test/CodeGen/RISCV/riscv-vector-callingconv-llvm-ir.c

// REQUIRES: riscv-registered-target
// RUN: %clang_cc1 -triple riscv64 -target-feature +v \
// RUN:   -emit-llvm %s -o - | FileCheck -check-prefix=CHECK-LLVM %s
// RUN: %clang_cc1 -triple riscv64 -target-feature +zve32x \
// RUN:   -emit-llvm %s -o - | FileCheck -check-prefix=CHECK-LLVM-ZVE32X %s
// RUN: %clang_cc1 -std=c23 -triple riscv64 -target-feature +v \
// RUN:   -emit-llvm %s -o - | FileCheck -check-prefix=CHECK-LLVM %s

#include <riscv_vector.h>

// CHECK-LLVM: call riscv_vector_cc <vscale x 2 x i32> @bar
vint32m1_t __attribute__((riscv_vector_cc)) bar(vint32m1_t input);
vint32m1_t test_vector_cc_attr(vint32m1_t input, int32_t *base, size_t vl) {
  vint32m1_t val = __riscv_vle32_v_i32m1(base, vl);
  vint32m1_t ret = bar(input);
  __riscv_vse32_v_i32m1(base, val, vl);
  return ret;
}

// CHECK-LLVM: call riscv_vector_cc <vscale x 2 x i32> @bar
[[riscv::vector_cc]] vint32m1_t bar(vint32m1_t input);
vint32m1_t test_vector_cc_attr2(vint32m1_t input, int32_t *base, size_t vl) {
  vint32m1_t val = __riscv_vle32_v_i32m1(base, vl);
  vint32m1_t ret = bar(input);
  __riscv_vse32_v_i32m1(base, val, vl);
  return ret;
}

// CHECK-LLVM: call <vscale x 2 x i32> @baz
vint32m1_t baz(vint32m1_t input);
vint32m1_t test_no_vector_cc_attr(vint32m1_t input, int32_t *base, size_t vl) {
  vint32m1_t val = __riscv_vle32_v_i32m1(base, vl);
  vint32m1_t ret = baz(input);
  __riscv_vse32_v_i32m1(base, val, vl);
  return ret;
}

// CHECK-LLVM: define dso_local void @test_vls_no_cc(i128 noundef %arg.coerce)
void test_vls_no_cc(__attribute__((vector_size(16))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen(<vscale x 2 x i32> noundef %arg.coerce)
void __attribute__((riscv_vls_cc)) test_vls_default_abi_vlen(__attribute__((vector_size(16))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_c23(<vscale x 2 x i32> noundef %arg.coerce)
[[riscv::vls_cc]] void test_vls_default_abi_vlen_c23(__attribute__((vector_size(16))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_unsupported_feature(<vscale x 8 x i8> noundef %arg.coerce)
void __attribute__((riscv_vls_cc)) test_vls_default_abi_vlen_unsupported_feature(__attribute__((vector_size(16))) _Float16 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_c23_unsupported_feature(<vscale x 8 x i8> noundef %arg.coerce)
[[riscv::vls_cc]] void test_vls_default_abi_vlen_c23_unsupported_feature(__attribute__((vector_size(16))) _Float16 arg) {}

// CHECK-LLVM-ZVE32X: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_unsupported_feature_zve32x(<vscale x 8 x i8> noundef %arg.coerce)
void __attribute__((riscv_vls_cc)) test_vls_default_abi_vlen_unsupported_feature_zve32x(__attribute__((vector_size(16))) float arg) {}

// CHECK-LLVM-ZVE32X: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_c23_unsupported_feature_zve32x(<vscale x 8 x i8> noundef %arg.coerce)
[[riscv::vls_cc]] void test_vls_default_abi_vlen_c23_unsupported_feature_zve32x(__attribute__((vector_size(16))) float arg) {}

// CHECK-LLVM-ZVE32X: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_unsupported_feature_no_zve64x(<vscale x 8 x i8> noundef %arg.coerce)
void __attribute__((riscv_vls_cc)) test_vls_default_abi_vlen_unsupported_feature_no_zve64x(__attribute__((vector_size(16))) uint64_t arg) {}

