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Hexagon (target/hexagon) Clean up handling of modifier registers

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Currently, the register number (MuN) for modifier registers is the
modifier register number rather than the index into hex_gpr.  This
patch changes MuN to the hex_gpr index, which is consistent with
the handling of control registers.

Note that HELPER(fcircadd) needs the CS register corresponding to the
modifier register specified in the instruction.  We create a TCGv
variable "CS" to hold the value to pass to the helper.

Reviewed-by: Brian Cain <bcain@quicinc.com>
Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Message-Id: <20231210220712.491494-2-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
This commit is contained in:
Taylor Simpson 2023-12-10 15:07:04 -07:00 • committed by Brian Cain
parent ccdae09a80
commit 421b53d589
4 changed files with 17 additions and 16 deletions
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13
target/hexagon/gen_tcg_funcs.py
View file

@ -99,10 +99,15 @@ def genptr_decl(f, tag, regtype, regid, regno):
hex_common.bad_register(regtype, regid)
elif regtype == "M":
if regid == "u":
f.write(f" const int {regtype}{regid}N = " f"insn->regno[{regno}];\n")
f.write(
f" TCGv {regtype}{regid}V = hex_gpr[{regtype}{regid}N + "
"HEX_REG_M0];\n"
f" const int {regN} = insn->regno[{regno}] + HEX_REG_M0;\n"
)
f.write(
f" TCGv {regtype}{regid}V = hex_gpr[{regN}];\n"
)
f.write(
f" TCGv CS G_GNUC_UNUSED = "
f"hex_gpr[{regN} - HEX_REG_M0 + HEX_REG_CS0];\n"
)
else:
hex_common.bad_register(regtype, regid)
@ -528,7 +533,7 @@ def gen_tcg_func(f, tag, regs, imms):
):
declared.append(f"{regtype}{regid}V")
if regtype == "M":
declared.append(f"{regtype}{regid}N")
declared.append("CS")
elif hex_common.is_new_val(regtype, regid, tag):
declared.append(f"{regtype}{regid}N")
else: