1 files changed, 235 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-rev.ll b/test/CodeGen/AArch64/arm64-rev.ll
new file mode 100644
index 0000000..30d9f4f
--- /dev/null
+++ b/test/CodeGen/AArch64/arm64-rev.ll
@@ -0,0 +1,235 @@
+; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple | FileCheck %s
+
+define i32 @test_rev_w(i32 %a) nounwind {
+entry:
+; CHECK-LABEL: test_rev_w:
+; CHECK: rev w0, w0
+  %0 = tail call i32 @llvm.bswap.i32(i32 %a)
+  ret i32 %0
+}
+
+define i64 @test_rev_x(i64 %a) nounwind {
+entry:
+; CHECK-LABEL: test_rev_x:
+; CHECK: rev x0, x0
+  %0 = tail call i64 @llvm.bswap.i64(i64 %a)
+  ret i64 %0
+}
+
+declare i32 @llvm.bswap.i32(i32) nounwind readnone
+declare i64 @llvm.bswap.i64(i64) nounwind readnone
+
+define i32 @test_rev16_w(i32 %X) nounwind {
+entry:
+; CHECK-LABEL: test_rev16_w:
+; CHECK: rev16 w0, w0
+  %tmp1 = lshr i32 %X, 8
+  %X15 = bitcast i32 %X to i32
+  %tmp4 = shl i32 %X15, 8
+  %tmp2 = and i32 %tmp1, 16711680
+  %tmp5 = and i32 %tmp4, -16777216
+  %tmp9 = and i32 %tmp1, 255
+  %tmp13 = and i32 %tmp4, 65280
+  %tmp6 = or i32 %tmp5, %tmp2
+  %tmp10 = or i32 %tmp6, %tmp13
+  %tmp14 = or i32 %tmp10, %tmp9
+  ret i32 %tmp14
+}
+
+; 64-bit REV16 is *not* a swap then a 16-bit rotation:
+;   01234567 ->(bswap) 76543210 ->(rotr) 10765432
+;   01234567 ->(rev16) 10325476
+define i64 @test_rev16_x(i64 %a) nounwind {
+entry:
+; CHECK-LABEL: test_rev16_x:
+; CHECK-NOT: rev16 x0, x0
+  %0 = tail call i64 @llvm.bswap.i64(i64 %a)
+  %1 = lshr i64 %0, 16
+  %2 = shl i64 %0, 48
+  %3 = or i64 %1, %2
+  ret i64 %3
+}
+
+define i64 @test_rev32_x(i64 %a) nounwind {
+entry:
+; CHECK-LABEL: test_rev32_x:
+; CHECK: rev32 x0, x0
+  %0 = tail call i64 @llvm.bswap.i64(i64 %a)
+  %1 = lshr i64 %0, 32
+  %2 = shl i64 %0, 32
+  %3 = or i64 %1, %2
+  ret i64 %3
+}
+
+define <8 x i8> @test_vrev64D8(<8 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev64D8:
+;CHECK: rev64.8b
+	%tmp1 = load <8 x i8>* %A
+	%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
+	ret <8 x i8> %tmp2
+}
+
+define <4 x i16> @test_vrev64D16(<4 x i16>* %A) nounwind {
+;CHECK-LABEL: test_vrev64D16:
+;CHECK: rev64.4h
+	%tmp1 = load <4 x i16>* %A
+	%tmp2 = shufflevector <4 x i16> %tmp1, <4 x i16> undef, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
+	ret <4 x i16> %tmp2
+}
+
+define <2 x i32> @test_vrev64D32(<2 x i32>* %A) nounwind {
+;CHECK-LABEL: test_vrev64D32:
+;CHECK: rev64.2s
+	%tmp1 = load <2 x i32>* %A
+	%tmp2 = shufflevector <2 x i32> %tmp1, <2 x i32> undef, <2 x i32> <i32 1, i32 0>
+	ret <2 x i32> %tmp2
+}
+
+define <2 x float> @test_vrev64Df(<2 x float>* %A) nounwind {
+;CHECK-LABEL: test_vrev64Df:
+;CHECK: rev64.2s
+	%tmp1 = load <2 x float>* %A
