From: Fangrui Song <maskray@google.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org, "H . J . Lu" <hjl.tools@gmail.com>
Subject: Re: [PATCH] i386: Use cmpl instead of cmp
Date: Thu, 4 Aug 2022 14:09:55 -0700 [thread overview]
Message-ID: <20220804210955.t5euae6wwgawjox2@google.com> (raw)
In-Reply-To: <20220804210037.2613528-1-adhemerval.zanella@linaro.org>
On 2022-08-04, Adhemerval Zanella wrote:
>Clang cannot assemble cmp in the AT&T dialect mode.
>---
> sysdeps/i386/i686/multiarch/wcscpy-ssse3.S | 8 ++++----
> sysdeps/i386/i686/multiarch/wcslen-sse2.S | 16 ++++++++--------
> 2 files changed, 12 insertions(+), 12 deletions(-)
>
>diff --git a/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S b/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
>index 601e0f0138..fa6598c54d 100644
>--- a/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
>+++ b/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
>@@ -41,13 +41,13 @@ ENTRY (__wcscpy_ssse3)
> mov STR1(%esp), %edx
> mov STR2(%esp), %ecx
>
>- cmp $0, (%ecx)
>+ cmpl $0, (%ecx)
> jz L(ExitTail4)
>- cmp $0, 4(%ecx)
>+ cmpl $0, 4(%ecx)
> jz L(ExitTail8)
>- cmp $0, 8(%ecx)
>+ cmpl $0, 8(%ecx)
> jz L(ExitTail12)
>- cmp $0, 12(%ecx)
>+ cmpl $0, 12(%ecx)
> jz L(ExitTail16)
>
> PUSH (%edi)
>diff --git a/sysdeps/i386/i686/multiarch/wcslen-sse2.S b/sysdeps/i386/i686/multiarch/wcslen-sse2.S
>index 5337286d41..d49a7ce355 100644
>--- a/sysdeps/i386/i686/multiarch/wcslen-sse2.S
>+++ b/sysdeps/i386/i686/multiarch/wcslen-sse2.S
>@@ -24,21 +24,21 @@
> ENTRY (__wcslen_sse2)
> mov STR(%esp), %edx
>
>- cmp $0, (%edx)
>+ cmpl $0, (%edx)
> jz L(exit_tail0)
>- cmp $0, 4(%edx)
>+ cmpl $0, 4(%edx)
> jz L(exit_tail1)
>- cmp $0, 8(%edx)
>+ cmpl $0, 8(%edx)
> jz L(exit_tail2)
>- cmp $0, 12(%edx)
>+ cmpl $0, 12(%edx)
> jz L(exit_tail3)
>- cmp $0, 16(%edx)
>+ cmpl $0, 16(%edx)
> jz L(exit_tail4)
>- cmp $0, 20(%edx)
>+ cmpl $0, 20(%edx)
> jz L(exit_tail5)
>- cmp $0, 24(%edx)
>+ cmpl $0, 24(%edx)
> jz L(exit_tail6)
>- cmp $0, 28(%edx)
>+ cmpl $0, 28(%edx)
> jz L(exit_tail7)
>
> pxor %xmm0, %xmm0
>--
>2.34.1
>
This also fixes GNU assembler warnings:
../sysdeps/i386/i686/multiarch/wcscpy-ssse3.S: Assembler messages:
../sysdeps/i386/i686/multiarch/wcscpy-ssse3.S:44: Warning: no instruction mnemonic suffix given and no register operands; using default for `cmp'
../sysdeps/i386/i686/multiarch/wcscpy-ssse3.S:46: Warning: no instruction mnemonic suffix given and no register operands; using default for `cmp'
../sysdeps/i386/i686/multiarch/wcscpy-ssse3.S:48: Warning: no instruction mnemonic suffix given and no register operands; using default for `cmp'
../sysdeps/i386/i686/multiarch/wcscpy-ssse3.S:50: Warning: no instruction mnemonic suffix given and no register operands; using default for `cmp'
BTW: I suspect you used git send-email --to='... H.J. Lu <hjl.tools@gmail.com>' instead of --to='... "H.J. Lu" <hjl.tools@gmail.com>' (quotes) :)
Reviewed-by: Fangrui Song <maskray@google.com>
next prev parent reply other threads:[~2022-08-04 21:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-04 21:00 Adhemerval Zanella
2022-08-04 21:09 ` Fangrui Song [this message]
2022-08-04 21:25 ` H.J. Lu
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