// CHECK-LLVM-ZVE32X: define dso_local riscv_vls_cc(128) void @test_vls_default_abi_vlen_c23_unsupported_feature_no_zve64x(<vscale x 8 x i8> noundef %arg.coerce)
[[riscv::vls_cc]] void test_vls_default_abi_vlen_c23_unsupported_feature_no_zve64x(__attribute__((vector_size(16))) uint64_t arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_vls_256_abi_vlen(<vscale x 1 x i32> noundef %arg.coerce)
void __attribute__((riscv_vls_cc(256))) test_vls_256_abi_vlen(__attribute__((vector_size(16))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_vls_256_abi_vlen_c23(<vscale x 1 x i32> noundef %arg.coerce)
[[riscv::vls_cc(256)]] void test_vls_256_abi_vlen_c23(__attribute__((vector_size(16))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(1024) void @test_vls_least_element(<vscale x 1 x i32> noundef %arg.coerce)
void __attribute__((riscv_vls_cc(1024))) test_vls_least_element(__attribute__((vector_size(8))) int arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(1024) void @test_vls_least_element_c23(<vscale x 1 x i32> noundef %arg.coerce)
[[riscv::vls_cc(1024)]] void test_vls_least_element_c23(__attribute__((vector_size(8))) int arg) {}


struct st_i32x4 {
    __attribute__((vector_size(16))) int i32;
};

struct st_i32x4_arr1 {
    __attribute__((vector_size(16))) int i32[1];
};

struct st_i32x4_arr4 {
    __attribute__((vector_size(16))) int i32[4];
};

struct st_i32x4_arr8 {
    __attribute__((vector_size(16))) int i32[8];
};


struct st_i32x4x2 {
    __attribute__((vector_size(16))) int i32_1;
    __attribute__((vector_size(16))) int i32_2;
};

struct st_i32x8x2 {
    __attribute__((vector_size(32))) int i32_1;
    __attribute__((vector_size(32))) int i32_2;
};

struct st_i32x64x2 {
    __attribute__((vector_size(256))) int i32_1;
    __attribute__((vector_size(256))) int i32_2;
};

struct st_i32x4x3 {
    __attribute__((vector_size(16))) int i32_1;
    __attribute__((vector_size(16))) int i32_2;
    __attribute__((vector_size(16))) int i32_3;
};

struct st_i32x4x8 {
    __attribute__((vector_size(16))) int i32_1;
    __attribute__((vector_size(16))) int i32_2;
    __attribute__((vector_size(16))) int i32_3;
    __attribute__((vector_size(16))) int i32_4;
    __attribute__((vector_size(16))) int i32_5;
    __attribute__((vector_size(16))) int i32_6;
    __attribute__((vector_size(16))) int i32_7;
    __attribute__((vector_size(16))) int i32_8;
};

struct st_i32x4x9 {
    __attribute__((vector_size(16))) int i32_1;
    __attribute__((vector_size(16))) int i32_2;
    __attribute__((vector_size(16))) int i32_3;
    __attribute__((vector_size(16))) int i32_4;
    __attribute__((vector_size(16))) int i32_5;
    __attribute__((vector_size(16))) int i32_6;
    __attribute__((vector_size(16))) int i32_7;
    __attribute__((vector_size(16))) int i32_8;
    __attribute__((vector_size(16))) int i32_9;
};

typedef int __attribute__((vector_size(256))) int32x64_t;

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_too_large(ptr dead_on_return noundef %0)
void __attribute__((riscv_vls_cc)) test_too_large(int32x64_t arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_too_large_256(<vscale x 16 x i32> noundef %arg.coerce)
void __attribute__((riscv_vls_cc(256))) test_too_large_256(int32x64_t arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4(<vscale x 2 x i32> %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4(struct st_i32x4 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4_256(<vscale x 1 x i32> %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4_256(struct st_i32x4 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4_arr1(<vscale x 2 x i32> %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4_arr1(struct st_i32x4_arr1 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4_arr1_256(<vscale x 1 x i32> %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4_arr1_256(struct st_i32x4_arr1 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4_arr4(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4_arr4(struct st_i32x4_arr4 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4_arr4_256(target("riscv.vector.tuple", <vscale x 4 x i8>, 4) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4_arr4_256(struct st_i32x4_arr4 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4_arr8(target("riscv.vector.tuple", <vscale x 8 x i8>, 8) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4_arr8(struct st_i32x4_arr8 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4_arr8_256(target("riscv.vector.tuple", <vscale x 4 x i8>, 8) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4_arr8_256(struct st_i32x4_arr8 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4x2(target("riscv.vector.tuple", <vscale x 8 x i8>, 2) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4x2(struct st_i32x4x2 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4x2_256(target("riscv.vector.tuple", <vscale x 4 x i8>, 2) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4x2_256(struct st_i32x4x2 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x8x2(target("riscv.vector.tuple", <vscale x 16 x i8>, 2) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x8x2(struct st_i32x8x2 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x8x2_256(target("riscv.vector.tuple", <vscale x 8 x i8>, 2) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x8x2_256(struct st_i32x8x2 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x64x2(ptr dead_on_return noundef %arg)
void __attribute__((riscv_vls_cc)) test_st_i32x64x2(struct st_i32x64x2 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x64x2_256(ptr dead_on_return noundef %arg)
void __attribute__((riscv_vls_cc(256))) test_st_i32x64x2_256(struct st_i32x64x2 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4x3(target("riscv.vector.tuple", <vscale x 8 x i8>, 3) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4x3(struct st_i32x4x3 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4x3_256(target("riscv.vector.tuple", <vscale x 4 x i8>, 3) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4x3_256(struct st_i32x4x3 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4x8(target("riscv.vector.tuple", <vscale x 8 x i8>, 8) %arg.target_coerce)
void __attribute__((riscv_vls_cc)) test_st_i32x4x8(struct st_i32x4x8 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4x8_256(target("riscv.vector.tuple", <vscale x 4 x i8>, 8) %arg.target_coerce)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4x8_256(struct st_i32x4x8 arg) {}

