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Commit 89baa208 authored by Jack Palevich's avatar Jack Palevich
Browse files

Fix the ARM postdecrement operator. 

Add a test for ++ and -- so this bug won't happen again.
parent c1e49f96

libacc/acc.cpp

+1 −1
Original line number Diff line number Diff line
@@ -1628,7 +1628,7 @@ class Compiler : public ErrorSink { 
                 o4((0xE3A00000 + t) | rN); // mov    rN, #0

            } else if (t >= -256 && t < 0) {

                // mvn means move constant ^ ~0

                o4((0xE3E00001 - t) | rN); // mvn    rN, #0

                o4((0xE3E00000 - (t+1)) | rN); // mvn    rN, #0

            } else {

                  o4(0xE51F0000 | rN); //         ldr    rN, .L3

                  o4(0xEA000000); //         b .L99

libacc/tests/data/iops.c

0 → 100644
+23 −0
Original line number Diff line number Diff line 
// Check integer operations



void loops() {

    int y;

    printf("++\n");

    for(y = 0; y < 10; y++) {

        printf("%d\n", y);

    }

    printf("--\n");

    for(y = 10; y >= 0; y--) {

        printf("%d\n", y);

    }

}



void checkLiterals() {

    printf("Literals: %d %d\n", 1, -1);

}



int main() {

    checkLiterals();

    loops();

    return 0;

}

libacc/tests/test.py

+34 −7
Original line number Diff line number Diff line
@@ -287,6 +287,33 @@ result: 10""", """""") 
        self.compileCheck(["-R", "data/floatdouble.c"], """Executing compiled code:

result: 0""", """0.002 0.1 10""")



    def testIops(self):

        self.compileCheck(["-R", "data/iops.c"], """Executing compiled code:

result: 0""", """Literals: 1 -1

++

0

1

2

3

4

5

6

7

8

9

--

10

9

8

7

6

5

4

3

2

1

0

""")



if __name__ == '__main__':

    if not outputCanRun():