https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78180
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-11-02
CC| |trippels at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
.type void BM_Rolling<long [128]>(benchmark::State&), @function
void BM_Rolling<long [128]>(benchmark::State&):
.LFB1712:
.cfi_startproc
pushq %r13
.cfi_def_cfa_offset 16
.cfi_offset 13, -16
pushq %r12
.cfi_def_cfa_offset 24
.cfi_offset 12, -24
movl $128, %ecx
pushq %rbp
.cfi_def_cfa_offset 32
.cfi_offset 6, -32
pushq %rbx
.cfi_def_cfa_offset 40
.cfi_offset 3, -40
movq %rdi, %rbp
xorl %eax, %eax
xorl %ebx, %ebx
xorl %r12d, %r12d
subq $1048, %rsp
.cfi_def_cfa_offset 1088
xorl %r13d, %r13d
movq %rsp, %rdi
rep stosq
.p2align 4,,10
.p2align 3
.L28:
cmpb $0, 0(%rbp)
je .L39
.L23:
movq 8(%rbp), %rax
cmpq 72(%rbp), %rax
leaq 1(%rax), %rdx
movq %rdx, 8(%rbp)
jnb .L40
movq 24(%rbp), %r8
movq 16(%rbp), %rdi
movq %r8, %rax
subq %rdi, %rax
sarq $2, %rax
testq %rax, %rax
je .L25
movl (%rdi), %edx
xorl %eax, %eax
xorl %ecx, %ecx
movl %ebx, %esi
testl %edx, %edx
jg .L26
jmp .L28
.p2align 4,,10
.p2align 3
.L31:
addq $1, %rax
cmpl (%rdi), %ecx
jge .L28
.L26:
addl $1, %ebx
movq %rax, (%rsp,%rsi,8)
movq %rax, %rdx
cmpl $100, %ebx
cmove %r13d, %ebx
movl %ebx, %esi
subq (%rsp,%rsi,8), %rdx
cmpq $999999, %rdx
jg .L30
addq $1, %r12
movq 16(%rbp), %rdi
movq 24(%rbp), %r8
.L30:
movq %r8, %rdx
addl $1, %ecx
subq %rdi, %rdx
sarq $2, %rdx
testq %rdx, %rdx
jne .L31
vs.
.type void BM_Rolling<std::array<long, 128ul> >(benchmark::State&),
@function
void BM_Rolling<std::array<long, 128ul> >(benchmark::State&):
.LFB1713:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
pushq %rbx
.cfi_def_cfa_offset 24
.cfi_offset 3, -24
xorl %eax, %eax
movq %rdi, %rbx
movl $128, %ecx
xorl %ebp, %ebp
subq $1048, %rsp
.cfi_def_cfa_offset 1072
movq %rsp, %rdi
rep stosq
movabsq $429496729600, %rax
movq %rax, 1024(%rsp)
.p2align 4,,10
.p2align 3
.L7:
cmpb $0, (%rbx)
je .L20
.L2:
movq 8(%rbx), %rax
cmpq 72(%rbx), %rax
leaq 1(%rax), %rdx
movq %rdx, 8(%rbx)
jnb .L21
movq 24(%rbx), %r8
movq 16(%rbx), %rsi
movq %r8, %rax
subq %rsi, %rax
sarq $2, %rax
testq %rax, %rax
je .L4
movl (%rsi), %eax
xorl %edx, %edx
xorl %ecx, %ecx
testl %eax, %eax
jg .L5
jmp .L7
.p2align 4,,10
.p2align 3
.L11:
addq $1, %rdx
cmpl (%rsi), %ecx
jge .L7
.L5:
movl 1024(%rsp), %edi
movq %rdi, %rax
movq %rdx, (%rsp,%rdi,8)
addl $1, %eax
cmpl 1028(%rsp), %eax
movl %eax, 1024(%rsp)
jne .L9
movl $0, 1024(%rsp)
xorl %eax, %eax
.L9:
movq %rdx, %rdi
subq (%rsp,%rax,8), %rdi
cmpq $999999, %rdi
jg .L10
addq $1, %rbp
movq 16(%rbx), %rsi
movq 24(%rbx), %r8
.L10:
movq %r8, %rax
addl $1, %ecx
subq %rsi, %rax
sarq $2, %rax
testq %rax, %rax
jne .L11