// CHECK-LLVM: define dso_local riscv_vls_cc(128) void @test_st_i32x4x9(ptr dead_on_return noundef %arg)
void __attribute__((riscv_vls_cc)) test_st_i32x4x9(struct st_i32x4x9 arg) {}
// CHECK-LLVM: define dso_local riscv_vls_cc(256) void @test_st_i32x4x9_256(ptr dead_on_return noundef %arg)
void __attribute__((riscv_vls_cc(256))) test_st_i32x4x9_256(struct st_i32x4x9 arg) {}

// CHECK-LLVM-LABEL: define dso_local riscv_vls_cc(128) target("riscv.vector.tuple", <vscale x 8 x i8>, 4) @test_function_prolog_epilog(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce) #0 {
// CHECK-LLVM-NEXT: entry:
// CHECK-LLVM-NEXT:   %retval = alloca %struct.st_i32x4_arr4, align 16
// CHECK-LLVM-NEXT:   %arg = alloca %struct.st_i32x4_arr4, align 16
// CHECK-LLVM-NEXT:   %0 = call <vscale x 2 x i32> @llvm.riscv.tuple.extract.nxv2i32.triscv.vector.tuple_nxv8i8_4t(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce, i32 0)
// CHECK-LLVM-NEXT:   %1 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %0, i64 0)
// CHECK-LLVM-NEXT:   %2 = getelementptr inbounds [4 x <4 x i32>], ptr %arg, i64 0, i64 0
// CHECK-LLVM-NEXT:   store <4 x i32> %1, ptr %2, align 16
// CHECK-LLVM-NEXT:   %3 = call <vscale x 2 x i32> @llvm.riscv.tuple.extract.nxv2i32.triscv.vector.tuple_nxv8i8_4t(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce, i32 1)
// CHECK-LLVM-NEXT:   %4 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %3, i64 0)
// CHECK-LLVM-NEXT:   %5 = getelementptr inbounds [4 x <4 x i32>], ptr %arg, i64 0, i64 1
// CHECK-LLVM-NEXT:   store <4 x i32> %4, ptr %5, align 16
// CHECK-LLVM-NEXT:   %6 = call <vscale x 2 x i32> @llvm.riscv.tuple.extract.nxv2i32.triscv.vector.tuple_nxv8i8_4t(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce, i32 2)
// CHECK-LLVM-NEXT:   %7 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %6, i64 0)
// CHECK-LLVM-NEXT:   %8 = getelementptr inbounds [4 x <4 x i32>], ptr %arg, i64 0, i64 2
// CHECK-LLVM-NEXT:   store <4 x i32> %7, ptr %8, align 16
// CHECK-LLVM-NEXT:   %9 = call <vscale x 2 x i32> @llvm.riscv.tuple.extract.nxv2i32.triscv.vector.tuple_nxv8i8_4t(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %arg.target_coerce, i32 3)
// CHECK-LLVM-NEXT:   %10 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %9, i64 0)
// CHECK-LLVM-NEXT:   %11 = getelementptr inbounds [4 x <4 x i32>], ptr %arg, i64 0, i64 3
// CHECK-LLVM-NEXT:   store <4 x i32> %10, ptr %11, align 16
// CHECK-LLVM-NEXT:   call void @llvm.memcpy.p0.p0.i64(ptr align 16 %retval, ptr align 16 %arg, i64 64, i1 false)
// CHECK-LLVM-NEXT:   %12 = load [4 x <4 x i32>], ptr %retval, align 16
// CHECK-LLVM-NEXT:   %13 = extractvalue [4 x <4 x i32>] %12, 0
// CHECK-LLVM-NEXT:   %cast.scalable = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %13, i64 0)
// CHECK-LLVM-NEXT:   %14 = call target("riscv.vector.tuple", <vscale x 8 x i8>, 4) @llvm.riscv.tuple.insert.triscv.vector.tuple_nxv8i8_4t.nxv2i32(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) poison, <vscale x 2 x i32> %cast.scalable, i32 0)
// CHECK-LLVM-NEXT:   %15 = extractvalue [4 x <4 x i32>] %12, 1
// CHECK-LLVM-NEXT:   %cast.scalable1 = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %15, i64 0)
// CHECK-LLVM-NEXT:   %16 = call target("riscv.vector.tuple", <vscale x 8 x i8>, 4) @llvm.riscv.tuple.insert.triscv.vector.tuple_nxv8i8_4t.nxv2i32(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %14, <vscale x 2 x i32> %cast.scalable1, i32 1)
// CHECK-LLVM-NEXT:   %17 = extractvalue [4 x <4 x i32>] %12, 2
// CHECK-LLVM-NEXT:   %cast.scalable2 = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %17, i64 0)
// CHECK-LLVM-NEXT:   %18 = call target("riscv.vector.tuple", <vscale x 8 x i8>, 4) @llvm.riscv.tuple.insert.triscv.vector.tuple_nxv8i8_4t.nxv2i32(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %16, <vscale x 2 x i32> %cast.scalable2, i32 2)
// CHECK-LLVM-NEXT:   %19 = extractvalue [4 x <4 x i32>] %12, 3
// CHECK-LLVM-NEXT:   %cast.scalable3 = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %19, i64 0)
// CHECK-LLVM-NEXT:   %20 = call target("riscv.vector.tuple", <vscale x 8 x i8>, 4) @llvm.riscv.tuple.insert.triscv.vector.tuple_nxv8i8_4t.nxv2i32(target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %18, <vscale x 2 x i32> %cast.scalable3, i32 3)
// CHECK-LLVM-NEXT:   ret target("riscv.vector.tuple", <vscale x 8 x i8>, 4) %20
// CHECK-LLVM-NEXT: }
struct st_i32x4_arr4 __attribute__((riscv_vls_cc)) test_function_prolog_epilog(struct st_i32x4_arr4 arg) {
  return arg;
}

