[LoopVectorize] Precommit tests for D62510. NFC
llvm-svn: 362060
diff --git a/llvm/test/Transforms/LoopVectorize/fneg.ll b/llvm/test/Transforms/LoopVectorize/fneg.ll
new file mode 100644
index 0000000..8e5e2aa
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/fneg.ll
@@ -0,0 +1,35 @@
+; RUN: opt %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s
+
+define void @foo(float* %a, i64 %n) {
+; CHECK: vector.body:
+; CHECK: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* {{.*}}, align 4
+; CHECK-NEXT: [[TMP4:%.*]] = extractelement <4 x float> [[WIDE_LOAD]], i32 0
+; CHECK-NEXT: [[TMP5:%.*]] = fneg float [[TMP4]]
+; CHECK-NEXT: [[TMP6:%.*]] = extractelement <4 x float> [[WIDE_LOAD]], i32 1
+; CHECK-NEXT: [[TMP7:%.*]] = fneg float [[TMP6]]
+; CHECK-NEXT: [[TMP8:%.*]] = extractelement <4 x float> [[WIDE_LOAD]], i32 2
+; CHECK-NEXT: [[TMP9:%.*]] = fneg float [[TMP8]]
+; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x float> [[WIDE_LOAD]], i32 3
+; CHECK-NEXT: [[TMP11:%.*]] = fneg float [[TMP10]]
+; CHECK-NEXT: [[TMP12:%.*]] = insertelement <4 x float> undef, float [[TMP5]], i32 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x float> [[TMP12]], float [[TMP7]], i32 1
+; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x float> [[TMP13]], float [[TMP9]], i32 2
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x float> [[TMP14]], float [[TMP11]], i32 3
+; CHECK: store <4 x float> [[TMP15]], <4 x float>* {{.*}}, align 4
+;
+entry:
+ br label %for.body
+
+for.body:
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds float, float* %a, i64 %indvars.iv
+ %0 = load float, float* %arrayidx, align 4
+ %sub = fneg float %0
+ store float %sub, float* %arrayidx, align 4
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %cmp = icmp eq i64 %indvars.iv.next, %n
+ br i1 %cmp, label %for.exit, label %for.body
+
+for.exit:
+ ret void
+}