1; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s 2 3; CHECK: remark: source.c:2:8: loop not vectorized: store that is conditionally executed prevents vectorization 4 5target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 6target triple = "x86_64-apple-macosx10.9.0" 7 8; Function Attrs: nounwind ssp uwtable 9define void @conditional_store(i32* noalias nocapture %indices) #0 { 10entry: 11 br label %for.body, !dbg !10 12 13for.body: ; preds = %for.inc, %entry 14 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ] 15 %arrayidx = getelementptr inbounds i32* %indices, i64 %indvars.iv, !dbg !12 16 %0 = load i32* %arrayidx, align 4, !dbg !12, !tbaa !14 17 %cmp1 = icmp eq i32 %0, 1024, !dbg !12 18 br i1 %cmp1, label %if.then, label %for.inc, !dbg !12 19 20if.then: ; preds = %for.body 21 store i32 0, i32* %arrayidx, align 4, !dbg !18, !tbaa !14 22 br label %for.inc, !dbg !18 23 24for.inc: ; preds = %for.body, %if.then 25 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10 26 %exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !10 27 br i1 %exitcond, label %for.end, label %for.body, !dbg !10 28 29for.end: ; preds = %for.inc 30 ret void, !dbg !19 31} 32 33attributes #0 = { nounwind } 34 35!llvm.dbg.cu = !{!0} 36!llvm.module.flags = !{!7, !8} 37!llvm.ident = !{!9} 38 39!0 = !{!"0x11\0012\00clang version 3.6.0\001\00\000\00\002", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] 40!1 = !{!"source.c", !"."} 41!2 = !{} 42!3 = !{!4} 43!4 = !{!"0x2e\00conditional_store\00conditional_store\00\001\000\001\000\006\00256\001\001", !1, !5, !6, null, void (i32*)* @conditional_store, null, null, !2} ; [ DW_TAG_subprogram ] 44!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] 45!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !2, null, null, null} ; [ DW_TAG_subroutine_type ] 46!7 = !{i32 2, !"Dwarf Version", i32 2} 47!8 = !{i32 2, !"Debug Info Version", i32 2} 48!9 = !{!"clang version 3.6.0"} 49!10 = !MDLocation(line: 2, column: 8, scope: !11) 50!11 = !{!"0xb\002\003\000", !1, !4} ; [ DW_TAG_lexical_block ] 51!12 = !MDLocation(line: 3, column: 9, scope: !13) 52!13 = !{!"0xb\003\009\000", !1, !11} ; [ DW_TAG_lexical_block ] 53!14 = !{!15, !15, i64 0} 54!15 = !{!"int", !16, i64 0} 55!16 = !{!"omnipotent char", !17, i64 0} 56!17 = !{!"Simple C/C++ TBAA"} 57!18 = !MDLocation(line: 3, column: 29, scope: !13) 58!19 = !MDLocation(line: 4, column: 1, scope: !4) 59