From: Richard Henderson <richard.henderson@linaro.org> To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, Alistair.Francis@wdc.com, qemu-arm@nongnu.org, qemu-riscv@nongnu.org, philmd@redhat.com Subject: [Qemu-devel] [PATCH 2/3] decodetree: Suppress redundant declaration warnings Date: Fri, 9 Aug 2019 08:41:52 -0700 [thread overview] Message-ID: <20190809154153.31763-3-richard.henderson@linaro.org> (raw) In-Reply-To: <20190809154153.31763-1-richard.henderson@linaro.org> We can tell that a decodetree input file is "secondary" when it uses an argument set marked "!extern". This indicates that at least one of the insn translation functions will have already been declared by the "primary" input file, but given only the secondary we cannot tell which. Avoid redundant declaration warnings by suppressing them with pragmas. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- scripts/decodetree.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/scripts/decodetree.py b/scripts/decodetree.py index a2490aeb74..f02c8acca1 100755 --- a/scripts/decodetree.py +++ b/scripts/decodetree.py @@ -33,6 +33,7 @@ arguments = {} formats = {} patterns = [] allpatterns = [] +anyextern = False translate_prefix = 'trans' translate_scope = 'static ' @@ -485,12 +486,14 @@ def parse_arguments(lineno, name, toks): """Parse one argument set from TOKS at LINENO""" global arguments global re_ident + global anyextern flds = [] extern = False for t in toks: if re_fullmatch('!extern', t): extern = True + anyextern = True continue if not re_fullmatch(re_ident, t): error(lineno, 'invalid argument set token "{0}"'.format(t)) @@ -1191,6 +1194,7 @@ def main(): global insnmask global decode_function global variablewidth + global anyextern decode_scope = 'static ' @@ -1251,6 +1255,19 @@ def main(): # A single translate function can be invoked for different patterns. # Make sure that the argument sets are the same, and declare the # function only once. + # + # If we're sharing formats, we're likely also sharing trans_* functions, + # but we can't tell which ones. Prevent issues from the compiler by + # suppressing redundant declaration warnings. + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic push\n", + "# pragma GCC diagnostic ignored \"-Wredundant-decls\"\n", + "# ifdef __clang__\n" + "# pragma GCC diagnostic ignored \"-Wtypedef-redefinition\"\n", + "# endif\n", + "#endif\n\n") + out_pats = {} for i in allpatterns: if i.name in out_pats: @@ -1262,6 +1279,11 @@ def main(): out_pats[i.name] = i output('\n') + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic pop\n", + "#endif\n\n") + for n in sorted(formats.keys()): f = formats[n] f.output_extract() -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Richard Henderson <richard.henderson@linaro.org> To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-riscv@nongnu.org, peter.maydell@linaro.org, philmd@redhat.com, Alistair.Francis@wdc.com Subject: [Qemu-riscv] [PATCH 2/3] decodetree: Suppress redundant declaration warnings Date: Fri, 9 Aug 2019 08:41:52 -0700 [thread overview] Message-ID: <20190809154153.31763-3-richard.henderson@linaro.org> (raw) In-Reply-To: <20190809154153.31763-1-richard.henderson@linaro.org> We can tell that a decodetree input file is "secondary" when it uses an argument set marked "!extern". This indicates that at least one of the insn translation functions will have already been declared by the "primary" input file, but given only the secondary we cannot tell which. Avoid redundant declaration warnings by suppressing them with pragmas. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- scripts/decodetree.