+	%tmp2 = shufflevector <2 x float> %tmp1, <2 x float> undef, <2 x i32> <i32 1, i32 0>
+	ret <2 x float> %tmp2
+}
+
+define <16 x i8> @test_vrev64Q8(<16 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev64Q8:
+;CHECK: rev64.16b
+	%tmp1 = load <16 x i8>* %A
+	%tmp2 = shufflevector <16 x i8> %tmp1, <16 x i8> undef, <16 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0, i32 15, i32 14, i32 13, i32 12, i32 11, i32 10, i32 9, i32 8>
+	ret <16 x i8> %tmp2
+}
+
+define <8 x i16> @test_vrev64Q16(<8 x i16>* %A) nounwind {
+;CHECK-LABEL: test_vrev64Q16:
+;CHECK: rev64.8h
+	%tmp1 = load <8 x i16>* %A
+	%tmp2 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <8 x i32> <i32 3, i32 2, i32 1, i32 0, i32 7, i32 6, i32 5, i32 4>
+	ret <8 x i16> %tmp2
+}
+
+define <4 x i32> @test_vrev64Q32(<4 x i32>* %A) nounwind {
+;CHECK-LABEL: test_vrev64Q32:
+;CHECK: rev64.4s
+	%tmp1 = load <4 x i32>* %A
+	%tmp2 = shufflevector <4 x i32> %tmp1, <4 x i32> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
+	ret <4 x i32> %tmp2
+}
+
+define <4 x float> @test_vrev64Qf(<4 x float>* %A) nounwind {
+;CHECK-LABEL: test_vrev64Qf:
+;CHECK: rev64.4s
+	%tmp1 = load <4 x float>* %A
+	%tmp2 = shufflevector <4 x float> %tmp1, <4 x float> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
+	ret <4 x float> %tmp2
+}
+
+define <8 x i8> @test_vrev32D8(<8 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev32D8:
+;CHECK: rev32.8b
+	%tmp1 = load <8 x i8>* %A
+	%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> <i32 3, i32 2, i32 1, i32 0, i32 7, i32 6, i32 5, i32 4>
+	ret <8 x i8> %tmp2
+}
+
+define <4 x i16> @test_vrev32D16(<4 x i16>* %A) nounwind {
+;CHECK-LABEL: test_vrev32D16:
+;CHECK: rev32.4h
+	%tmp1 = load <4 x i16>* %A
+	%tmp2 = shufflevector <4 x i16> %tmp1, <4 x i16> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
+	ret <4 x i16> %tmp2
+}
+
+define <16 x i8> @test_vrev32Q8(<16 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev32Q8:
+;CHECK: rev32.16b
+	%tmp1 = load <16 x i8>* %A
+	%tmp2 = shufflevector <16 x i8> %tmp1, <16 x i8> undef, <16 x i32> <i32 3, i32 2, i32 1, i32 0, i32 7, i32 6, i32 5, i32 4, i32 11, i32 10, i32 9, i32 8, i32 15, i32 14, i32 13, i32 12>
+	ret <16 x i8> %tmp2
+}
+
+define <8 x i16> @test_vrev32Q16(<8 x i16>* %A) nounwind {
+;CHECK-LABEL: test_vrev32Q16:
+;CHECK: rev32.8h
+	%tmp1 = load <8 x i16>* %A
+	%tmp2 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <8 x i32> <i32 1, i32 0, i32 3, i32 2, i32 5, i32 4, i32 7, i32 6>
+	ret <8 x i16> %tmp2
+}
+
+define <8 x i8> @test_vrev16D8(<8 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev16D8:
+;CHECK: rev16.8b
+	%tmp1 = load <8 x i8>* %A
