From cadcb611f7dff79400ddf616135ecb739ab3a67f Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Sun, 6 Mar 2016 14:16:32 -0800 Subject: Remove dead code from memcpy-sse2-unaligned.S There are ENTRY(__memcpy_sse2_unaligned) movq %rsi, %rax leaq (%rdx,%rdx), %rcx subq %rdi, %rax subq %rdx, %rax cmpq %rcx, %rax jb L(overlapping) When branch is taken, cmpq %rsi, %rdi jae .L3 will never be taken. We can remove the dead code. [BZ #19776] * sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S (.L3) Removed. --- sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S b/sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S index c4509831fa..7207753531 100644 --- a/sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S +++ b/sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S @@ -90,8 +90,6 @@ L(loop): jne L(loop) jmp L(return) L(overlapping): - cmpq %rsi, %rdi - jae .L3 testq %rdx, %rdx .p2align 4,,5 je L(return) @@ -146,15 +144,6 @@ L(less_16): movzwl -2(%rsi,%rdx), %eax movw %ax, -2(%rdi,%rdx) jmp L(return) -.L3: - leaq -1(%rdx), %rax - .p2align 4,,10 - .p2align 4 -.L11: - movzbl (%rsi,%rax), %edx - movb %dl, (%rdi,%rax) - subq $1, %rax - jmp .L11 L(between_9_16): movq (%rsi), %rax movq %rax, (%rdi) -- cgit v1.2.1