1 files changed, 113 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/X86/vectorization-remarks-profitable.ll b/test/Transforms/LoopVectorize/X86/vectorization-remarks-profitable.ll
new file mode 100644
index 0000000000000..df8c668f1262e
--- /dev/null
+++ b/test/Transforms/LoopVectorize/X86/vectorization-remarks-profitable.ll
@@ -0,0 +1,113 @@
+; RUN: opt < %s -loop-vectorize -pass-remarks-analysis='loop-vectorize' -mtriple=x86_64-unknown-linux -S 2>&1 | FileCheck %s
+
+; Verify analysis remarks are generated when interleaving is not beneficial.
+; CHECK: remark: vectorization-remarks-profitable.c:5:17: the cost-model indicates that vectorization is not beneficial
+; CHECK: remark: vectorization-remarks-profitable.c:5:17: the cost-model indicates that interleaving is not beneficial and is explicitly disabled or interleave count is set to 1
+; CHECK: remark: vectorization-remarks-profitable.c:12:17: the cost-model indicates that vectorization is not beneficial
+; CHECK: remark: vectorization-remarks-profitable.c:12:17: the cost-model indicates that interleaving is not beneficial
+
+; First loop.
+;  #pragma clang loop interleave(disable) unroll(disable)
+;  for(int i = 0; i < n; i++) {
+;    out[i] = *in[i];
+;  }
+
+; Second loop.
+;  #pragma clang loop unroll(disable)
+;  for(int i = 0; i < n; i++) {
+;    out[i] = *in[i];
+;  }
+
+; ModuleID = 'vectorization-remarks-profitable.ll'
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.10.0"
+
+; Function Attrs: nounwind uwtable
+define void @do_not_interleave(float** noalias nocapture readonly %in, float* noalias nocapture %out, i32 %size) #0 !dbg !4 {
+entry:
+  %cmp.4 = icmp eq i32 %size, 0, !dbg !10
+  br i1 %cmp.4, label %for.end, label %for.body.preheader, !dbg !11
+
+for.body.preheader:                               ; preds = %entry
+  br label %for.body, !dbg !12
+
+for.body:                                         ; preds = %for.body.preheader, %for.body
+  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
+  %arrayidx = getelementptr inbounds float*, float** %in, i64 %indvars.iv, !dbg !12
+  %0 = bitcast float** %arrayidx to i32**, !dbg !12
+  %1 = load i32*, i32** %0, align 8, !dbg !12
+  %2 = load i32, i32* %1, align 4, !dbg !13
+  %arrayidx2 = getelementptr inbounds float, float* %out, i64 %indvars.iv, !dbg !14
+  %3 = bitcast float* %arrayidx2 to i32*, !dbg !15
+  store i32 %2, i32* %3, align 4, !dbg !15
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !11
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !11
+  %exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !11
+  br i1 %exitcond, label %for.end.loopexit, label %for.body, !dbg !11, !llvm.loop !16
+
+for.end.loopexit:                                 ; preds = %for.body
+  br label %for.end, !dbg !19
+
+for.end:                                          ; preds = %for.end.loopexit, %entry
+  ret void, !dbg !19
+}
+
+; Function Attrs: nounwind uwtable
+define void @interleave_not_profitable(float** noalias nocapture readonly %in, float* noalias nocapture %out, i32 %size) #0 !dbg !6 {
+entry:
+  %cmp.4 = icmp eq i32 %size, 0, !dbg !20
+  br i1 %cmp.4, label %for.end, label %for.body, !dbg !21
+
+for.body:                                         ; preds = %entry, %for.body
+  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
+  %arrayidx = getelementptr inbounds float*, float** %in, i64 %indvars.iv, !dbg !22
+  %0 = bitcast float** %arrayidx to i32**, !dbg !22
+  %1 = load i32*, i32** %0, align 8, !dbg !22
+  %2 = load i32, i32* %1, align 4, !dbg !23
+  %arrayidx2 = getelementptr inbounds float, float* %out, i64 %indvars.iv, !dbg !24
+  %3 = bitcast float* %arrayidx2 to i32*, !dbg !25
+  store i32 %2, i32* %3, align 4, !dbg !25
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !21
+  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !21
+  %exitcond = icmp eq i32 %lftr.wideiv, %size, !dbg !21
+  br i1 %exitcond, label %for.end, label %for.body, !dbg !21, !llvm.loop !26
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void, !dbg !27
+}
+
+attributes #0 = { nounwind 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-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 250016)", isOptimized: false, runtimeVersion: 0, emissionKind: 2, enums: !2, subprograms: !3)
+!1 = !DIFile(filename: "vectorization-remarks-profitable.c", directory: "")
+!2 = !{}
+!3 = !{!4, !6}
+!4 = distinct !DISubprogram(name: "do_not_interleave", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!5 = !DISubroutineType(types: !2)
+!6 = distinct !DISubprogram(name: "interleave_not_profitable", scope: !1, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!7 = !{i32 2, !"Dwarf Version", i32 4}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
+!9 = !{!"clang version 3.8.0 (trunk 250016)"}
+!10 = !DILocation(line: 4, column: 23, scope: !4)
+!11 = !DILocation(line: 4, column: 3, scope: !4)
+!12 = !DILocation(line: 5, column: 17, scope: !4)
+!13 = !DILocation(line: 5, column: 16, scope: !4)
+!14 = !DILocation(line: 5, column: 7, scope: !4)
+!15 = !DILocation(line: 5, column: 14, scope: !4)
+!16 = distinct !{!16, !17, !18}
+!17 = !{!"llvm.loop.interleave.count", i32 1}
+!18 = !{!"llvm.loop.unroll.disable"}
+!19 = !DILocation(line: 6, column: 1, scope: !4)
+!20 = !DILocation(line: 11, column: 23, scope: !6)
+!21 = !DILocation(line: 11, column: 3, scope: !6)
+!22 = !DILocation(line: 12, column: 17, scope: !6)
+!23 = !DILocation(line: 12, column: 16, scope: !6)
+!24 = !DILocation(line: 12, column: 7, scope: !6)
+!25 = !DILocation(line: 12, column: 14, scope: !6)
+!26 = distinct !{!26, !18}
+!27 = !DILocation(line: 13, column: 1, scope: !6)
+