RISC-V: Support FP rint to i/l/ll diff size autovec

This patch would like to support the FP below API auto vectorization
with different type size

+---------+-----------+----------+
| API     | RV64      | RV32     |
+---------+-----------+----------+
| irint   | DF => SI  | DF => SI |
| irintf  | -         | -        |
| lrint   | -         | DF => SI |
| lrintf  | SF => DI  | -        |
| llrint  | -         | -        |
| llrintf | SF => DI  | SF => DI |
+---------+-----------+----------+

Given below code:
void
test_lrintf (long *out, float *in, unsigned count)
{
  for (unsigned i = 0; i < count; i++)
    out[i] = __builtin_lrintf (in[i]);
}

Before this patch:
test_lrintf:
  beq     a2,zero,.L8
  slli    a5,a2,32
  srli    a2,a5,30
  add     a4,a1,a2
.L3:
  flw     fa5,0(a1)
  addi    a1,a1,4
  addi    a0,a0,8
  fcvt.l.s a5,fa5,dyn
  sd      a5,-8(a0)
  bne     a1,a4,.L3

After this patch:
test_lrintf:
  beq     a2,zero,.L8
  slli    a2,a2,32
  srli    a2,a2,32
.L3:
  vsetvli a5,a2,e32,mf2,ta,ma
  vle32.v v2,0(a1)
  slli    a3,a5,2
  slli    a4,a5,3
  vfwcvt.x.f.v    v1,v2
  sub     a2,a2,a5
  vse64.v v1,0(a0)
  add     a1,a1,a3
  add     a0,a0,a4
  bne     a2,zero,.L3

Unfortunately, the HF mode is not include due to it requires
additional middle-end support from internal-fun.def.

gcc/ChangeLog:

	* config/riscv/autovec.md: Remove the size check of lrint.
	* config/riscv/riscv-v.cc (emit_vec_narrow_cvt_x_f): New help
	emit func impl.
	(emit_vec_widden_cvt_x_f): New help emit func impl.
	(emit_vec_rounding_to_integer): New func impl to emit the
	rounding from FP to integer.
	(expand_vec_lrint): Leverage emit_vec_rounding_to_integer.
	* config/riscv/vector.md: Take V_VLSF for vfncvt.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/unop/math-irint-run-0.c:
	* gcc.target/riscv/rvv/autovec/unop/math-irint-1.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-irintf-run-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-llrintf-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-llrintf-run-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-lrint-rv32-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-lrint-rv32-run-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-lrintf-rv64-0.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/math-lrintf-rv64-run-0.c: New test.
	* gcc.target/riscv/rvv/autovec/vls/math-irint-1.c: New test.
	* gcc.target/riscv/rvv/autovec/vls/math-llrintf-0.c: New test.
	* gcc.target/riscv/rvv/autovec/vls/math-lrint-rv32-0.c: New test.
	* gcc.target/riscv/rvv/autovec/vls/math-lrintf-rv64-0.c: New test.

Signed-off-by: Pan Li <pan2.li@intel.com>

0 files changed, 0 insertions, 0 deletions