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/scripts/decodetree.py b/scripts/decodetree.py index a2490aeb74..f02c8acca1 100755 --- a/scripts/decodetree.py +++ b/scripts/decodetree.py @@ -33,6 +33,7 @@ arguments = {} formats = {} patterns = [] allpatterns = [] +anyextern = False translate_prefix = 'trans' translate_scope = 'static ' @@ -485,12 +486,14 @@ def parse_arguments(lineno, name, toks): """Parse one argument set from TOKS at LINENO""" global arguments global re_ident + global anyextern flds = [] extern = False for t in toks: if re_fullmatch('!extern', t): extern = True + anyextern = True continue if not re_fullmatch(re_ident, t): error(lineno, 'invalid argument set token "{0}"'.format(t)) @@ -1191,6 +1194,7 @@ def main(): global insnmask global decode_function global variablewidth + global anyextern decode_scope = 'static ' @@ -1251,6 +1255,19 @@ def main(): # A single translate function can be invoked for different patterns. # Make sure that the argument sets are the same, and declare the # function only once. + # + # If we're sharing formats, we're likely also sharing trans_* functions, + # but we can't tell which ones. Prevent issues from the compiler by + # suppressing redundant declaration warnings. + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic push\n", + "# pragma GCC diagnostic ignored \"-Wredundant-decls\"\n", + "# ifdef __clang__\n" + "# pragma GCC diagnostic ignored \"-Wtypedef-redefinition\"\n", + "# endif\n", + "#endif\n\n") + out_pats = {} for i in allpatterns: if i.name in out_pats: @@ -1262,6 +1279,11 @@ def main(): out_pats[i.name] = i output('\n') + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic pop\n", + "#endif\n\n") + for n in sorted(formats.keys()): f = formats[n] f.output_extract() -- 2.17.1
next prev parent reply other threads:[~2019-08-09 15:43 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-09 15:41 [Qemu-devel] [PATCH 0/3] decodetree improvements Richard Henderson 2019-08-09 15:41 ` [Qemu-riscv] " Richard Henderson 2019-08-09 15:41 ` [Qemu-devel] [PATCH 1/3] decodetree: Allow !function with no input bits Richard Henderson 2019-08-09 15:41 ` [Qemu-riscv] " Richard Henderson 2019-08-09 15:52 ` [Qemu-devel] " Peter Maydell 2019-08-09 15:52 ` [Qemu-riscv] " Peter Maydell 2019-08-09 15:57 ` [Qemu-devel] " Richard Henderson 2019-08-09 15:57 ` [Qemu-riscv] " Richard Henderson 2019-08-09 15:41 ` Richard Henderson [this message] 2019-08-09 15:41 ` [Qemu-riscv] [PATCH 2/3] decodetree: Suppress redundant declaration warnings Richard Henderson 2019-08-09 15:48 ` [Qemu-devel] " Philippe Mathieu-Daudé 2019-08-09 15:48 ` [Qemu-riscv] " Philippe Mathieu-Daudé 2019-08-10 2:02 ` [Qemu-devel] " Alistair Francis 2019-08-10 2:02 ` [Qemu-riscv] " Alistair Francis 2019-08-09 15:41 ` [Qemu-devel] [PATCH 3/3] target/riscv: Remove redundant declaration pragmas Richard Henderson 2019-08-09 15:41 ` [Qemu-riscv] " Richard Henderson 2019-08-09 15:48 ` [Qemu-devel] " Philippe Mathieu-Daudé 2019-08-09 15:48 ` [Qemu-riscv] " Philippe Mathieu-Daudé 2019-08-09 17:43 ` [Qemu-devel] " Palmer Dabbelt 2019-08-09 17:43 ` [Qemu-riscv] " Palmer Dabbelt 2019-08-10 0:05 ` Richard Henderson 2019-08-10 0:05 ` [Qemu-riscv] " Richard Henderson 2019-08-10 2:03 ` Alistair Francis 2019-08-10 2:03 ` [Qemu-riscv] " Alistair Francis
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20190809154153.31763-3-richard.henderson@linaro.org \ --to=richard.henderson@linaro.org \ --cc=Alistair.Francis@wdc.com \ --cc=peter.maydell@linaro.org \ --cc=philmd@redhat.com \ --cc=qemu-arm@nongnu.org \ --cc=qemu-devel@nongnu.org \ --cc=qemu-riscv@nongnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.