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-rw-r--r--llvm/test/Transforms/LoopVectorize/X86/vect.omp.force.small-tc.ll31
-rw-r--r--llvm/test/Transforms/LoopVectorize/small-loop.ll6
2 files changed, 32 insertions, 5 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/X86/vect.omp.force.small-tc.ll b/llvm/test/Transforms/LoopVectorize/X86/vect.omp.force.small-tc.ll
index 8d139ac7e5a..46fd022af66 100644
--- a/llvm/test/Transforms/LoopVectorize/X86/vect.omp.force.small-tc.ll
+++ b/llvm/test/Transforms/LoopVectorize/X86/vect.omp.force.small-tc.ll
@@ -3,10 +3,11 @@
; CHECK: LV: Loop hints: force=enabled
; CHECK: LV: Loop hints: force=?
+; CHECK: LV: Loop hints: force=?
; No more loops in the module
; CHECK-NOT: LV: Loop hints: force=
-; CHECK: 2 loop-vectorize - Number of loops analyzed for vectorization
-; CHECK: 1 loop-vectorize - Number of loops vectorized
+; CHECK: 3 loop-vectorize - Number of loops analyzed for vectorization
+; CHECK: 2 loop-vectorize - Number of loops vectorized
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-macosx10.8.0"
@@ -71,3 +72,29 @@ for.end:
!3 = !{!3}
+;
+; This loop will be vectorized as the trip count is below the threshold but no
+; scalar iterations are needed.
+;
+define void @vectorized2(float* noalias nocapture %A, float* noalias nocapture readonly %B) {
+entry:
+ br label %for.body
+
+for.body:
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds float, float* %B, i64 %indvars.iv
+ %0 = load float, float* %arrayidx, align 4, !llvm.mem.parallel_loop_access !3
+ %arrayidx2 = getelementptr inbounds float, float* %A, i64 %indvars.iv
+ %1 = load float, float* %arrayidx2, align 4, !llvm.mem.parallel_loop_access !3
+ %add = fadd fast float %0, %1
+ store float %add, float* %arrayidx2, align 4, !llvm.mem.parallel_loop_access !3
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond = icmp eq i64 %indvars.iv.next, 16
+ br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !4
+
+for.end:
+ ret void
+}
+
+!4 = !{!4}
+
diff --git a/llvm/test/Transforms/LoopVectorize/small-loop.ll b/llvm/test/Transforms/LoopVectorize/small-loop.ll
index 9a5dc4aa1b7..378283b464b 100644
--- a/llvm/test/Transforms/LoopVectorize/small-loop.ll
+++ b/llvm/test/Transforms/LoopVectorize/small-loop.ll
@@ -7,7 +7,7 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3
@c = common global [2048 x i32] zeroinitializer, align 16
;CHECK-LABEL: @example1(
-;CHECK-NOT: load <4 x i32>
+;CHECK: load <4 x i32>
;CHECK: ret void
define void @example1() nounwind uwtable ssp {
br label %1
@@ -23,8 +23,8 @@ define void @example1() nounwind uwtable ssp {
store i32 %6, i32* %7, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
- %exitcond = icmp eq i32 %lftr.wideiv, 8 ; <----- A really small trip count.
- br i1 %exitcond, label %8, label %1
+ %exitcond = icmp eq i32 %lftr.wideiv, 8 ; <----- A really small trip count
+ br i1 %exitcond, label %8, label %1 ; w/o scalar iteration overhead.
; <label>:8 ; preds = %1
ret void
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