[SveEmitter] Add SVE ACLE for svld1ro.

[sdesmalen]

LGTM!

clang/include/clang/Basic/arm_sve.td

 def SVLDNT1 : MInst<"svldnt1[_{2}]", "dPc", "csilUcUsUiUlhfd", [IsLoad], MemEltTyDefault, "aarch64_sve_ldnt1">;
 
 // Load one vector, unextended load, non-temporal (scalar base, VL displacement)
 def SVLDNT1_VNUM : MInst<"svldnt1_vnum[_{2}]", "dPcl", "csilUcUsUiUlhfd", [IsLoad], MemEltTyDefault, "aarch64_sve_ldnt1">;
 
 // Load one quadword and replicate (scalar base)
 def SVLD1RQ : SInst<"svld1rq[_{2}]", "dPc", "csilUcUsUiUlhfd", MergeNone, "aarch64_sve_ld1rq">;
 
+// Load one octoword and replicate (scalar base)
+let ArchGuard = "defined(__ARM_FEATURE_SVE_MATMUL_FP64)" in {
+  def SVLD1RO : SInst<"svld1ro[_{2}]", "dPc", "csilUcUsUiUlhfd", MergeNone, "aarch64_sve_ld1ro">;
+}
 ////////////////////////////////////////////////////////////////////////////////
 // Stores
 
 // Store one vector (scalar base)
 def SVST1    : MInst<"svst1[_{d}]",  "vPpd", "csilUcUsUiUlhfd", [IsStore], MemEltTyDefault, "aarch64_sve_st1">;
 def SVST1B_S : MInst<"svst1b[_{d}]", "vPAd", "sil",             [IsStore], MemEltTyInt8,    "aarch64_sve_st1">;
 def SVST1B_U : MInst<"svst1b[_{d}]", "vPEd", "UsUiUl",          [IsStore], MemEltTyInt8,    "aarch64_sve_st1">;
 def SVST1H_S : MInst<"svst1h[_{d}]", "vPBd", "il",              [IsStore], MemEltTyInt16,   "aarch64_sve_st1">;

clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_ld1ro.c

+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE_MATMUL_FP64 -D__ARM_FEATURE_SVE -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE_MATMUL_FP64 -D__ARM_FEATURE_SVE -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+
+#include <arm_sve.h>
+
+#ifdef SVE_OVERLOADED_FORMS
+// A simple used,unused... macro, long enough to represent any SVE builtin.
+#define SVE_ACLE_FUNC(A1, A2_UNUSED, A3, A4_UNUSED) A1##A3
+#else
+#define SVE_ACLE_FUNC(A1, A2, A3, A4) A1##A2##A3##A4
+#endif
+
+svint8_t test_svld1ro_s8(svbool_t pg, const int8_t *base) {
+  // CHECK-LABEL: test_svld1ro_s8
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.ld1ro.nxv16i8(<vscale x 16 x i1> %pg, i8* %base)
+  // CHECK: ret <vscale x 16 x i8> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _s8, , )(pg, base);
+}
+
+svint16_t test_svld1ro_s16(svbool_t pg, const int16_t *base) {
+  // CHECK-LABEL: test_svld1ro_s16
+  // CHECK: %[[PG:.*]] = call <vscale x 8 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv8i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.ld1ro.nxv8i16(<vscale x 8 x i1> %[[PG]], i16* %base)
+  // CHECK: ret <vscale x 8 x i16> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _s16, , )(pg, base);
+}
+
+svint32_t test_svld1ro_s32(svbool_t pg, const int32_t *base) {
+  // CHECK-LABEL: test_svld1ro_s32
+  // CHECK: %[[PG:.*]] = call <vscale x 4 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv4i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.ld1ro.nxv4i32(<vscale x 4 x i1> %[[PG]], i32* %base)
+  // CHECK: ret <vscale x 4 x i32> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _s32, , )(pg, base);
+}
+
+svint64_t test_svld1ro_s64(svbool_t pg, const int64_t *base) {
+  // CHECK-LABEL: test_svld1ro_s64
+  // CHECK: %[[PG:.*]] = call <vscale x 2 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv2i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.ld1ro.nxv2i64(<vscale x 2 x i1> %[[PG]], i64* %base)
+  // CHECK: ret <vscale x 2 x i64> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _s64, , )(pg, base);
+}
+
+svuint8_t test_svld1ro_u8(svbool_t pg, const uint8_t *base) {
+  // CHECK-LABEL: test_svld1ro_u8
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.ld1ro.nxv16i8(<vscale x 16 x i1> %pg, i8* %base)
+  // CHECK: ret <vscale x 16 x i8> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _u8, , )(pg, base);
+}
+
+svuint16_t test_svld1ro_u16(svbool_t pg, const uint16_t *base) {
+  // CHECK-LABEL: test_svld1ro_u16
+  // CHECK: %[[PG:.*]] = call <vscale x 8 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv8i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.ld1ro.nxv8i16(<vscale x 8 x i1> %[[PG]], i16* %base)
+  // CHECK: ret <vscale x 8 x i16> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _u16, , )(pg, base);
+}
+
+svuint32_t test_svld1ro_u32(svbool_t pg, const uint32_t *base) {
+  // CHECK-LABEL: test_svld1ro_u32
+  // CHECK: %[[PG:.*]] = call <vscale x 4 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv4i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.ld1ro.nxv4i32(<vscale x 4 x i1> %[[PG]], i32* %base)
+  // CHECK: ret <vscale x 4 x i32> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _u32, , )(pg, base);
+}
+
+svuint64_t test_svld1ro_u64(svbool_t pg, const uint64_t *base) {
+  // CHECK-LABEL: test_svld1ro_u64
+  // CHECK: %[[PG:.*]] = call <vscale x 2 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv2i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.ld1ro.nxv2i64(<vscale x 2 x i1> %[[PG]], i64* %base)
+  // CHECK: ret <vscale x 2 x i64> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _u64, , )(pg, base);
+}
+
+svfloat16_t test_svld1ro_f16(svbool_t pg, const float16_t *base) {
+  // CHECK-LABEL: test_svld1ro_f16
+  // CHECK: %[[PG:.*]] = call <vscale x 8 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv8i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x half> @llvm.aarch64.sve.ld1ro.nxv8f16(<vscale x 8 x i1> %[[PG]], half* %base)
+  // CHECK: ret <vscale x 8 x half> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _f16, , )(pg, base);
+}
+
+svfloat32_t test_svld1ro_f32(svbool_t pg, const float32_t *base) {
+  // CHECK-LABEL: test_svld1ro_f32
+  // CHECK: %[[PG:.*]] = call <vscale x 4 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv4i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x float> @llvm.aarch64.sve.ld1ro.nxv4f32(<vscale x 4 x i1> %[[PG]], float* %base)
+  // CHECK: ret <vscale x 4 x float> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _f32, , )(pg, base);
+}
+
+svfloat64_t test_svld1ro_f64(svbool_t pg, const float64_t *base) {
+  // CHECK-LABEL: test_svld1ro_f64
+  // CHECK: %[[PG:.*]] = call <vscale x 2 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv2i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x double> @llvm.aarch64.sve.ld1ro.nxv2f64(<vscale x 2 x i1> %[[PG]], double* %base)
+  // CHECK: ret <vscale x 2 x double> %[[INTRINSIC]]
+  return SVE_ACLE_FUNC(svld1ro, _f64, , )(pg, base);
+}