What would C look like if you compiled it to LLVM IR and back again? (https://github.com/JuliaComputing/llvm-cbe)

0_hello-world.c

#include <stdio.h>

int main(void)
{
	printf("hello, world\n");
}

1_hello-world.ll

; ModuleID = 'hello-world.c'
source_filename = "hello-world.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

@.str = private unnamed_addr constant [14 x i8] c"hello, world\0A\00", align 1

; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 @main() #0 {
  %1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
  ret i32 0
}

declare dso_local i32 @printf(i8*, ...) #1

attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }

!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 10.0.0-4ubuntu1 "}

2_hello-world.cbe.c

/* Provide Declarations */
#include <stdarg.h>
#include <setjmp.h>
#include <limits.h>
#include <stdint.h>
#include <math.h>
#ifndef __cplusplus
typedef unsigned char bool;
#endif

#if defined(__GNUC__)
#define  __ATTRIBUTELIST__(x) __attribute__(x)
#else
#define  __ATTRIBUTELIST__(x)  
#endif

#ifdef _MSC_VER  /* Can only support "linkonce" vars with GCC */
#define __attribute__(X)
#endif



/* Global Declarations */

/* Types Declarations */

/* Function definitions */

/* Types Definitions */
struct l_array_14_uint8_t {
  uint8_t array[14];
};

/* External Global Variable Declarations */

/* Function Declarations */
uint32_t main(void) __ATTRIBUTELIST__((noinline, nothrow));
uint32_t printf(uint8_t*, ...);


/* Global Variable Definitions and Initialization */
static struct l_array_14_uint8_t _OC_str = { "hello, world\n" };


/* LLVM Intrinsic Builtin Function Bodies */


/* Function Bodies */

uint32_t main(void) {
  uint32_t llvm_cbe_tmp__1;

  llvm_cbe_tmp__1 = printf(((&_OC_str.array[((int64_t)UINT64_C(0))])));
  return 0;
}