Hexagon (target/hexagon) Mark new_read_idx in trans functions

Check that the value matches opcode_reginfo

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-3-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/target/hexagon/gen_trans_funcs.py b/target/hexagon/gen_trans_funcs.py
index 53e844a44b..8acecdb993 100755
--- a/target/hexagon/gen_trans_funcs.py
+++ b/target/hexagon/gen_trans_funcs.py
@@ -68,6 +68,7 @@ def mark_which_imm_extended(f, tag):
 ##         insn->regno[0] = args->Rd;
 ##         insn->regno[1] = args->Rs;
 ##         insn->regno[2] = args->Rt;
+##         insn->new_read_idx = -1;
 ##         return true;
 ##     }
 ##
@@ -84,14 +85,14 @@ def gen_trans_funcs(f):
                 insn->opcode = {tag};
         """))
 
-        regno = 0
-        for reg in regs:
-            reg_type = reg[0]
-            reg_id = reg[1]
+        new_read_idx = -1
+        for regno, (reg_type, reg_id, *_) in enumerate(regs):
+            reg = hex_common.get_register(tag, reg_type, reg_id)
             f.write(code_fmt(f"""\
                 insn->regno[{regno}] = args->{reg_type}{reg_id};
             """))
-            regno += 1
+            if reg.is_read() and reg.is_new():
+                new_read_idx = regno
 
         if len(imms) != 0:
             mark_which_imm_extended(f, tag)
@@ -112,6 +113,9 @@ def gen_trans_funcs(f):
                     insn->immed[{immno}] = args->{imm_type}{imm_letter};
                 """))
 
+        f.write(code_fmt(f"""\
+            insn->new_read_idx = {new_read_idx};
+        """))
         f.write(textwrap.dedent(f"""\
                 return true;
             {close_curly}
@@ -120,5 +124,6 @@ def gen_trans_funcs(f):
 
 if __name__ == "__main__":
     hex_common.read_semantics_file(sys.argv[1])
+    hex_common.init_registers()
     with open(sys.argv[2], "w") as f:
         gen_trans_funcs(f)