RISC-V: Introduce rounding mode operand into fixed-point intrinsics

According to new comming fixed-point API:
https://github.com/riscv-non-isa/rvv-intrinsic-doc/pull/222

Introduce vxrm argument:
- vint32m1_t __riscv_vsadd_vv_i32m1 (vint32m1_t op1, vint32m1_t op2, size_t vl);
+ vint32m1_t __riscv_vsadd_vv_i32m1 (vint32m1_t op1, vint32m1_t op2, size_t vxrm, size_t vl);

This patch doesn't insert vxrm csrw configuration instruction yet.
Will support automatically insert csrw vxrm instruction in the next patch.

This patch does this following:
1. Only extend the vxrm argument.
2. Check vxrm argument is invalid immediate and report error message if it is invalid.

gcc/ChangeLog:

	* config/riscv/riscv-vector-builtins-bases.cc: Introduce rounding mode.
	* config/riscv/riscv-vector-builtins-shapes.cc (struct alu_def): Ditto.
	(struct narrow_alu_def): Ditto.
	* config/riscv/riscv-vector-builtins.cc (function_builder::apply_predication): Ditto.
	(function_expander::use_exact_insn): Ditto.
	* config/riscv/riscv-vector-builtins.h (function_checker::arg_num): New function.
	(function_base::has_rounding_mode_operand_p): New function.

gcc/testsuite/ChangeLog:

	* g++.target/riscv/rvv/base/bug-11.C: Adapt testcase.
	* g++.target/riscv/rvv/base/bug-12.C: Ditto.
	* g++.target/riscv/rvv/base/bug-14.C: Ditto.
	* g++.target/riscv/rvv/base/bug-15.C: Ditto.
	* g++.target/riscv/rvv/base/bug-16.C: Ditto.
	* g++.target/riscv/rvv/base/bug-17.C: Ditto.
	* g++.target/riscv/rvv/base/bug-18.C: Ditto.
	* g++.target/riscv/rvv/base/bug-19.C: Ditto.
	* g++.target/riscv/rvv/base/bug-20.C: Ditto.
	* g++.target/riscv/rvv/base/bug-21.C: Ditto.
	* g++.target/riscv/rvv/base/bug-22.C: Ditto.
	* g++.target/riscv/rvv/base/bug-23.C: Ditto.
	* g++.target/riscv/rvv/base/bug-3.C: Ditto.
	* g++.target/riscv/rvv/base/bug-5.C: Ditto.
	* g++.target/riscv/rvv/base/bug-6.C: Ditto.
	* g++.target/riscv/rvv/base/bug-8.C: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-100.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-101.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-102.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-103.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-104.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-105.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-106.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-107.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-108.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-109.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-110.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-111.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-112.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-113.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-114.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-115.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-116.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-117.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-118.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-119.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-122.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-97.c: Ditto.
	* gcc.target/riscv/rvv/base/binop_vx_constraint-98.c: Ditto.
	* gcc.target/riscv/rvv/base/merge_constraint-1.c: Ditto.
	* gcc.target/riscv/rvv/base/narrow_constraint-6.c: Ditto.
	* gcc.target/riscv/rvv/base/narrow_constraint-7.c: Ditto.
	* gcc.target/riscv/rvv/base/narrow_constraint-8.c: Ditto.
	* gcc.target/riscv/rvv/base/narrow_constraint-9.c: Ditto.
	* gcc.target/riscv/rvv/base/vxrm-2.c: New test.
	* gcc.target/riscv/rvv/base/vxrm-3.c: New test.
	* gcc.target/riscv/rvv/base/vxrm-4.c: New test.
	* gcc.target/riscv/rvv/base/vxrm-5.c: New test.

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/testsuite/g++.target/riscv/rvv/base/bug-23.C b/gcc/testsuite/g++.target/riscv/rvv/base/bug-23.C
index 061063bf44d..d750a77bd77 100644
--- a/gcc/testsuite/g++.target/riscv/rvv/base/bug-23.C
+++ b/gcc/testsuite/g++.target/riscv/rvv/base/bug-23.C
@@ -354,7 +354,7 @@ vbool64_t var_63 = __riscv_vmseq_vx_u8mf8_b64(var_69, var_70, 2);
 vuint8mf8_t var_19 = __riscv_vsub_vx_u8mf8_tumu(var_20, var_21, var_22, var_73, 2);
 // 225, 96
 
-vuint32mf2_t var_16 = __riscv_vssubu_vx_u32mf2_tumu(var_33, var_34, var_35, var_74, 2);
+vuint32mf2_t var_16 = __riscv_vssubu_vx_u32mf2_tumu(var_33, var_34, var_35, var_74, 0, 2);
 // 3077557042, 4186139873
 
 __riscv_vsetvl_e64m4(2);