decaf-lang / minidecaf

The MiniDecaf compilers.

minidecaf

2020 年《编译原理》基础实验参考代码仓库。

助教提供的参考代码放在不同 git branch 上， 具体请看实验指导书。

相关链接

• 实验指导书
• 实验测例

REFERENCE

• nqcc

minidecaf's Issues

咨询框架源代码(c++)

你好，我是哈尔滨工业大学的一名本科生，最近在网站 https://decaf-lang.github.io/minidecaf-tutorial/ 上看到贵系的编译课程指导，想自我尝试一下这门课程的实验部分，希望从中学到知识。
但是我无法获得框架源代码，似乎需要从清华的代码托管平台上获取，所以我在github上搜索框架源代码，最终找到的只有各位助教写好的已经能通过测试用例的代码。
我想问一下您能提供一下 https://decaf-lang.github.io/minidecaf-tutorial/ 该网站上所用到的框架的源代码吗？我想按照这个指导自己去实现一个能通过测试用例的编译器 minidecaf。 谢谢！！！

step8的循环中作用域问题

代码159-162行，233-235行，在访问循环体时，应该同时开一个新的作用域。

Fail to compile on macOS

Hi,
I tried to compile the C program in the doc on macOS, but failed:

❯ cat test.c
#include <stdio.h>
int main() { printf("Hello world!\n"); }
❯ riscv64-unknown-elf-gcc -O3 test.c -march=rv32im -mabi=ilp32
riscv64-unknown-elf-gcc: fatal error: Can't found suitable multilib set for '-march=rv32im'/'-mabi=ilp32'
compilation terminated.

However, I can generate the assembly code:

❯ riscv64-unknown-elf-gcc -O3 -S test.c -march=rv32im -mabi=ilp32
❯ cat test.s
	.file	"test.c"
	.option nopic
	.attribute arch, "rv32i2p0_m2p0"
	.attribute unaligned_access, 0
	.attribute stack_align, 16
	.text
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
.LC0:
	.string	"Hello world!"
	.section	.text.startup,"ax",@progbits
	.align	2
	.globl	main
	.type	main, @function
main:
	lui	a0,%hi(.LC0)
	addi	sp,sp,-16
	addi	a0,a0,%lo(.LC0)
	sw	ra,12(sp)
	call	puts
	lw	ra,12(sp)
	li	a0,0
	addi	sp,sp,16
	jr	ra
	.size	main, .-main
	.ident	"GCC: (SiFive GCC-Metal 10.2.0-2020.12.8) 10.2.0"

Additionally, when I removed the options for 32-bit, It worked well. But it didn't meet the requirement of this course.

❯ riscv64-unknown-elf-gcc -O3 test.c
❯ ls | grep a.out
a.out

BTW, the last snippet on this page which uses qemu-riscv32 is not compatible for macOS. It can be removed to avoid confusion.