main.c

#include <stdint.h>
#include <stdio.h>

int method(char const* str) {
    if (*(uint32_t const*)str == *(uint32_t const*)"GET ") return 0;
    if (*(uint32_t const*)str == *(uint32_t const*)"POST") return 1;
    if (*(uint32_t const*)str == *(uint32_t const*)"PUT ") return 2;
    if (*(uint32_t const*)str == *(uint32_t const*)"DELE") return 3;
    if (*(uint32_t const*)str == *(uint32_t const*)"PATC") return 4;
    return -1;
}

int main() {
    printf("%d\n", method("GET "));
    printf("%d\n", method("POST "));
    printf("%d\n", method("PUT "));
    printf("%d\n", method("DELETE "));
    printf("%d\n", method("PATCH "));
    printf("%d\n", method("OTHER "));
    return 0;
}

main.s

    .section	__TEXT,__text,regular,pure_instructions
	.globl	_method
	.align	4, 0x90
_method:                                ## @method
	.cfi_startproc
## BB#0:
	pushq	%rbp
Ltmp2:
	.cfi_def_cfa_offset 16
Ltmp3:
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
Ltmp4:
	.cfi_def_cfa_register %rbp
	movl	(%rdi), %ecx
	cmpl	$1414745935, %ecx       ## imm = 0x54534F4F
	ja	LBB0_6
## BB#1:
	cmpl	$1162626371, %ecx       ## imm = 0x454C4543
	ja	LBB0_9
## BB#2:
	xorl	%eax, %eax
	cmpl	$542393671, %ecx        ## imm = 0x20544547
	je	LBB0_12
## BB#3:
	cmpl	$542397776, %ecx        ## imm = 0x20545550
	jne	LBB0_4
## BB#8:
	movl	$2, %eax
	popq	%rbp
	ret
LBB0_6:
	cmpl	$1414745936, %ecx       ## imm = 0x54534F50
	jne	LBB0_11
## BB#7:
	movl	$1, %eax
	popq	%rbp
	ret
LBB0_9:
	cmpl	$1162626372, %ecx       ## imm = 0x454C4544
	jne	LBB0_11
## BB#10:
	movl	$3, %eax
	popq	%rbp
	ret
LBB0_4:
	cmpl	$1129595216, %ecx       ## imm = 0x43544150
	jne	LBB0_11
## BB#5:
	movl	$4, %eax
	popq	%rbp
	ret
LBB0_11:
	movl	$-1, %eax
LBB0_12:
	popq	%rbp
	ret
	.cfi_endproc

	.globl	_main
	.align	4, 0x90
_main:                                  ## @main
	.cfi_startproc
## BB#0:
	pushq	%rbp
Ltmp8:
	.cfi_def_cfa_offset 16
Ltmp9:
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
Ltmp10:
	.cfi_def_cfa_register %rbp
	pushq	%rbx
	pushq	%rax
Ltmp11:
	.cfi_offset %rbx, -24
	leaq	L_.str5(%rip), %rbx
	movq	%rbx, %rdi
	xorl	%esi, %esi
	xorb	%al, %al
	callq	_printf
	movq	%rbx, %rdi
	movl	$1, %esi
	xorb	%al, %al
	callq	_printf
	movq	%rbx, %rdi
	movl	$2, %esi
	xorb	%al, %al
	callq	_printf
	movq	%rbx, %rdi
	movl	$3, %esi
	xorb	%al, %al
	callq	_printf
	movq	%rbx, %rdi
	movl	$4, %esi
	xorb	%al, %al
	callq	_printf
	movq	%rbx, %rdi
	movl	$-1, %esi
	xorb	%al, %al
	callq	_printf
	xorl	%eax, %eax
	addq	$8, %rsp
	popq	%rbx
	popq	%rbp
	ret
	.cfi_endproc

	.section	__TEXT,__cstring,cstring_literals
L_.str5:                                ## @.str5
	.asciz	 "%d\n"


.subsections_via_symbols