-; RUN: opt < %s -loop-vectorize -force-vector-width=4 -dce -instcombine -licm -S | FileCheck %s
+; 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"
; a[i] = b[i] * 3;
; }
+;CHECK-LABEL: define i32 @foo
+;CHECK: for.body.preheader:
+;CHECK: br i1 %cmp.zero, label %scalar.ph, label %vector.memcheck, !dbg [[BODY_LOC:![0-9]+]]
+;CHECK: vector.memcheck:
+;CHECK: br i1 %memcheck.conflict, label %scalar.ph, label %vector.ph, !dbg [[BODY_LOC]]
;CHECK: load <4 x float>
define i32 @foo(float* nocapture %a, float* nocapture %b, i32 %n) nounwind uwtable ssp {
entry:
- %cmp6 = icmp sgt i32 %n, 0
- br i1 %cmp6, label %for.body, label %for.end
+ %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 ]
- %arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv
- %0 = load float* %arrayidx, align 4, !tbaa !0
- %mul = fmul float %0, 3.000000e+00
- %arrayidx2 = getelementptr inbounds float* %a, i64 %indvars.iv
- store float %mul, float* %arrayidx2, align 4, !tbaa !0
- %indvars.iv.next = add i64 %indvars.iv, 1
- %lftr.wideiv = trunc i64 %indvars.iv.next to i32
- %exitcond = icmp eq i32 %lftr.wideiv, %n
- br i1 %exitcond, label %for.end, label %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
+ ret i32 undef, !dbg !8
}
-!0 = metadata !{metadata !"float", metadata !1}
-!1 = metadata !{metadata !"omnipotent char", metadata !2}
-!2 = metadata !{metadata !"Simple C/C++ TBAA"}
+; 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)