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71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
// #target: macos-x64
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module foo;
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bitstruct BitField : char[3]
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{
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int a : 0..2;
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int b : 3..8;
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int c : 9..18;
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bool d : 19;
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bool e : 20;
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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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BitField xx = { 2, 3, 15, true, false };
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BitField xy = { 2, 3, 15, false, true };
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printf("%x, %x, %x, %d, %d\n", xx.a, xx.b, xx.c, xx.d, xx.e);
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}
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/* #expect: foo.ll
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define void @foo_main() #0 {
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entry:
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%xx = alloca [3 x i8], align 1
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%xy = alloca [3 x i8], align 1
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store [3 x i8] c"\1A\1E\08", [3 x i8]* %xx, align 1
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store [3 x i8] c"\1A\1E\10", [3 x i8]* %xy, align 1
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%0 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 0
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%1 = load i8, i8* %0, align 1
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%2 = zext i8 %1 to i32
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%3 = shl i32 %2, 29
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%4 = ashr i32 %3, 29
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%5 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 0
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%6 = load i8, i8* %5, align 1
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%7 = zext i8 %6 to i32
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%8 = lshr i32 %7, 3
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%9 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 1
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%10 = load i8, i8* %9, align 1
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%11 = zext i8 %10 to i32
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%12 = shl i32 %11, 5
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%13 = or i32 %12, %8
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%14 = shl i32 %13, 26
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%15 = ashr i32 %14, 26
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%16 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 1
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%17 = load i8, i8* %16, align 1
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%18 = zext i8 %17 to i32
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%19 = lshr i32 %18, 1
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%20 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 2
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%21 = load i8, i8* %20, align 1
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%22 = zext i8 %21 to i32
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%23 = shl i32 %22, 7
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%24 = or i32 %23, %19
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%25 = shl i32 %24, 22
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%26 = ashr i32 %25, 22
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%27 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 2
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%28 = load i8, i8* %27, align 1
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%29 = lshr i8 %28, 3
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%30 = trunc i8 %29 to i1
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%boolsi = zext i1 %30 to i32
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%31 = getelementptr inbounds [3 x i8], [3 x i8]* %xx, i64 0, i64 2
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%32 = load i8, i8* %31, align 1
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%33 = lshr i8 %32, 4
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%34 = trunc i8 %33 to i1
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%boolsi1 = zext i1 %34 to i32
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call void (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i32 0, i32 0), i32 %4, i32 %15, i32 %26, i32 %boolsi, i32 %boolsi1)
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ret void
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}
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