Hexagon HVX (target/hexagon) semantics generator

Add HVX support to the semantics generator

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>

target/hexagon/gen_semantics.c

@@ -44,6 +44,11 @@ int main(int argc, char *argv[])
  *         Q6INSN(A2_add,"Rd32=add(Rs32,Rt32)",ATTRIBS(),
  *         "Add 32-bit registers",
  *         { RdV=RsV+RtV;})
+ *     HVX instructions have the following form
+ *         EXTINSN(V6_vinsertwr, "Vx32.w=vinsert(Rt32)",
+ *         ATTRIBS(A_EXTENSION,A_CVI,A_CVI_VX),
+ *         "Insert Word Scalar into Vector",
+ *         VxV.uw[0] = RtV;)
  */
 #define Q6INSN(TAG, BEH, ATTRIBS, DESCR, SEM) \
     do { \
@@ -59,8 +64,23 @@ int main(int argc, char *argv[])
                          ")\n", \
                 #TAG, STRINGIZE(ATTRIBS)); \
     } while (0);
+#define EXTINSN(TAG, BEH, ATTRIBS, DESCR, SEM) \
+    do { \
+        fprintf(outfile, "SEMANTICS( \\\n" \
+                         "    \"%s\", \\\n" \
+                         "    %s, \\\n" \
+                         "    \"\"\"%s\"\"\" \\\n" \
+                         ")\n", \
+                #TAG, STRINGIZE(BEH), STRINGIZE(SEM)); \
+        fprintf(outfile, "ATTRIBUTES( \\\n" \
+                         "    \"%s\", \\\n" \
+                         "    \"%s\" \\\n" \
+                         ")\n", \
+                #TAG, STRINGIZE(ATTRIBS)); \
+    } while (0);
 #include "imported/allidefs.def"
 #undef Q6INSN
+#undef EXTINSN
 
 /*
  * Process the macro definitions
@@ -81,6 +101,19 @@ int main(int argc, char *argv[])
                      ")\n", \
             #MNAME, STRINGIZE(BEH), STRINGIZE(ATTRS));
 #include "imported/macros.def"
+#undef DEF_MACRO
+
+/*
+ * Process the macros for HVX
+ */
+#define DEF_MACRO(MNAME, BEH, ATTRS) \
+    fprintf(outfile, "MACROATTRIB( \\\n" \
+                     "    \"%s\", \\\n" \
+                     "    \"\"\"%s\"\"\", \\\n" \
+                     "    \"%s\" \\\n" \
+                     ")\n", \
+            #MNAME, STRINGIZE(BEH), STRINGIZE(ATTRS));
+#include "imported/allext_macros.def"
 #undef DEF_MACRO
 
     fclose(outfile);

target/hexagon/hex_common.py

@@ -145,6 +145,9 @@ def compute_tag_immediates(tag):
 ##          P                predicate register
 ##          R                GPR register
 ##          M                modifier register
+##          Q                HVX predicate vector
+##          V                HVX vector register
+##          O                HVX new vector register
 ##      regid can be one of the following
 ##          d, e             destination register
 ##          dd               destination register pair
@@ -180,6 +183,9 @@ def is_readwrite(regid):
 def is_scalar_reg(regtype):
     return regtype in "RPC"
 
+def is_hvx_reg(regtype):
+    return regtype in "VQ"
+
 def is_old_val(regtype, regid, tag):
     return regtype+regid+'V' in semdict[tag]
 
@@ -203,6 +209,13 @@ def need_ea(tag):
 def skip_qemu_helper(tag):
     return tag in overrides.keys()
 
+def is_tmp_result(tag):
+    return ('A_CVI_TMP' in attribdict[tag] or
+            'A_CVI_TMP_DST' in attribdict[tag])
+
+def is_new_result(tag):
+    return ('A_CVI_NEW' in attribdict[tag])
+
 def imm_name(immlett):
     return "%siV" % immlett