Inefficient Query iteration

original.s

	.text
	.def	@feat.00;
	.scl	3;
	.type	0;
	.endef
	.globl	@feat.00
.set @feat.00, 0
	.file	"empty.2eb308ba-cgu.0"
	.def	_ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E;
	.scl	3;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E
	.p2align	4, 0x90
_ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E:
.seh_proc _ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E
	subq	$40, %rsp
	.seh_stackalloc 40
	.seh_endprologue
	callq	*%rcx
	#APP
	#NO_APP
	nop
	addq	$40, %rsp
	retq
	.seh_endproc

	.def	_ZN3std2rt10lang_start17hb9c91ac9dd6ed46fE;
	.scl	2;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN3std2rt10lang_start17hb9c91ac9dd6ed46fE
	.globl	_ZN3std2rt10lang_start17hb9c91ac9dd6ed46fE
	.p2align	4, 0x90
_ZN3std2rt10lang_start17hb9c91ac9dd6ed46fE:
.seh_proc _ZN3std2rt10lang_start17hb9c91ac9dd6ed46fE
	subq	$56, %rsp
	.seh_stackalloc 56
	.seh_endprologue
	movq	%r8, %rax
	movq	%rdx, %r8
	movq	%rcx, 48(%rsp)
	movb	%r9b, 32(%rsp)
	leaq	__unnamed_1(%rip), %rdx
	leaq	48(%rsp), %rcx
	movq	%rax, %r9
	callq	_ZN3std2rt19lang_start_internal17h9b461f8940399158E
	nop
	addq	$56, %rsp
	retq
	.seh_endproc

	.def	_ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE;
	.scl	3;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE
	.p2align	4, 0x90
_ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE:
.seh_proc _ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE
	subq	$40, %rsp
	.seh_stackalloc 40
	.seh_endprologue
	movq	(%rcx), %rcx
	callq	_ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E
	xorl	%eax, %eax
	addq	$40, %rsp
	retq
	.seh_endproc

	.def	_ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h94148165bc603fecE;
	.scl	3;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h94148165bc603fecE
	.p2align	4, 0x90
_ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h94148165bc603fecE:
.seh_proc _ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h94148165bc603fecE
	subq	$40, %rsp
	.seh_stackalloc 40
	.seh_endprologue
	movq	(%rcx), %rcx
	callq	_ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hbaba4511104e15d0E
	xorl	%eax, %eax
	addq	$40, %rsp
	retq
	.seh_endproc

	.def	_ZN4core3ptr85drop_in_place$LT$std..rt..lang_start$LT$$LP$$RP$$GT$..$u7b$$u7b$closure$u7d$$u7d$$GT$17h18cd7ed705c9a785E;
	.scl	3;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN4core3ptr85drop_in_place$LT$std..rt..lang_start$LT$$LP$$RP$$GT$..$u7b$$u7b$closure$u7d$$u7d$$GT$17h18cd7ed705c9a785E
	.p2align	4, 0x90
_ZN4core3ptr85drop_in_place$LT$std..rt..lang_start$LT$$LP$$RP$$GT$..$u7b$$u7b$closure$u7d$$u7d$$GT$17h18cd7ed705c9a785E:
	retq

