg !19
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}
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attributes #0 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2}
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!1 = metadata !{metadata !"source.c", metadata !"."}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"conditional_store", metadata !"conditional_store", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*)* @conditional_store, null, null, metadata !2, i32 1}
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!5 = metadata !{i32 786473, metadata !1}
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!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null}
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!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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!8 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
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!9 = metadata !{metadata !"clang version 3.6.0"}
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!10 = metadata !{i32 2, i32 8, metadata !11, null}
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!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 2, i32 3, i32 0, i32 0}
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!12 = metadata !{i32 3, i32 9, metadata !13, null}
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!13 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 9, i32 0, i32 1}
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!14 = metadata !{metadata !15, metadata !15, i64 0}
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!15 = metadata !{metadata !"int", metadata !16, i64 0}
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!16 = metadata !{metadata !"omnipotent char", metadata !17, i64 0}
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!17 = metadata !{metadata !"Simple C/C++ TBAA"}
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!18 = metadata !{i32 3, i32 29, metadata !13, null}
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!19 = metadata !{i32 4, i32 1, metadata !4, null}
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