qbe-backend/test/abi5.ssa

# returning structs from C

type :st1 = { b 17 }
type :st2 = { w }
type :st3 = { s, w }
type :st4 = { w, d }
type :st5 = { s, l }
type :st6 = { b 16 }
type :st7 = { s, d }
type :st8 = { w 4 }
type :un9 = { { b } { s } }
type :st9 = { w, :un9 }
type :sta = { b, s }
type :stb = { b, b, s }

data $fmt1 = { b "t1: %s\n", b 0 }
data $fmt2 = { b "t2: %d\n", b 0 }
data $fmt3 = { b "t3: %f %d\n", b 0 }
data $fmt4 = { b "t4: %d %f\n", b 0 }
data $fmt5 = { b "t5: %f %lld\n", b 0 }
data $fmt6 = { b "t6: %s\n", b 0 }
data $fmt7 = { b "t7: %f %f\n", b 0 }
data $fmt8 = { b "t8: %d %d %d %d\n", b 0 }
data $fmt9 = { b "t9: %d %f\n", b 0 }
data $fmta = { b "ta: %d %f\n", b 0 }
data $fmtb = { b "tb: %d %d %f\n", b 0 }

export
function $test() {
@start
	%r1 =:st1 call $t1()
	%i1 =w call $printf(l $fmt1, ..., l %r1)

	%r2 =:st2 call $t2()
	%w2 =w loadw %r2
	%i2 =w call $printf(l $fmt2, ..., w %w2)

	%r3 =:st3 call $t3()
	%s3 =s loads %r3
	%r34 =l add %r3, 4
	%w3 =w loadw %r34
	%p3 =d exts %s3
	%i3 =w call $printf(l $fmt3, ..., d %p3, w %w3)

	%r4 =:st4 call $t4()
	%w4 =w loadw %r4
	%r48 =l add 8, %r4
	%d4 =d loadd %r48
	%i4 =w call $printf(l $fmt4, ..., w %w4, d %d4)

	%r5 =:st5 call $t5()
	%s5 =s loads %r5
	%d5 =d exts %s5
	%r58 =l add %r5, 8
	%l5 =l loadl %r58
	%i5 =w call $printf(l $fmt5, ..., d %d5, l %l5)

	%r6 =:st6 call $t6()
	%i6 =w call $printf(l $fmt6, ..., l %r6)

	%r7 =:st7 call $t7()
	%s7 =s loads %r7
	%d71 =d exts %s7
	%r78 =l add %r7, 8
	%d72 =d loadd %r78
	%i7 =w call $printf(l $fmt7, ..., d %d71, d %d72)

	%r8 =:st8 call $t8()
	%r84 =l add 4, %r8
	%r88 =l add 4, %r84
	%r812 =l add 4, %r88
	%w81 =w loadw %r8
	%w82 =w loadw %r84
	%w83 =w loadw %r88
	%w84 =w loadw %r812
	%i8 =w call $printf(l $fmt8, ..., w %w81, w %w82, w %w83, w %w84)

	%r9 =:st9 call $t9()
	%r94 =l add 4, %r9
	%w9 =w loadw %r9
	%s9 =s loads %r94
	%d9 =d exts %s9
	%i9 =w call $printf(l $fmt9, ..., w %w9, d %d9)

	%ra =:sta call $ta()
	%ra4 =l add 4, %ra
	%wa =w loadsb %ra
	%sa =s loads %ra4
	%da =d exts %sa
	%ia =w call $printf(l $fmta, ..., w %wa, d %da)

	%rb =:stb call $tb()
	%rb1 =l add 1, %rb
	%rb4 =l add 4, %rb
	%w0b =w loadsb %rb
	%w1b =w loadsb %rb1
	%sb =s loads %rb4
	%db =d exts %sb
	%ib =w call $printf(l $fmtb, ..., w %w0b, w %w1b, d %db)

	ret
}


# >>> driver
# typedef struct { char t[17]; } st1;
# typedef struct { int i; } st2;
# typedef struct { float f; int i; } st3;
# typedef struct { int i; double d; } st4;
# typedef struct { float f; long long l; } st5;
# typedef struct { char t[16]; } st6;
# typedef struct { float f; double d; } st7;
# typedef struct { int i[4]; } st8;
# typedef struct { int i; union { char c; float f; } u; } st9;
# typedef struct { char c; float f; } sta;
# typedef struct { char c0, c1; float f; } stb;
# extern void test(void);
# st1 t1() { return (st1){"abcdefghijklmnop"}; }
# st2 t2() { return (st2){2}; }
# st3 t3() { return (st3){3.0,30}; }
# st4 t4() { return (st4){4,-40}; }
# st5 t5() { return (st5){5.5,-55}; }
# st6 t6() { return (st6){"abcdefghijklmno"}; }
# st7 t7() { return (st7){7.77,77.7}; }
# st8 t8() { return (st8){-8,88,-888,8888}; }
# st9 t9() { return (st9){9,{.f=9.9}}; }
# sta ta() { return (sta){-10,10.1}; }
# stb tb() { return (stb){-1,11,11.11}; }
# int main() { test(); return 0; }
# <<<

# >>> output
# t1: abcdefghijklmnop
# t2: 2
# t3: 3.000000 30
# t4: 4 -40.000000
# t5: 5.500000 -55
# t6: abcdefghijklmno
# t7: 7.770000 77.700000
# t8: -8 88 -888 8888
# t9: 9 9.900000
# ta: -10 10.100000
# tb: -1 11 11.110000
# <<<