mirror of
https://github.com/c64scene-ar/llvm-6502.git
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77f03040d5
This patch modifies the existing DiagnosticInfo system to create a generic base class that is inherited to produce diagnostic-based warnings. This is used by the loop vectorizer to trigger a warning when vectorization is forced and fails. Several tests have been added to verify this behavior. Reviewed by: Arnold Schwaighofer git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213110 91177308-0d34-0410-b5e6-96231b3b80d8
87 lines
4.2 KiB
LLVM
87 lines
4.2 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
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; CHECK: remark: source.cpp:4:5: loop not vectorized: loop contains a switch statement
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; CHECK: remark: source.cpp:4:5: loop not vectorized: vectorization is explicitly enabled with width 4
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; CHECK: warning: source.cpp:4:5: loop not vectorized: failed explicitly specified loop vectorization
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; CHECK: _Z11test_switchPii
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; CHECK-NOT: x i32>
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; CHECK: ret
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: nounwind optsize ssp uwtable
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define void @_Z11test_switchPii(i32* nocapture %A, i32 %Length) #0 {
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entry:
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%cmp18 = icmp sgt i32 %Length, 0, !dbg !10
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br i1 %cmp18, label %for.body.preheader, label %for.end, !dbg !10, !llvm.loop !12
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !14
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for.body: ; preds = %for.body.preheader, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %for.body.preheader ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !14
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%0 = load i32* %arrayidx, align 4, !dbg !14, !tbaa !16
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switch i32 %0, label %for.inc [
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i32 0, label %sw.bb
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i32 1, label %sw.bb3
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], !dbg !14
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sw.bb: ; preds = %for.body
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%1 = trunc i64 %indvars.iv to i32, !dbg !20
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%mul = shl nsw i32 %1, 1, !dbg !20
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br label %for.inc, !dbg !22
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sw.bb3: ; preds = %for.body
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%2 = trunc i64 %indvars.iv to i32, !dbg !23
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store i32 %2, i32* %arrayidx, align 4, !dbg !23, !tbaa !16
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br label %for.inc, !dbg !23
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for.inc: ; preds = %sw.bb3, %for.body, %sw.bb
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%storemerge = phi i32 [ %mul, %sw.bb ], [ 0, %for.body ], [ 0, %sw.bb3 ]
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store i32 %storemerge, i32* %arrayidx, align 4, !dbg !20, !tbaa !16
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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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, %Length, !dbg !10
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br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !10, !llvm.loop !12
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for.end.loopexit: ; preds = %for.inc
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void, !dbg !24
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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 4, metadata !"clang version 3.5.0", 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.cpp", 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 !"test_switch", metadata !"test_switch", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*, i32)* @_Z11test_switchPii, 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 3.5.0"}
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!10 = metadata !{i32 3, i32 8, metadata !11, null}
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!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 3, i32 3, i32 0, i32 0}
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!12 = metadata !{metadata !12, metadata !13, metadata !13}
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!13 = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
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!14 = metadata !{i32 4, i32 5, metadata !15, null}
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!15 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 36, i32 0, i32 1}
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!16 = metadata !{metadata !17, metadata !17, i64 0}
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!17 = metadata !{metadata !"int", metadata !18, i64 0}
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!18 = metadata !{metadata !"omnipotent char", metadata !19, i64 0}
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!19 = metadata !{metadata !"Simple C/C++ TBAA"}
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!20 = metadata !{i32 6, i32 7, metadata !21, null}
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!21 = metadata !{i32 786443, metadata !1, metadata !15, i32 4, i32 18, i32 0, i32 2}
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!22 = metadata !{i32 7, i32 5, metadata !21, null}
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!23 = metadata !{i32 9, i32 7, metadata !21, null}
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!24 = metadata !{i32 14, i32 1, metadata !4, null}
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