...jne     0x5c <_D4vasm5titleFZv+0x5c>
      58: 31 c0                         xorl    %eax, %eax
      5a: eb 05                         jmp     0x61...

...generated was

	imull	%esi, %edi // y *= x
	xorl	%eax, %eax // result = 0
	testl	%esi, %esi...

...the function:

	imull	%esi, %edi // y *= x
	xorl	%eax, %eax // result = 0
	testl	%esi, %esi...

...messy?!

cmpq	%rdi, %rdx
	jae	.LBB0_2
	xorl	%eax, %eax
	retq
.LBB0_2:
	movq	%rdi...

...llvmasm;
    return __asm!uint(
        `bsrl %eax, %ecx
         #xorl $$31, %ecx
         #xorb $$31, %cl
         movl $$2...

...2:
        addl    $-1, %edi
        bsrl    %edi, %ecx
        xorl    $31, %ecx
        xorb    $31, %cl
        movl    $2...

...D3foo9roundup32FkZk:
	addl	$-1, %edi
	bsrl	%edi, %ecx
	xorl	$31, %ecx
	xorb	$31, %cl
	movl	$2...

...movl	$1024, %edx
	movq	%rax, %rdi
	callq	memset@PLT
	xorl	%eax, %eax
	popq	%rcx
	retq

...esi, (%rdi)
        ret
_Dmain:
        movl    $1, 32
        xorl    %eax, %eax
        ret
uint example.main().__lambda1...

...rsp
        movzbl  gdc_dso_initialized(%rip), %eax
        xorl    $1, %eax
        testb   %al, %al
        je      .L21...