shishantbiswas/c3c
1
1
Fork 0
mirror of https://github.com/c3lang/c3c.git synced 2026-02-27 12:01:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bitstruct implementation.

Browse Source
This commit is contained in:
Christoffer Lerno
2021-11-01 23:48:34 +01:00
committed by Christoffer Lerno
parent 29e7af843a
commit 4f09b0c351
27 changed files with 2686 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
test/test_suite/bitstruct/bitstruct_intcontainer.c3t Normal file
View File

@@ -0,0 +1,106 @@
// #target: x64-darwin
module foo;
bitstruct BitFieldCross : uint
{
uint d : 0..4;
int a : 5..22;
uint c : 23..31;
}
bitstruct BitFieldCrossU : int
{
uint d : 0..4;
uint a : 5..22;
uint c : 23..31;
}
bitstruct BitFieldCrossUL : long
{
uint d : 0..4;
uint a : 5..22;
uint c : 23..40;
uint e : 41..61;
}
bitstruct BitFieldCrossULBE : long @bigendian
{
uint d : 0..4;
uint a : 5..22;
uint c : 23..40;
uint e : 41..61;
}
extern fn void printf(char*, ...);
fn void main()
{
BitFieldCross xx = { 0, -177, 0 };
printf("%d\n", xx.a);
xx = { 0xff, -177, 0xff };
printf("%d\n", xx.a);
BitFieldCrossU xxu = { 0xff, 0x12345678, 0xffffffff };
printf("%x\n", xxu.a);
BitFieldCrossUL xxy = { 0xff, 0x12345678, 0xefff_fffe, 0xfdca9597 };
printf("%x, %x, %x\n", xxy.a, xxy.c, xxy.e);
BitFieldCrossULBE xxybe = { 0xff, 0x12345678, 0xefff_fffe, 0xfdca9597 };
printf("%x, %x, %x\n", xxybe.a, xxybe.c, xxybe.e);
}
/* #expect: foo.ll
define void @main() #0 {
entry:
%xx = alloca i32, align 4
%xxu = alloca i32, align 4
%xxy = alloca i64, align 8
%xxybe = alloca i64, align 8
store i32 8382944, i32* %xx, align 4
%0 = load i32, i32* %xx, align 4
%1 = shl i32 %0, 9
%2 = ashr i32 %1, 14
call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %2)
store i32 2147478015, i32* %xx, align 4
%3 = load i32, i32* %xx, align 4
%4 = load i32, i32* %xx, align 4
%5 = shl i32 %4, 9
%6 = ashr i32 %5, 14
call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i32 0, i32 0), i32 %6)
store i32 -7680225, i32* %xxu, align 4
%7 = load i32, i32* %xxu, align 4
%8 = lshr i32 %7, 5
%9 = and i32 %8, 524287
call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i32 0, i32 0), i32 %9)
store i64 1525365675337109279, i64* %xxy, align 8
%10 = load i64, i64* %xxy, align 8
%11 = lshr i64 %10, 5
%12 = and i64 %11, 524287
%13 = trunc i64 %12 to i32
%14 = load i64, i64* %xxy, align 8
%15 = lshr i64 %14, 23
%16 = and i64 %15, 524287
%17 = trunc i64 %16 to i32
%18 = load i64, i64* %xxy, align 8
%19 = lshr i64 %18, 41
%20 = and i64 %19, 4194303
%21 = trunc i64 %20 to i32
call void (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i32 0, i32 0), i32 %13, i32 %17, i32 %21)
store i64 2292062829969091349, i64* %xxybe, align 8
%22 = load i64, i64* %xxybe, align 8
%23 = call i64 @llvm.bswap.i64(i64 %22)
%24 = lshr i64 %23, 5
%25 = and i64 %24, 524287
%26 = trunc i64 %25 to i32
%27 = load i64, i64* %xxybe, align 8
%28 = call i64 @llvm.bswap.i64(i64 %27)
%29 = lshr i64 %28, 23
%30 = and i64 %29, 524287
%31 = trunc i64 %30 to i32
%32 = load i64, i64* %xxybe, align 8
%33 = call i64 @llvm.bswap.i64(i64 %32)
%34 = lshr i64 %33, 41
%35 = and i64 %34, 4194303
%36 = trunc i64 %35 to i32
call void (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i32 0, i32 0), i32 %26, i32 %31, i32 %36)
ret void
}