+	%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> <i32 1, i32 0, i32 3, i32 2, i32 5, i32 4, i32 7, i32 6>
+	ret <8 x i8> %tmp2
+}
+
+define <16 x i8> @test_vrev16Q8(<16 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev16Q8:
+;CHECK: rev16.16b
+	%tmp1 = load <16 x i8>* %A
+	%tmp2 = shufflevector <16 x i8> %tmp1, <16 x i8> undef, <16 x i32> <i32 1, i32 0, i32 3, i32 2, i32 5, i32 4, i32 7, i32 6, i32 9, i32 8, i32 11, i32 10, i32 13, i32 12, i32 15, i32 14>
+	ret <16 x i8> %tmp2
+}
+
+; Undef shuffle indices should not prevent matching to VREV:
+
+define <8 x i8> @test_vrev64D8_undef(<8 x i8>* %A) nounwind {
+;CHECK-LABEL: test_vrev64D8_undef:
+;CHECK: rev64.8b
+	%tmp1 = load <8 x i8>* %A
+	%tmp2 = shufflevector <8 x i8> %tmp1, <8 x i8> undef, <8 x i32> <i32 7, i32 undef, i32 undef, i32 4, i32 3, i32 2, i32 1, i32 0>
+	ret <8 x i8> %tmp2
+}
+
+define <8 x i16> @test_vrev32Q16_undef(<8 x i16>* %A) nounwind {
+;CHECK-LABEL: test_vrev32Q16_undef:
+;CHECK: rev32.8h
+	%tmp1 = load <8 x i16>* %A
+	%tmp2 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <8 x i32> <i32 undef, i32 0, i32 undef, i32 2, i32 5, i32 4, i32 7, i32 undef>
+	ret <8 x i16> %tmp2
+}
+
+; vrev <4 x i16> should use REV32 and not REV64
+define void @test_vrev64(<4 x i16>* nocapture %source, <2 x i16>* nocapture %dst) nounwind ssp {
+; CHECK-LABEL: test_vrev64:
+; CHECK: ldr [[DEST:q[0-9]+]],
+; CHECK: st1.h
+; CHECK: st1.h
+entry:
+  %0 = bitcast <4 x i16>* %source to <8 x i16>*
+  %tmp2 = load <8 x i16>* %0, align 4
+  %tmp3 = extractelement <8 x i16> %tmp2, i32 6
+  %tmp5 = insertelement <2 x i16> undef, i16 %tmp3, i32 0
+  %tmp9 = extractelement <8 x i16> %tmp2, i32 5
+  %tmp11 = insertelement <2 x i16> %tmp5, i16 %tmp9, i32 1
+  store <2 x i16> %tmp11, <2 x i16>* %dst, align 4
+  ret void
+}
+
+; Test vrev of float4
+define void @float_vrev64(float* nocapture %source, <4 x float>* nocapture %dest) nounwind noinline ssp {
+; CHECK: float_vrev64
+; CHECK: ldr [[DEST:q[0-9]+]],
+; CHECK: rev64.4s
+entry:
+  %0 = bitcast float* %source to <4 x float>*
+  %tmp2 = load <4 x float>* %0, align 4
+  %tmp5 = shufflevector <4 x float> <float 0.000000e+00, float undef, float undef, float undef>, <4 x float> %tmp2, <4 x i32> <i32 0, i32 7, i32 0, i32 0>
+  %arrayidx8 = getelementptr inbounds <4 x float>* %dest, i32 11
+  store <4 x float> %tmp5, <4 x float>* %arrayidx8, align 4
+  ret void
+}
+
+
+define <4 x i32> @test_vrev32_bswap(<4 x i32> %source) nounwind {
+; CHECK-LABEL: test_vrev32_bswap:
+; CHECK: rev32.16b
+; CHECK-NOT: rev
+; CHECK: ret
+  %bswap = call <4 x i32> @llvm.bswap.v4i32(<4 x i32> %source)
+  ret <4 x i32> %bswap
+}
+
+declare <4 x i32> @llvm.bswap.v4i32(<4 x i32>) nounwind readnone