1 files changed, 57 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/conditional-assignment.ll b/llvm/test/Transforms/LoopVectorize/conditional-assignment.ll
new file mode 100644
index 00000000000..be6de28b83f
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/conditional-assignment.ll
@@ -0,0 +1,57 @@
+; RUN: opt < %s -enable-cond-stores-vec=false -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
+; RUN: opt < %s -enable-cond-stores-vec=false -passes=loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
+
+; CHECK: remark: source.c:2:8: the cost-model indicates that vectorization is not beneficial
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+; Function Attrs: nounwind ssp uwtable
+define void @conditional_store(i32* noalias nocapture %indices) #0 !dbg !4 {
+entry:
+  br label %for.body, !dbg !10
+
+for.body:                                         ; preds = %for.inc, %entry
+  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
+  %arrayidx = getelementptr inbounds i32, i32* %indices, i64 %indvars.iv, !dbg !12
+  %0 = load i32, i32* %arrayidx, align 4, !dbg !12, !tbaa !14
+  %cmp1 = icmp eq i32 %0, 1024, !dbg !12
+  br i1 %cmp1, label %if.then, label %for.inc, !dbg !12
+
+if.then:                                          ; preds = %for.body
+  store i32 0, i32* %arrayidx, align 4, !dbg !18, !tbaa !14
+  br label %for.inc, !dbg !18
+
+for.inc:                                          ; preds = %for.body, %if.then
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
+  %exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !10
+  br i1 %exitcond, label %for.end, label %for.body, !dbg !10
+
+for.end:                                          ; preds = %for.inc
+  ret void, !dbg !19
+}
+
+attributes #0 = { nounwind }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0", isOptimized: true, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
+!1 = !DIFile(filename: "source.c", directory: ".")
+!2 = !{}
+!4 = distinct !DISubprogram(name: "conditional_store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
+!5 = !DIFile(filename: "source.c", directory: ".")
+!6 = !DISubroutineType(types: !2)
+!7 = !{i32 2, !"Dwarf Version", i32 2}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
+!9 = !{!"clang version 3.6.0"}
+!10 = !DILocation(line: 2, column: 8, scope: !11)
+!11 = distinct !DILexicalBlock(line: 2, column: 3, file: !1, scope: !4)
+!12 = !DILocation(line: 3, column: 9, scope: !13)
+!13 = distinct !DILexicalBlock(line: 3, column: 9, file: !1, scope: !11)
+!14 = !{!15, !15, i64 0}
+!15 = !{!"int", !16, i64 0}
+!16 = !{!"omnipotent char", !17, i64 0}
+!17 = !{!"Simple C/C++ TBAA"}
+!18 = !DILocation(line: 3, column: 29, scope: !13)
+!19 = !DILocation(line: 4, column: 1, scope: !4)