Use vld1 / vst2 for unaligned v2f64 load / store. e.g. Use vld1.16 for 2-byte

aligned address. Based on patch by David Peixotto.

Also use vld1.64 / vst1.64 with 128-bit alignment to take advantage of alignment
hints. rdar://12090772, rdar://12238782


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164089 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 487 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/unaligned_load_store_vector.ll b/test/CodeGen/ARM/unaligned_load_store_vector.ll
new file mode 100644
index 0000000000..25ae651793
--- /dev/null
+++ b/test/CodeGen/ARM/unaligned_load_store_vector.ll
@@ -0,0 +1,487 @@
+;RUN: llc < %s -march=arm -mattr=+v7 -mattr=+neon | FileCheck %s
+
+;ALIGN = 1
+;SIZE  = 64
+;TYPE  = <8 x i8>
+define void @v64_v8i8_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v8i8_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i8>*
+  %vo  = bitcast i8* %po to <8 x i8>*
+;CHECK: vld1.8
+  %v1 = load  <8 x i8>* %vi, align 1
+;CHECK: vst1.8
+  store <8 x i8> %v1, <8 x i8>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 64
+;TYPE  = <4 x i16>
+define void @v64_v4i16_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v4i16_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i16>*
+  %vo  = bitcast i8* %po to <4 x i16>*
+;CHECK: vld1.8
+  %v1 = load  <4 x i16>* %vi, align 1
+;CHECK: vst1.8
+  store <4 x i16> %v1, <4 x i16>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 64
+;TYPE  = <2 x i32>
+define void @v64_v2i32_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2i32_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i32>*
+  %vo  = bitcast i8* %po to <2 x i32>*
+;CHECK: vld1.8
+  %v1 = load  <2 x i32>* %vi, align 1
+;CHECK: vst1.8
+  store <2 x i32> %v1, <2 x i32>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 64
+;TYPE  = <2 x float>
+define void @v64_v2f32_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2f32_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x float>*
+  %vo  = bitcast i8* %po to <2 x float>*
+;CHECK: vld1.8
+  %v1 = load  <2 x float>* %vi, align 1
+;CHECK: vst1.8
+  store <2 x float> %v1, <2 x float>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 128
+;TYPE  = <16 x i8>
+define void @v128_v16i8_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v16i8_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <16 x i8>*
+  %vo  = bitcast i8* %po to <16 x i8>*
+;CHECK: vld1.8
+  %v1 = load  <16 x i8>* %vi, align 1
+;CHECK: vst1.8
+  store <16 x i8> %v1, <16 x i8>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 128
+;TYPE  = <8 x i16>
+define void @v128_v8i16_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v8i16_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i16>*
+  %vo  = bitcast i8* %po to <8 x i16>*
+;CHECK: vld1.8
+  %v1 = load  <8 x i16>* %vi, align 1
+;CHECK: vst1.8
+  store <8 x i16> %v1, <8 x i16>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 128
+;TYPE  = <4 x i32>
+define void @v128_v4i32_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4i32_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i32>*
+  %vo  = bitcast i8* %po to <4 x i32>*
+;CHECK: vld1.8
+  %v1 = load  <4 x i32>* %vi, align 1
+;CHECK: vst1.8
+  store <4 x i32> %v1, <4 x i32>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 128
+;TYPE  = <2 x i64>
+define void @v128_v2i64_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v2i64_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i64>*
+  %vo  = bitcast i8* %po to <2 x i64>*
+;CHECK: vld1.8
+  %v1 = load  <2 x i64>* %vi, align 1
+;CHECK: vst1.8
+  store <2 x i64> %v1, <2 x i64>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 1
+;SIZE  = 128
+;TYPE  = <4 x float>
+define void @v128_v4f32_1(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4f32_1:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x float>*
+  %vo  = bitcast i8* %po to <4 x float>*
+;CHECK: vld1.8
+  %v1 = load  <4 x float>* %vi, align 1
+;CHECK: vst1.8
+  store <4 x float> %v1, <4 x float>* %vo, align 1
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 64
+;TYPE  = <8 x i8>
+define void @v64_v8i8_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v8i8_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i8>*
+  %vo  = bitcast i8* %po to <8 x i8>*
+;CHECK: vld1.16
+  %v1 = load  <8 x i8>* %vi, align 2
+;CHECK: vst1.16
+  store <8 x i8> %v1, <8 x i8>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 64
+;TYPE  = <4 x i16>
+define void @v64_v4i16_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v4i16_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i16>*
+  %vo  = bitcast i8* %po to <4 x i16>*
+;CHECK: vld1.16
+  %v1 = load  <4 x i16>* %vi, align 2
+;CHECK: vst1.16
+  store <4 x i16> %v1, <4 x i16>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 64
+;TYPE  = <2 x i32>
+define void @v64_v2i32_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2i32_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i32>*
+  %vo  = bitcast i8* %po to <2 x i32>*
+;CHECK: vld1.16
+  %v1 = load  <2 x i32>* %vi, align 2
+;CHECK: vst1.16
+  store <2 x i32> %v1, <2 x i32>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 64
+;TYPE  = <2 x float>
+define void @v64_v2f32_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2f32_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x float>*
+  %vo  = bitcast i8* %po to <2 x float>*
+;CHECK: vld1.16
