From: Jacob Lifshay <programmerjake@gmail.com>
Date: Sat, 22 Jul 2023 01:47:34 +0000 (-0700)
Subject: add SVP64 test for byte reverse insns
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=02d38e534f65e95d4efcbb130a28dd094c09ce84;p=openpower-isa.git

add SVP64 test for byte reverse insns
---

diff --git a/src/openpower/test/bitmanip/bitmanip_cases.py b/src/openpower/test/bitmanip/bitmanip_cases.py
index 73877a57..1729bd42 100644
--- a/src/openpower/test/bitmanip/bitmanip_cases.py
+++ b/src/openpower/test/bitmanip/bitmanip_cases.py
@@ -4,6 +4,7 @@ from openpower.endian import bigendian
 from openpower.simulator.program import Program
 from openpower.test.state import ExpectedState
 from nmutil.sim_util import hash_256
+from openpower.decoder.isa.caller import SVP64State
 import struct
 
 
@@ -134,3 +135,31 @@ class BitManipTestCase(TestAccumulatorBase):
                     e = ExpectedState(pc=4, int_regs=gprs)
                     e.intregs[3] = expected
                     self.add_case(prog, gprs, expected=e)
+
+    def case_sv_byterev(self):
+        """ sv.brh/brw/brd """
+        for pack_str, mnemonic in ("HHHH", "brh"), ("LL", "brw"), ("Q", "brd"):
+            prog = Program(list(SVP64Asm([
+                f"sv.{mnemonic} *10,*20"])), bigendian)
+            for case_idx in range(10):
+                VL = 5
+                svstate = SVP64State()
+                svstate.vl = VL
+                svstate.maxvl = VL
+                gprs = [0] * 128
+                for elidx in range(VL):
+                    k = f"sv.{mnemonic} {case_idx} {elidx} r20"
+                    gprs[20 + elidx] = hash_256(k) % 2**64
+                e = ExpectedState(pc=8, int_regs=gprs)
+                for elidx in range(VL):
+                    chunks = struct.unpack(
+                        "<" + pack_str, struct.pack("<Q", gprs[20 + elidx]))
+                    e.intregs[10 + elidx] = struct.unpack(
+                        "<Q", struct.pack(">" + pack_str, *chunks))[0]
+                with self.subTest(
+                    case_idx=case_idx,
+                    RS_in=[hex(gprs[20 + i]) for i in range(VL)],
+                    expected_RA=[hex(e.intregs[10 + i]) for i in range(VL)],
+                ):
+                    self.add_case(prog, gprs, expected=e,
+                                  initial_svstate=svstate)