diff options
Diffstat (limited to 'test/Transforms/LoopVectorize/no_switch.ll')
-rw-r--r-- | test/Transforms/LoopVectorize/no_switch.ll | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/no_switch.ll b/test/Transforms/LoopVectorize/no_switch.ll new file mode 100644 index 0000000000..52b42850f4 --- /dev/null +++ b/test/Transforms/LoopVectorize/no_switch.ll @@ -0,0 +1,85 @@ +; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s + +; CHECK: remark: source.cpp:4:5: loop not vectorized: loop contains a switch statement +; CHECK: remark: source.cpp:4:5: loop not vectorized: vectorization is explicitly enabled with width 4 + +; CHECK: _Z11test_switchPii +; CHECK-NOT: x i32> +; CHECK: ret + +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" + +; Function Attrs: nounwind optsize ssp uwtable +define void @_Z11test_switchPii(i32* nocapture %A, i32 %Length) #0 { +entry: + %cmp18 = icmp sgt i32 %Length, 0, !dbg !10 + br i1 %cmp18, label %for.body.preheader, label %for.end, !dbg !10, !llvm.loop !12 + +for.body.preheader: ; preds = %entry + br label %for.body, !dbg !14 + +for.body: ; preds = %for.body.preheader, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %for.body.preheader ] + %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv, !dbg !14 + %0 = load i32* %arrayidx, align 4, !dbg !14, !tbaa !16 + switch i32 %0, label %for.inc [ + i32 0, label %sw.bb + i32 1, label %sw.bb3 + ], !dbg !14 + +sw.bb: ; preds = %for.body + %1 = trunc i64 %indvars.iv to i32, !dbg !20 + %mul = shl nsw i32 %1, 1, !dbg !20 + br label %for.inc, !dbg !22 + +sw.bb3: ; preds = %for.body + %2 = trunc i64 %indvars.iv to i32, !dbg !23 + store i32 %2, i32* %arrayidx, align 4, !dbg !23, !tbaa !16 + br label %for.inc, !dbg !23 + +for.inc: ; preds = %sw.bb3, %for.body, %sw.bb + %storemerge = phi i32 [ %mul, %sw.bb ], [ 0, %for.body ], [ 0, %sw.bb3 ] + store i32 %storemerge, i32* %arrayidx, align 4, !dbg !20, !tbaa !16 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !10 + %exitcond = icmp eq i32 %lftr.wideiv, %Length, !dbg !10 + br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !10, !llvm.loop !12 + +for.end.loopexit: ; preds = %for.inc + br label %for.end + +for.end: ; preds = %for.end.loopexit, %entry + ret void, !dbg !24 +} + +attributes #0 = { nounwind } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!7, !8} +!llvm.ident = !{!9} + +!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} +!1 = metadata !{metadata !"source.cpp", metadata !"."} +!2 = metadata !{} +!3 = metadata !{metadata !4} +!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} +!5 = metadata !{i32 786473, metadata !1} +!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} +!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 2} +!8 = metadata !{i32 2, metadata !"Debug Info Version", i32 1} +!9 = metadata !{metadata !"clang version 3.5.0"} +!10 = metadata !{i32 3, i32 8, metadata !11, null} +!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 3, i32 3, i32 0, i32 0} +!12 = metadata !{metadata !12, metadata !13, metadata !13} +!13 = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true} +!14 = metadata !{i32 4, i32 5, metadata !15, null} +!15 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 36, i32 0, i32 1} +!16 = metadata !{metadata !17, metadata !17, i64 0} +!17 = metadata !{metadata !"int", metadata !18, i64 0} +!18 = metadata !{metadata !"omnipotent char", metadata !19, i64 0} +!19 = metadata !{metadata !"Simple C/C++ TBAA"} +!20 = metadata !{i32 6, i32 7, metadata !21, null} +!21 = metadata !{i32 786443, metadata !1, metadata !15, i32 4, i32 18, i32 0, i32 2} +!22 = metadata !{i32 7, i32 5, metadata !21, null} +!23 = metadata !{i32 9, i32 7, metadata !21, null} +!24 = metadata !{i32 14, i32 1, metadata !4, null} |