	.def	iter;
	.scl	2;
	.type	32;
	.endef
	.section	.text,"xr",one_only,iter
	.globl	iter
	.p2align	4, 0x90
iter:
.seh_proc iter
	pushq	%r15
	.seh_pushreg %r15
	pushq	%r14
	.seh_pushreg %r14
	pushq	%r12
	.seh_pushreg %r12
	pushq	%rsi
	.seh_pushreg %rsi
	pushq	%rdi
	.seh_pushreg %rdi
	pushq	%rbp
	.seh_pushreg %rbp
	pushq	%rbx
	.seh_pushreg %rbx
	subq	$32, %rsp
	.seh_stackalloc 32
	.seh_endprologue
	movq	(%rcx), %r15
	movq	8(%rcx), %r12
	movl	16(%rcx), %r8d
	movl	20(%rcx), %r14d
	leaq	352(%r12), %rdx
	movq	%r15, %rcx
	movl	%r14d, %r9d
	callq	_ZN63_$LT$$LP$$RP$$u20$as$u20$bevy_ecs..query..fetch..WorldQuery$GT$10init_fetch17h73b66975c92fda3bE
	movq	288(%r12), %r11
	movq	304(%r12), %rax
	leaq	(%r11,%rax,8), %r10
	xorl	%edx, %edx
	xorl	%r9d, %r9d
	xorl	%ecx, %ecx
	xorl	%ebp, %ebp
	cmpq	%rcx, %rbp
	jne	.LBB5_2
	.p2align	4, 0x90
.LBB5_5:
	cmpq	%r10, %r11
	je	.LBB5_15
	movq	(%r11), %rcx
	movq	328(%r15), %rdx
	cmpq	%rdx, %rcx
	jae	.LBB5_14
	movq	312(%r15), %rdi
	leaq	(%rcx,%rcx,2), %rcx
	shlq	$5, %rcx
	movq	336(%r12), %rdx
	movq	64(%rdi,%rcx), %rax
	cmpq	%rdx, %rax
	jbe	.LBB5_4
	leaq	(%rdi,%rcx), %rsi
	movq	48(%rsi), %rbp
	shlq	$4, %rdx
	cmpq	$0, (%rbp,%rdx)
	je	.LBB5_4
	movq	344(%r12), %rbx
	cmpq	%rbx, %rax
	jbe	.LBB5_4
	shlq	$4, %rbx
	cmpq	$0, (%rbp,%rbx)
	je	.LBB5_4
	addq	$8, %r11
	movq	88(%rdi,%rcx), %rcx
	testq	%rcx, %rcx
	je	.LBB5_5
	movq	(%rsi), %rax
	movq	8(%rbp,%rdx), %rdx
	leaq	(%rdx,%rdx,4), %rdi
	shlq	$4, %rdi
	movq	32(%rax,%rdi), %rdx
	movq	56(%rax,%rdi), %r8
	movq	8(%rbp,%rbx), %rbp
	leaq	(%rbp,%rbp,4), %rbp
	shlq	$4, %rbp
	movq	32(%rax,%rbp), %r9
	xorl	%ebp, %ebp
	jmp	.LBB5_13
	.p2align	4, 0x90
.LBB5_2:
	testq	%rdx, %rdx
	je	.LBB5_4
	testq	%r9, %r9
	je	.LBB5_4
.LBB5_13:
	movss	(%r9,%rbp,4), %xmm0
	movl	%r14d, 4(%r8,%rbp,8)
	addss	(%rdx,%rbp,4), %xmm0
	movss	%xmm0, (%rdx,%rbp,4)
	incq	%rbp
	cmpq	%rcx, %rbp
	je	.LBB5_5
	jmp	.LBB5_2
.LBB5_15:
	addq	$32, %rsp
	popq	%rbx
	popq	%rbp
	popq	%rdi
	popq	%rsi
	popq	%r12
	popq	%r14
	popq	%r15
	retq
.LBB5_14:
	leaq	__unnamed_2(%rip), %r8
	callq	_ZN4core9panicking18panic_bounds_check17h70367088e72af65aE
	ud2
.LBB5_4:
	callq	_ZN8bevy_ecs5query25debug_checked_unreachable17h0855ff520ceaea77E
	ud2
	.seh_endproc

	.def	_ZN5empty4main17h972511f3bfbba126E;
	.scl	3;
	.type	32;
	.endef
	.section	.text,"xr",one_only,_ZN5empty4main17h972511f3bfbba126E
	.p2align	4, 0x90
_ZN5empty4main17h972511f3bfbba126E:
	retq

	.def	main;
	.scl	2;
	.type	32;
	.endef
	.section	.text,"xr",one_only,main
	.globl	main
	.p2align	4, 0x90
main:
.seh_proc main
	subq	$56, %rsp
	.seh_stackalloc 56
	.seh_endprologue
	movq	%rdx, %r9
	movslq	%ecx, %r8
	leaq	_ZN5empty4main17h972511f3bfbba126E(%rip), %rax
	movq	%rax, 48(%rsp)
	movb	$2, 32(%rsp)
	leaq	__unnamed_1(%rip), %rdx
	leaq	48(%rsp), %rcx
	callq	_ZN3std2rt19lang_start_internal17h9b461f8940399158E
	nop
	addq	$56, %rsp
	retq
	.seh_endproc

	.section	.rdata,"dr",one_only,__unnamed_1
	.p2align	3
__unnamed_1:
	.quad	_ZN4core3ptr85drop_in_place$LT$std..rt..lang_start$LT$$LP$$RP$$GT$..$u7b$$u7b$closure$u7d$$u7d$$GT$17h18cd7ed705c9a785E
	.asciz	"\b\000\000\000\000\000\000\000\b\000\000\000\000\000\000"
	.quad	_ZN4core3ops8function6FnOnce40call_once$u7b$$u7b$vtable.shim$u7d$$u7d$17h94148165bc603fecE
	.quad	_ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE
	.quad	_ZN3std2rt10lang_start28_$u7b$$u7b$closure$u7d$$u7d$17hffef15e246a4f59aE

	.section	.rdata,"dr",one_only,__unnamed_3
__unnamed_3:
	.ascii	"examples/app/empty.rs"

	.section	.rdata,"dr",one_only,__unnamed_2
	.p2align	3
__unnamed_2:
	.quad	__unnamed_3
	.asciz	"\025\000\000\000\000\000\000\000\r\000\000\000\027\000\000"

	.globl	_fltused

source.rs

use bevy::prelude::*;

#[derive(Component)]
pub struct TestA(f32);

#[derive(Component)]
pub struct TestB(f32);

#[no_mangle]
fn iter(mut query: Query<(&mut TestA, &TestB)>) {
    for (mut a, b) in query.iter_mut() {
        a.0 += b.0;
    }
}

fn main() {}