================
@@ -0,0 +1,1016 @@
+// REQUIRES: riscv-registered-target
+// expected-no-diagnostics
+
+// RUN: %clang %s -O2 -S -o - --target=riscv32 \
+// RUN: -menable-experimental-extensions -march=rv32i_p0p21 -Werror \
+// RUN: | FileCheck %s --check-prefixes=CHECK,RV32
+// RUN: %clang %s -O2 -S -o - --target=riscv64 \
+// RUN: -menable-experimental-extensions -march=rv64i_p0p21 -Werror \
+// RUN: | FileCheck %s --check-prefixes=CHECK,RV64
+
+#include <riscv_packed.h>
+
+// CHECK-LABEL: test_pmv_s_u8x4:
+// CHECK: pmv.bs
+uint8x4_t test_pmv_s_u8x4(uint8_t x) { return __riscv_pmv_s_u8x4(x); }
+
+// CHECK-LABEL: test_pmv_s_i8x4:
+// CHECK: pmv.bs
+int8x4_t test_pmv_s_i8x4(int8_t x) { return __riscv_pmv_s_i8x4(x); }
+
+// CHECK-LABEL: test_pmv_s_u16x2:
+// CHECK: pmv.hs
+uint16x2_t test_pmv_s_u16x2(uint16_t x) { return __riscv_pmv_s_u16x2(x); }
+
+// CHECK-LABEL: test_pmv_s_i16x2:
+// CHECK: pmv.hs
+int16x2_t test_pmv_s_i16x2(int16_t x) { return __riscv_pmv_s_i16x2(x); }
+
+// TODO: On RV64, the 32-bit packed constant splat emits `lui`+`addi` instead
+// of `pli.b`/`pli.h` or `plui.h`.
+// CHECK-LABEL: test_pmv_s_u8x4_imm:
+// RV32: pli.b
+// RV64: lui
+int8x4_t test_pmv_s_u8x4_imm(void) { return __riscv_pmv_s_u8x4(5); }
+
+// CHECK-LABEL: test_pmv_s_i8x4_imm:
+// RV32: pli.b
+// RV64: lui
+int8x4_t test_pmv_s_i8x4_imm(void) { return __riscv_pmv_s_i8x4(-3); }
+
+// CHECK-LABEL: test_pmv_s_u16x2_imm:
+// RV32: pli.h
+// RV64: lui
+uint16x2_t test_pmv_s_u16x2_imm(void) { return __riscv_pmv_s_u16x2(42); }
+
+// CHECK-LABEL: test_pmv_s_i16x2_imm:
+// RV32: pli.h
+// RV64: lui
+int16x2_t test_pmv_s_i16x2_imm(void) { return __riscv_pmv_s_i16x2(-5); }
+
+// CHECK-LABEL: test_pmv_s_u16x2_imm_hi:
+// RV32: plui.h
+// RV64: lui
+uint16x2_t test_pmv_s_u16x2_imm_hi(void) { return __riscv_pmv_s_u16x2(0x3600);
}
+
+// CHECK-LABEL: test_pmv_s_i16x2_imm_hi:
+// RV32: plui.h
+// RV64: lui
+int16x2_t test_pmv_s_i16x2_imm_hi(void) { return __riscv_pmv_s_i16x2(0x3600); }
+
+// CHECK-LABEL: test_pmv_s_u8x8:
+// RV32: pmv.dbs
+// RV64: pmv.bs
+uint8x8_t test_pmv_s_u8x8(uint8_t x) { return __riscv_pmv_s_u8x8(x); }
+
+// CHECK-LABEL: test_pmv_s_i8x8:
+// RV32: pmv.dbs
+// RV64: pmv.bs
+int8x8_t test_pmv_s_i8x8(int8_t x) { return __riscv_pmv_s_i8x8(x); }
+
+// CHECK-LABEL: test_pmv_s_u16x4:
+// RV32: pmv.dhs
+// RV64: pmv.hs
+uint16x4_t test_pmv_s_u16x4(uint16_t x) { return __riscv_pmv_s_u16x4(x); }
+
+// CHECK-LABEL: test_pmv_s_i16x4:
+// RV32: pmv.dhs
+// RV64: pmv.hs
+int16x4_t test_pmv_s_i16x4(int16_t x) { return __riscv_pmv_s_i16x4(x); }
+
+// TODO: On RV32, the 32x2 variable splat emits a plain `mv` instead of
+// `padd.dws` with rs1_p=x0.
+// CHECK-LABEL: test_pmv_s_u32x2:
+// RV32: mv{{[[:space:]]}}
+// RV64: pmv.ws
+uint32x2_t test_pmv_s_u32x2(uint32_t x) { return __riscv_pmv_s_u32x2(x); }
+
+// CHECK-LABEL: test_pmv_s_i32x2:
+// RV32: mv{{[[:space:]]}}
+// RV64: pmv.ws
+int32x2_t test_pmv_s_i32x2(int32_t x) { return __riscv_pmv_s_i32x2(x); }
+
+// TODO: On RV32, the 64-bit packed constant splat emits two `pli.b`/`pli.h`/
----------------
sihuan wrote:
Took a shot at this; opened #202566. Once it lands I'll drop the TODO here and
update the cross-project test to expect the paired form.
https://github.com/llvm/llvm-project/pull/181115
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