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According to the doc as below, we need to support the rounding mode of the RVV floating-point, both the static and dynamice frm. https://github.com/riscv-non-isa/rvv-intrinsic-doc/pull/226 For tracking and development friendly, We will take some steps to support all rounding modes for the RVV floating-point rounding modes. 1. Allow rounding mode control by one intrinsic (aka this patch), vfadd. 2. Support static rounding mode control by mode switch, like fixed-point. 3. Support dynamice round mode control by mode switch. 4. Support the rest floating-point instructions for frm. Please *NOTE* this patch only allow the rounding mode control for the vfadd intrinsic API, and the related frm will be coverred by step 2. Signed-off-by: Pan Li <pan2.li@intel.com> Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai> gcc/ChangeLog: * config/riscv/riscv-protos.h (enum floating_point_rounding_mode): Add macro for static frm min and max. * config/riscv/riscv-vector-builtins-bases.cc (class binop_frm): New class for floating-point with frm. (BASE): Add vfadd for frm. * config/riscv/riscv-vector-builtins-bases.h: Likewise. * config/riscv/riscv-vector-builtins-functions.def (vfadd_frm): Likewise. * config/riscv/riscv-vector-builtins-shapes.cc (struct alu_frm_def): New struct for alu with frm. (SHAPE): Add alu with frm. * config/riscv/riscv-vector-builtins-shapes.h: Likewise. * config/riscv/riscv-vector-builtins.cc (function_checker::report_out_of_range_and_not): New function for report out of range and not val. (function_checker::require_immediate_range_or): New function for checking in range or one val. * config/riscv/riscv-vector-builtins.h: Add function decl. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/float-point-frm-error.c: New test. * gcc.target/riscv/rvv/base/float-point-frm.c: New test. |
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