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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", ptr %xx, align 1
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store [3 x i8] c"\1A\1E\10", ptr %xy, align 1
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%0 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 0
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%1 = load i8, ptr %0, align 1
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%zext = zext i8 %1 to i32
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%shl = shl i32 %zext, 29
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%ashr = ashr i32 %shl, 29
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%2 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 0
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%3 = load i8, ptr %2, align 1
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%zext1 = zext i8 %3 to i32
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%lshrl = lshr i32 %zext1, 3
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%4 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 1
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%5 = load i8, ptr %4, align 1
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%zext2 = zext i8 %5 to i32
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%shl3 = shl i32 %zext2, 5
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%6 = or i32 %shl3, %lshrl
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%shl4 = shl i32 %6, 26
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%ashr5 = ashr i32 %shl4, 26
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%7 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 1
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%8 = load i8, ptr %7, align 1
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%zext6 = zext i8 %8 to i32
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%lshrl7 = lshr i32 %zext6, 1
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%9 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 2
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%10 = load i8, ptr %9, align 1
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%zext8 = zext i8 %10 to i32
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%shl9 = shl i32 %zext8, 7
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%11 = or i32 %shl9, %lshrl7
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%shl10 = shl i32 %11, 22
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%ashr11 = ashr i32 %shl10, 22
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%12 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 2
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%13 = load i8, ptr %12, align 1
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%lshrl12 = lshr i8 %13, 3
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%14 = trunc i8 %lshrl12 to i1
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%boolsi = zext i1 %14 to i32
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%15 = getelementptr inbounds [3 x i8], ptr %xx, i64 0, i64 2
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%16 = load i8, ptr %15, align 1
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%lshrl13 = lshr i8 %16, 4
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%17 = trunc i8 %lshrl13 to i1
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%boolsi14 = zext i1 %17 to i32
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call void (ptr, ...) @printf(ptr @.str, i32 %ashr, i32 %ashr5, i32 %ashr11, i32 %boolsi, i32 %boolsi14)
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ret void
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}
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