[X86][FastIsel] Teach how to select vector load instructions.

This patch teaches fast-isel how to select 128-bit vector load instructions.
Added test CodeGen/X86/fast-isel-vecload.ll

Differential Revision: http://reviews.llvm.org/D8605

llvm-svn: 233270

1 files changed, 185 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/fast-isel-vecload.ll b/llvm/test/CodeGen/X86/fast-isel-vecload.ll
new file mode 100644
index 00000000000..48eebf526f1
--- /dev/null
+++ b/llvm/test/CodeGen/X86/fast-isel-vecload.ll
@@ -0,0 +1,185 @@
+; RUN: llc -O0 -fast-isel -fast-isel-abort=1 -mtriple=x86_64-unknown-unknown -mattr=+sse2 < %s | FileCheck %s --check-prefix=SSE --check-prefix=ALL
+; RUN: llc -O0 -fast-isel -fast-isel-abort=1 -mtriple=x86_64-unknown-unknown -mattr=+avx < %s | FileCheck %s --check-prefix=AVX --check-prefix=ALL
+
+; Verify that fast-isel knows how to select aligned/unaligned vector loads.
+; Also verify that the selected load instruction is in the correct domain.
+
+define <16 x i8> @test_v16i8(<16 x i8>* %V) {
+; ALL-LABEL: test_v16i8:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <16 x i8>, <16 x i8>* %V, align 16
+  ret <16 x i8> %0
+}
+
+define <8 x i16> @test_v8i16(<8 x i16>* %V) {
+; ALL-LABEL: test_v8i16:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <8 x i16>, <8 x i16>* %V, align 16
+  ret <8 x i16> %0
+}
+
+define <4 x i32> @test_v4i32(<4 x i32>* %V) {
+; ALL-LABEL: test_v4i32:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x i32>, <4 x i32>* %V, align 16
+  ret <4 x i32> %0
+}
+
+define <2 x i64> @test_v2i64(<2 x i64>* %V) {
+; ALL-LABEL: test_v2i64:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x i64>, <2 x i64>* %V, align 16
+  ret <2 x i64> %0
+}
+
+define <16 x i8> @test_v16i8_unaligned(<16 x i8>* %V) {
+; ALL-LABEL: test_v16i8_unaligned:
+; SSE: movdqu  (%rdi), %xmm0
+; AVX: vmovdqu  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <16 x i8>, <16 x i8>* %V, align 4
+  ret <16 x i8> %0
+}
+
+define <8 x i16> @test_v8i16_unaligned(<8 x i16>* %V) {
+; ALL-LABEL: test_v8i16_unaligned:
+; SSE: movdqu  (%rdi), %xmm0
+; AVX: vmovdqu  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <8 x i16>, <8 x i16>* %V, align 4
+  ret <8 x i16> %0
+}
+
+define <4 x i32> @test_v4i32_unaligned(<4 x i32>* %V) {
+; ALL-LABEL: test_v4i32_unaligned:
+; SSE: movdqu  (%rdi), %xmm0
+; AVX: vmovdqu  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x i32>, <4 x i32>* %V, align 4
+  ret <4 x i32> %0
+}
+
+define <2 x i64> @test_v2i64_unaligned(<2 x i64>* %V) {
+; ALL-LABEL: test_v2i64_unaligned:
+; SSE: movdqu  (%rdi), %xmm0
+; AVX: vmovdqu  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x i64>, <2 x i64>* %V, align 4
+  ret <2 x i64> %0
+}
+
+define <4 x float> @test_v4f32(<4 x float>* %V) {
+; ALL-LABEL: test_v4f32:
+; SSE: movaps  (%rdi), %xmm0
+; AVX: vmovaps  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x float>, <4 x float>* %V, align 16
+  ret <4 x float> %0
+}
+
+define <2 x double> @test_v2f64(<2 x double>* %V) {
+; ALL-LABEL: test_v2f64:
+; SSE: movapd  (%rdi), %xmm0
+; AVX: vmovapd  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x double>, <2 x double>* %V, align 16
+  ret <2 x double> %0
+}
+
+define <4 x float> @test_v4f32_unaligned(<4 x float>* %V) {
+; ALL-LABEL: test_v4f32_unaligned:
+; SSE: movups  (%rdi), %xmm0
+; AVX: vmovups  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x float>, <4 x float>* %V, align 4
+  ret <4 x float> %0
+}
+
+define <2 x double> @test_v2f64_unaligned(<2 x double>* %V) {
+; ALL-LABEL: test_v2f64_unaligned:
+; SSE: movupd  (%rdi), %xmm0
+; AVX: vmovupd  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x double>, <2 x double>* %V, align 4
+  ret <2 x double> %0
+}
+
+define <16 x i8> @test_v16i8_abi_alignment(<16 x i8>* %V) {
+; ALL-LABEL: test_v16i8_abi_alignment:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <16 x i8>, <16 x i8>* %V
+  ret <16 x i8> %0
+}
+
+define <8 x i16> @test_v8i16_abi_alignment(<8 x i16>* %V) {
+; ALL-LABEL: test_v8i16_abi_alignment:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <8 x i16>, <8 x i16>* %V
+  ret <8 x i16> %0
+}
+
+define <4 x i32> @test_v4i32_abi_alignment(<4 x i32>* %V) {
+; ALL-LABEL: test_v4i32_abi_alignment:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x i32>, <4 x i32>* %V
+  ret <4 x i32> %0
+}
+
+define <2 x i64> @test_v2i64_abi_alignment(<2 x i64>* %V) {
+; ALL-LABEL: test_v2i64_abi_alignment:
+; SSE: movdqa  (%rdi), %xmm0
+; AVX: vmovdqa  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x i64>, <2 x i64>* %V
+  ret <2 x i64> %0
+}
+
+define <4 x float> @test_v4f32_abi_alignment(<4 x float>* %V) {
+; ALL-LABEL: test_v4f32_abi_alignment:
+; SSE: movaps  (%rdi), %xmm0
+; AVX: vmovaps  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <4 x float>, <4 x float>* %V
+  ret <4 x float> %0
+}
+
+define <2 x double> @test_v2f64_abi_alignment(<2 x double>* %V) {
+; ALL-LABEL: test_v2f64_abi_alignment:
+; SSE: movapd  (%rdi), %xmm0
+; AVX: vmovapd  (%rdi), %xmm0
+; ALL-NEXT: retq
+entry:
+  %0 = load <2 x double>, <2 x double>* %V
+  ret <2 x double> %0
+}