Source Code
class TestIf {
int f;
int h;
public void main() {
int x;
x = 40;
if ((20 < x) && (x < 50))
print(48);
else
print(49);
}
}
Results
Assembly
.globl main
main:
pushq %rbp # Save old EBP
movq %rsp, %rbp # Save old ESP
movq $16, %rax
movq %rax, %rdi
callq malloc@PLT
testq %rax, %rax
jz fail_exit
pushq %rax
callq __LABEL0
popq %rax
movq %rbp, %rsp # Restore ESP
popq %rbp # Restore EBP
retq
__LABEL0:
pushq %rbp # Save old EBP
movq %rsp, %rbp # Save old ESP
addq $-8, %rsp
##MovL %0 <- 40
movq $40, %rax
##MoMo %1 <- %0
movq %rax, %rdx
##MovL %2 <- 20
movq $20, %rbx
##MoMo %3 <- %1
movq %rdx, %rax
##MoOp %4 <- %2,%3
cmpq %rbx, %rax
setle %dil
xorb $1, %dil
movzbq %dil, %rcx
##MoMo %5 <- %1
movq %rdx, %rbx
##MovL %6 <- 50
movq $50, %rax
##MoOp %7 <- %5,%6
cmpq %rbx, %rax
setle %dil
xorb $1, %dil
movzbq %dil, %rax
##MoOp %8 <- %4,%7
andq %rcx, %rax
andq $1, %rax
##JuCo %8
testq %rax, %rax
jnz __LABEL1
__LABEL2:
##MovL %9 <- 49
movq $49, %rax
##Prin %9
pushq %rax ## prepare print call
pushq %rbx ## prepare print call
pushq %rcx ## prepare print call
pushq %rdx ## prepare print call
pushq %rax ## print
movq $1,%rax ## sys_write
movq $1,%rdi ## fd stdout
movq %rsp,%rsi ## string pointer
movq $1,%rdx ## size
syscall ## syscall
popq %rsi ##
popq %rdx
popq %rcx
popq %rbx
popq %rax
##Jump 3
jmp __LABEL3
__LABEL3:
movq %rbp, %rsp # Restore ESP
popq %rbp # Restore EBP
retq
__LABEL1:
##MovL %10 <- 48
movq $48, %rax
##Prin %10
pushq %rax ## prepare print call
pushq %rbx ## prepare print call
pushq %rcx ## prepare print call
pushq %rdx ## prepare print call
pushq %rax ## print
movq $1,%rax ## sys_write
movq $1,%rdi ## fd stdout
movq %rsp,%rsi ## string pointer
movq $1,%rdx ## size
syscall ## syscall
popq %rsi ##
popq %rdx
popq %rcx
popq %rbx
popq %rax
##Jump 3
jmp __LABEL3
fail_exit:
movl $1, %eax
popq %rbp
retq
Expected
0
Got
0