void markclispliterals(l) struct conscell **l;
{
  register int n = (*((int *)l - 1)) / sizeof(struct conscell *);
  --n;
  l++;
  while (--n >= 0)
    marklist(*l++);
}


x86 assembly (clang, -O0):
<markclispliterals>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
movslq -0x4(%rax),%rax
shr    $0x3,%rax
mov    %eax,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%rax
add    $0x8,%rax
mov    %rax,-0x8(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0xc(%rbp)
cmp    $0x0,%eax
jl     1170 <markclispliterals+0x60>
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x8,%rcx
mov    %rcx,-0x8(%rbp)
mov    (%rax),%rdi
mov    $0x0,%al
call   1030 <marklist@plt>
jmp    1140 <markclispliterals+0x30>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<markclispliterals>:
push   %rbp
push   %rbx
push   %rax
mov    -0x4(%rdi),%ebp
cmp    $0x10,%ebp
jl     1146 <markclispliterals+0x36>
mov    %rdi,%rbx
shr    $0x3,%ebp
add    $0x8,%rbx
add    $0x1,%ebp
nopl   0x0(%rax,%rax,1)
mov    (%rbx),%rdi
xor    %eax,%eax
call   1030 <marklist@plt>
add    $0x8,%rbx
add    $0xffffffff,%ebp
cmp    $0x2,%ebp
ja     1130 <markclispliterals+0x20>
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
%struct.conscell = type opaque
define void @markclispliterals(%struct.conscell** %0) {
%2 = alloca %struct.conscell**
%3 = alloca i32
store %struct.conscell** %0, %struct.conscell*** %2
%4 = load %struct.conscell**, %struct.conscell*** %2
%5 = bitcast %struct.conscell** %4 to i32*
%6 = getelementptr inbounds i32, i32* %5, i64 -1
%7 = load i32, i32* %6
%8 = sext i32 %7 to i64
%9 = udiv i64 %8, 8
%10 = trunc i64 %9 to i32
store i32 %10, i32* %3
%11 = load i32, i32* %3
%12 = add nsw i32 %11, -1
store i32 %12, i32* %3
%13 = load %struct.conscell**, %struct.conscell*** %2
%14 = getelementptr inbounds %struct.conscell*, %struct.conscell** %13, i32 1
store %struct.conscell** %14, %struct.conscell*** %2
br label %15
15: ; preds = %19, %1
%16 = load i32, i32* %3
%17 = add nsw i32 %16, -1
store i32 %17, i32* %3
%18 = icmp sge i32 %17, 0
br i1 %18, label %19, label %24
19: ; preds = %15
%20 = load %struct.conscell**, %struct.conscell*** %2
%21 = getelementptr inbounds %struct.conscell*, %struct.conscell** %20, i32 1
store %struct.conscell** %21, %struct.conscell*** %2
%22 = load %struct.conscell*, %struct.conscell** %20
%23 = call i32 (%struct.conscell*, ...) bitcast (i32 (...)* @marklist to i32 (%struct.conscell*, ...)*)(%struct.conscell* %22)
br label %15
24: ; preds = %15
ret void
}

LLVM IR (-O2):
%struct.conscell = type opaque
define void @markclispliterals(%struct.conscell** nocapture %0) {
%2 = bitcast %struct.conscell** %0 to i32*
%3 = getelementptr inbounds i32, i32* %2, i64 -1
%4 = load i32, i32* %3
%5 = icmp sgt i32 %4, 15
br i1 %5, label %6, label %16
6: ; preds = %1
%7 = lshr i32 %4, 3
br label %8
8: ; preds = %6, %8
%9 = phi %struct.conscell** [ %11, %8 ], [ %0, %6 ]
%10 = phi i32 [ %12, %8 ], [ %7, %6 ]
%11 = getelementptr inbounds %struct.conscell*, %struct.conscell** %9, i64 1
%12 = add nsw i32 %10, -1
%13 = load %struct.conscell*, %struct.conscell** %11
%14 = tail call i32 (%struct.conscell*, ...) bitcast (i32 (...)* @marklist to i32 (%struct.conscell*, ...)*)(%struct.conscell* %13)
%15 = icmp ugt i32 %10, 2
br i1 %15, label %8, label %16
16: ; preds = %8, %1
ret void
}