; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" target triple = "x86_64-apple-macosx10.9.0" ; Make sure we vectorize this loop: ; int foo(float *a, float *b, int n) { ; for (int i=0; i define i32 @foo(float* nocapture %a, float* nocapture %b, i32 %n) nounwind uwtable ssp { entry: %cmp6 = icmp sgt i32 %n, 0, !dbg !6 br i1 %cmp6, label %for.body, label %for.end, !dbg !6 for.body: ; preds = %entry, %for.body %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ], !dbg !7 %arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv, !dbg !7 %0 = load float, float* %arrayidx, align 4, !dbg !7 %mul = fmul float %0, 3.000000e+00, !dbg !7 %arrayidx2 = getelementptr inbounds float, float* %a, i64 %indvars.iv, !dbg !7 store float %mul, float* %arrayidx2, align 4, !dbg !7 %indvars.iv.next = add i64 %indvars.iv, 1, !dbg !7 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !7 %exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !7 br i1 %exitcond, label %for.end, label %for.body, !dbg !7 for.end: ; preds = %for.body, %entry ret i32 undef, !dbg !8 } ; Make sure that we try to vectorize loops with a runtime check if the ; dependency check fails. ; CHECK-LABEL: test_runtime_check ; CHECK: <4 x float> define void @test_runtime_check(float* %a, float %b, i64 %offset, i64 %offset2, i64 %n) { entry: br label %for.body for.body: %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] %ind.sum = add i64 %iv, %offset %arr.idx = getelementptr inbounds float, float* %a, i64 %ind.sum %l1 = load float, float* %arr.idx, align 4 %ind.sum2 = add i64 %iv, %offset2 %arr.idx2 = getelementptr inbounds float, float* %a, i64 %ind.sum2 %l2 = load float, float* %arr.idx2, align 4 %m = fmul fast float %b, %l2 %ad = fadd fast float %l1, %m store float %ad, float* %arr.idx, align 4 %iv.next = add nuw nsw i64 %iv, 1 %exitcond = icmp eq i64 %iv.next, %n br i1 %exitcond, label %loopexit, label %for.body loopexit: ret void } ; CHECK: [[BODY_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}}) !llvm.module.flags = !{!0, !1} !0 = !{i32 2, !"Dwarf Version", i32 4} !1 = !{i32 2, !"Debug Info Version", i32 3} !2 = !{} !3 = !DISubroutineType(types: !2) !4 = !DIFile(filename: "test.cpp", directory: "/tmp") !5 = distinct !DISubprogram(name: "foo", scope: !4, file: !4, line: 99, type: !3, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, variables: !2) !6 = !DILocation(line: 100, column: 1, scope: !5) !7 = !DILocation(line: 101, column: 1, scope: !5) !8 = !DILocation(line: 102, column: 1, scope: !5)