https://gcc.gnu.org/g:660fd1df790d30e20e68d28bcb042fedf0b365fb
commit 660fd1df790d30e20e68d28bcb042fedf0b365fb
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Mon Sep 8 14:47:30 2025 -0400
Update ChangeLog.*
Diff:
---
gcc/ChangeLog.float | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
diff --git a/gcc/ChangeLog.float b/gcc/ChangeLog.float
index 83f9fd247f39..3c41a0714228 100644
--- a/gcc/ChangeLog.float
+++ b/gcc/ChangeLog.float
@@ -1,3 +1,87 @@
+==================== Branch work221-float, patch #300 ====================
+
+Add initial _Float16 support.
+
+2025-09-08 Michael Meissner <meiss...@linux.ibm.com>
+
+gcc/
+
+ * config/rs6000/altivec.md (VM): Add V8HF.
+ (VM2): Likewise.
+ (VI_char): Likewise.
+ (VI_scalar): Likewise.
+ (VI_unit): Likewise.
+ (VP_small): Likewise.
+ (VP_small_lc): Likewise.
+ (VU_char): Likewise.
+ * config/rs6000/predicate.md (easy_fp_constant): Power10 can load
+ _Float16 constants directly.
+ (ieee16_xxspltiw_constant): New predicate.
+ * config/rs6000/rs6000-builtin.cc (rs6000_type_string): Add _Float16
+ support.
+ * config/rs6000/rs6000-call.cc (USE_FP_FOR_ARG_P): Likewise.
+ * config/rs6000/rs6000-modes.def (HFmode): Likewise.
+ * config/rs6000/rs6000-p8swap.cc (rs6000_gen_stvx): Drop V8HFmode
+ support since V8HFmode doesn't exist on power8 or earlier.
+ (rs6000_gen_lvx): Likewise.
+ (replace_swapped_load_constant): Likewise.
+ * config/rs6000/rs6000-protos.h (vec_const_128bit_type): Add mode field.
+ * config/rs6000/rs6000.cc (rs6000_hard_regno_mode_ok_uncached): Add
+ _Float16 support.
+ (rs6000_modes_tieable_p): Likewise.
+ (rs6000_debug_reg_global): Likewise.
+ (rs6000_setup_reg_addr_masks): Likewise.
+ (rs6000_init_hard_regno_mode_ok): Likewise.
+ (rs6000_secondary_reload_simple_move): Likewise.
+ (rs6000_preferred_reload_class): Likewise.
+ (rs6000_can_change_mode_class): Likewise.
+ (rs6000_function_value): Likewise.
+ (rs6000_scalar_mode_supported_p): Likewise.
+ (rs6000_floatn_mode): Likewise.
+ (constant_fp_to_128bit_vector): Likewise.
+ (vec_const_128bit_to_bytes): Likewise.
+ (constant_generates_xxspltiw): Likewise.
+ * config/rs6000/rs6000.h (TARGET_IEEE16): New macro.
+ * config/rs6000/rs6000.md (FMOVE128_GPR): Add support for V8HFmode.
+ (RELOAD): Likewise.
+ (movhf): Likewise.
+ (movhf_xxspltiw): Likewise.
+ (movhf_internal): Likewise.
+ * config/rs6000/rs6000.opt (-mieee16-gpr-args): New debug switch.
+ * config/rs6000/vector.md (VEC_L): Add V8HFmode.
+ (VEC_M): Likewise.
+ (VEC_E): Likewise.
+ (VEC_base): Likewise.
+ (VEC_base_l): Likewise.
+ (vec_pack_trunc_v4s): Likewise.
+ (vec_unpacks_hi_v8h): Likewise.
+ * config/rs600/vsx.md (V8HI_V8HF): New mode iterator.
+ (VSX_L): Add V8HFmode.
+ (VSX_XXBR): Likewise.
+ (VSm): Likewise.
+ (VSr): Likewise.
+ (VSisa): Likewise.
+ (??r): Likewise.
+ (VSc): Likewise.
+ (VM3): Likewise.
+ (VM3_char): Likewise.
+ (vsx_le_perm_load_<mode>): Likewise.
+ (vsx_le_perm_store_<mode>): Likewise.
+ (permute splits): Likewise.
+ (vsx_ld_elemrev_<mode): Likewise.
+ (vsx_st_elemrev_<mode>): Likewise.
+ (vsx_st_elemrev_<mode>_internal): Likewise.
+ (vsx_xvcvhpsp): Add comment.
+ (vsx_xvcvhpsp_v8hf): New insn.
+ (vsx_xvcvsphp): Add comment.
+ (vsx_xvcvsphp_v8hf): New insn.
+ (extendhf<mode>2): Likewise.
+ (trunc<mode>hf2): Likewise.
+ (xxswapd_<mode>): Add V8HFmode.
+ (vsx_lxvd2x8_le_<MODE): Likewise.
+ (vsx_stxvd2x8_le_<MODE): Likewise.
+ (vsx_extract_<mode>_store_p9): Likewise.
+
==================== Branch work221-float, baseline ====================
2025-09-08 Michael Meissner <meiss...@linux.ibm.com>