struct st_i32x4 __attribute__((riscv_vls_cc)) dummy(struct st_i32x4);
// CHECK-LLVM-LABEL: define dso_local riscv_vls_cc(128) <vscale x 2 x i32> @test_call(<vscale x 2 x i32> %arg.target_coerce) #0 {
// CHECK-LLVM-NEXT: entry:
// CHECK-LLVM-NEXT:   %retval = alloca %struct.st_i32x4, align 16
// CHECK-LLVM-NEXT:   %arg = alloca %struct.st_i32x4, align 16
// CHECK-LLVM-NEXT:   %0 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %arg.target_coerce, i64 0)
// CHECK-LLVM-NEXT:   store <4 x i32> %0, ptr %arg, align 16
// CHECK-LLVM-NEXT:   %1 = load <4 x i32>, ptr %arg, align 16
// CHECK-LLVM-NEXT:   %cast.scalable = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %1, i64 0)
// CHECK-LLVM-NEXT:   %call = call riscv_vls_cc(128) <vscale x 2 x i32> @dummy(<vscale x 2 x i32> %cast.scalable)
// CHECK-LLVM-NEXT:   %2 = call <4 x i32> @llvm.vector.extract.v4i32.nxv2i32(<vscale x 2 x i32> %call, i64 0)
// CHECK-LLVM-NEXT:   store <4 x i32> %2, ptr %retval, align 16
// CHECK-LLVM-NEXT:   %3 = load <4 x i32>, ptr %retval, align 16
// CHECK-LLVM-NEXT:   %cast.scalable1 = call <vscale x 2 x i32> @llvm.vector.insert.nxv2i32.v4i32(<vscale x 2 x i32> poison, <4 x i32> %3, i64 0)
// CHECK-LLVM-NEXT:   ret <vscale x 2 x i32> %cast.scalable1
// CHECK-LLVM-NEXT: }
struct st_i32x4 __attribute__((riscv_vls_cc)) test_call(struct st_i32x4 arg) {
  struct st_i32x4 abc = dummy(arg);
  return abc;
}