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105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
// #target: macos-x64
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module foo;
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bitstruct BitFieldCross : uint
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{
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uint d : 0..4;
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int a : 5..22;
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uint c : 23..31;
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}
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bitstruct BitFieldCrossU : int
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{
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uint d : 0..4;
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uint a : 5..22;
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uint c : 23..31;
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}
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bitstruct BitFieldCrossUL : long
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{
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uint d : 0..4;
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uint a : 5..22;
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uint c : 23..40;
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uint e : 41..61;
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}
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bitstruct BitFieldCrossULBE : long @bigendian
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{
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uint d : 0..4;
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uint a : 5..22;
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uint c : 23..40;
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uint e : 41..61;
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}
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extern fn void printf(char*, ...);
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fn void main()
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{
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BitFieldCross xx = { 0, -15, 0 };
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printf("%d\n", xx.a);
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xx = { 0x1f, -15, 0x7f };
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printf("%d\n", xx.a);
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BitFieldCrossU xxu = { 0x1f, 0x25678, 0x1ff };
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printf("%x\n", xxu.a);
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BitFieldCrossUL xxy = { 0x1f, 0x25678, 0xeffe, 0xa9597 };
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printf("%x, %x, %x\n", xxy.a, xxy.c, xxy.e);
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BitFieldCrossULBE xxybe = { 0x1f, 0x25678, 0xeffe, 0xa9597 };
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printf("%x, %x, %x\n", xxybe.a, xxybe.c, xxybe.e);
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}
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/* #expect: foo.ll
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entry:
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%xx = alloca i32, align 4
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%xxu = alloca i32, align 4
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%xxy = alloca i64, align 8
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%xxybe = alloca i64, align 8
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store i32 8388128, i32* %xx, align 4
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%0 = load i32, i32* %xx, align 4
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%shl = shl i32 %0, 9
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%ashr = ashr i32 %shl, 14
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %ashr)
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store i32 1073741375, i32* %xx, align 4
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%1 = load i32, i32* %xx, align 4
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%shl1 = shl i32 %1, 9
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%ashr2 = ashr i32 %shl1, 14
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i32 0, i32 0), i32 %ashr2)
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store i32 -3485921, i32* %xxu, align 4
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%2 = load i32, i32* %xxu, align 4
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%lshrl = lshr i32 %2, 5
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%3 = and i32 262143, %lshrl
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i32 0, i32 0), i32 %3)
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store i64 1525363991714123551, i64* %xxy, align 8
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%4 = load i64, i64* %xxy, align 8
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%lshrl3 = lshr i64 %4, 5
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%5 = and i64 262143, %lshrl3
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%ztrunc = trunc i64 %5 to i32
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%6 = load i64, i64* %xxy, align 8
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%lshrl4 = lshr i64 %6, 23
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%7 = and i64 262143, %lshrl4
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%ztrunc5 = trunc i64 %7 to i32
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%8 = load i64, i64* %xxy, align 8
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%lshrl6 = lshr i64 %8, 41
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%9 = and i64 2097151, %lshrl6
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%ztrunc7 = trunc i64 %9 to i32
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i32 0, i32 0), i32 %ztrunc, i32 %ztrunc5, i32 %ztrunc7)
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store i64 2292133196431502101, i64* %xxybe, align 8
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%10 = load i64, i64* %xxybe, align 8
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%11 = call i64 @llvm.bswap.i64(i64 %10)
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%lshrl8 = lshr i64 %11, 5
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%12 = and i64 262143, %lshrl8
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%ztrunc9 = trunc i64 %12 to i32
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%13 = load i64, i64* %xxybe, align 8
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%14 = call i64 @llvm.bswap.i64(i64 %13)
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%lshrl10 = lshr i64 %14, 23
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%15 = and i64 262143, %lshrl10
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%ztrunc11 = trunc i64 %15 to i32
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%16 = load i64, i64* %xxybe, align 8
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%17 = call i64 @llvm.bswap.i64(i64 %16)
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%lshrl12 = lshr i64 %17, 41
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%18 = and i64 2097151, %lshrl12
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%ztrunc13 = trunc i64 %18 to i32
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i32 0, i32 0), i32 %ztrunc9, i32 %ztrunc11, i32 %ztrunc13)
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ret void
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}
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