diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-02-10 14:55:44 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-02-23 14:18:18 -0300 |
| commit | 0f88a5c66e1cbb574bf37d953bf7155c0a1f5ae7 (patch) | |
| tree | 201168eb1e5bd955582a6d3541e3f44c61afbb56 /sysdeps/i386/i686/multiarch/memset-sse2-rep.S | |
| parent | dbf37d6d0eccc01e6f5574a01eae64bb54a491ba (diff) | |
| download | glibc-0f88a5c66e1cbb574bf37d953bf7155c0a1f5ae7.tar.gz glibc-0f88a5c66e1cbb574bf37d953bf7155c0a1f5ae7.tar.xz glibc-0f88a5c66e1cbb574bf37d953bf7155c0a1f5ae7.zip | |
i686: Remove bzero optimizations
The symbol is not present in current POSIX specification and compiler already generates memset call.
Diffstat (limited to 'sysdeps/i386/i686/multiarch/memset-sse2-rep.S')
| -rw-r--r-- | sysdeps/i386/i686/multiarch/memset-sse2-rep.S | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/sysdeps/i386/i686/multiarch/memset-sse2-rep.S b/sysdeps/i386/i686/multiarch/memset-sse2-rep.S index 37a10575e7..28df7836e0 100644 --- a/sysdeps/i386/i686/multiarch/memset-sse2-rep.S +++ b/sysdeps/i386/i686/multiarch/memset-sse2-rep.S @@ -32,16 +32,10 @@ #define PUSH(REG) pushl REG; CFI_PUSH (REG) #define POP(REG) popl REG; CFI_POP (REG) -#ifdef USE_AS_BZERO -# define DEST PARMS -# define LEN DEST+4 -# define SETRTNVAL -#else -# define DEST PARMS -# define CHR DEST+4 -# define LEN CHR+4 -# define SETRTNVAL movl DEST(%esp), %eax -#endif +#define DEST PARMS +#define CHR DEST+4 +#define LEN CHR+4 +#define SETRTNVAL movl DEST(%esp), %eax #ifdef PIC # define ENTRANCE PUSH (%ebx); @@ -78,7 +72,7 @@ #endif .section .text.sse2,"ax",@progbits -#if defined SHARED && IS_IN (libc) && !defined USE_AS_BZERO +#if defined SHARED && IS_IN (libc) ENTRY (__memset_chk_sse2_rep) movl 12(%esp), %eax cmpl %eax, 16(%esp) @@ -89,16 +83,12 @@ ENTRY (__memset_sse2_rep) ENTRANCE movl LEN(%esp), %ecx -#ifdef USE_AS_BZERO - xor %eax, %eax -#else movzbl CHR(%esp), %eax movb %al, %ah /* Fill the whole EAX with pattern. */ movl %eax, %edx shl $16, %eax or %edx, %eax -#endif movl DEST(%esp), %edx cmp $32, %ecx jae L(32bytesormore) @@ -228,12 +218,8 @@ L(write_3bytes): /* ECX > 32 and EDX is 4 byte aligned. */ L(32bytesormore): /* Fill xmm0 with the pattern. */ -#ifdef USE_AS_BZERO - pxor %xmm0, %xmm0 -#else movd %eax, %xmm0 pshufd $0, %xmm0, %xmm0 -#endif testl $0xf, %edx jz L(aligned_16) /* ECX > 32 and EDX is not 16 byte aligned. */ |