+  %v1 = load  <2 x float>* %vi, align 2
+;CHECK: vst1.16
+  store <2 x float> %v1, <2 x float>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 128
+;TYPE  = <16 x i8>
+define void @v128_v16i8_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v16i8_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <16 x i8>*
+  %vo  = bitcast i8* %po to <16 x i8>*
+;CHECK: vld1.16
+  %v1 = load  <16 x i8>* %vi, align 2
+;CHECK: vst1.16
+  store <16 x i8> %v1, <16 x i8>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 128
+;TYPE  = <8 x i16>
+define void @v128_v8i16_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v8i16_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i16>*
+  %vo  = bitcast i8* %po to <8 x i16>*
+;CHECK: vld1.16
+  %v1 = load  <8 x i16>* %vi, align 2
+;CHECK: vst1.16
+  store <8 x i16> %v1, <8 x i16>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 128
+;TYPE  = <4 x i32>
+define void @v128_v4i32_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4i32_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i32>*
+  %vo  = bitcast i8* %po to <4 x i32>*
+;CHECK: vld1.16
+  %v1 = load  <4 x i32>* %vi, align 2
+;CHECK: vst1.16
+  store <4 x i32> %v1, <4 x i32>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 128
+;TYPE  = <2 x i64>
+define void @v128_v2i64_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v2i64_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i64>*
+  %vo  = bitcast i8* %po to <2 x i64>*
+;CHECK: vld1.16
+  %v1 = load  <2 x i64>* %vi, align 2
+;CHECK: vst1.16
+  store <2 x i64> %v1, <2 x i64>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 2
+;SIZE  = 128
+;TYPE  = <4 x float>
+define void @v128_v4f32_2(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4f32_2:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x float>*
+  %vo  = bitcast i8* %po to <4 x float>*
+;CHECK: vld1.16
+  %v1 = load  <4 x float>* %vi, align 2
+;CHECK: vst1.16
+  store <4 x float> %v1, <4 x float>* %vo, align 2
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 64
+;TYPE  = <8 x i8>
+define void @v64_v8i8_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v8i8_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i8>*
+  %vo  = bitcast i8* %po to <8 x i8>*
+;CHECK: vldr
+  %v1 = load  <8 x i8>* %vi, align 4
+;CHECK: vstr
+  store <8 x i8> %v1, <8 x i8>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 64
+;TYPE  = <4 x i16>
+define void @v64_v4i16_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v4i16_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i16>*
+  %vo  = bitcast i8* %po to <4 x i16>*
+;CHECK: vldr
+  %v1 = load  <4 x i16>* %vi, align 4
+;CHECK: vstr
+  store <4 x i16> %v1, <4 x i16>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 64
+;TYPE  = <2 x i32>
+define void @v64_v2i32_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2i32_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i32>*
+  %vo  = bitcast i8* %po to <2 x i32>*
+;CHECK: vldr
+  %v1 = load  <2 x i32>* %vi, align 4
+;CHECK: vstr
+  store <2 x i32> %v1, <2 x i32>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 64
+;TYPE  = <2 x float>
+define void @v64_v2f32_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v64_v2f32_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x float>*
+  %vo  = bitcast i8* %po to <2 x float>*
+;CHECK: vldr
+  %v1 = load  <2 x float>* %vi, align 4
+;CHECK: vstr
+  store <2 x float> %v1, <2 x float>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 128
+;TYPE  = <16 x i8>
+define void @v128_v16i8_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v16i8_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <16 x i8>*
+  %vo  = bitcast i8* %po to <16 x i8>*
+;CHECK: vld1.32
+  %v1 = load  <16 x i8>* %vi, align 4
+;CHECK: vst1.32
+  store <16 x i8> %v1, <16 x i8>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 128
+;TYPE  = <8 x i16>
+define void @v128_v8i16_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v8i16_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <8 x i16>*
+  %vo  = bitcast i8* %po to <8 x i16>*
+;CHECK: vld1.32
+  %v1 = load  <8 x i16>* %vi, align 4
+;CHECK: vst1.32
+  store <8 x i16> %v1, <8 x i16>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 128
+;TYPE  = <4 x i32>
+define void @v128_v4i32_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4i32_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x i32>*
+  %vo  = bitcast i8* %po to <4 x i32>*
+;CHECK: vld1.32
+  %v1 = load  <4 x i32>* %vi, align 4
+;CHECK: vst1.32
+  store <4 x i32> %v1, <4 x i32>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 128
+;TYPE  = <2 x i64>
+define void @v128_v2i64_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v2i64_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <2 x i64>*
+  %vo  = bitcast i8* %po to <2 x i64>*
+;CHECK: vld1.32
+  %v1 = load  <2 x i64>* %vi, align 4
+;CHECK: vst1.32
+  store <2 x i64> %v1, <2 x i64>* %vo, align 4
+  ret void
+}
+
+
+;ALIGN = 4
+;SIZE  = 128
+;TYPE  = <4 x float>
+define void @v128_v4f32_4(i8* noalias nocapture %out, i8* noalias nocapture %in) nounwind {
+;CHECK: v128_v4f32_4:
+entry:
+  %po = getelementptr i8* %out, i32 0
+  %pi = getelementptr i8* %in,  i32 0
+  %vi  = bitcast i8* %pi to <4 x float>*
+  %vo  = bitcast i8* %po to <4 x float>*
+;CHECK: vld1.32
+  %v1 = load  <4 x float>* %vi, align 4
+;CHECK: vst1.32
+  store <4 x float> %v1, <4 x float>* %vo, align 4
+  ret void
+}
+