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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.c-torture/execute/postmod-1.c | |
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Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/postmod-1.c')
-rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/postmod-1.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/postmod-1.c b/gcc/testsuite/gcc.c-torture/execute/postmod-1.c new file mode 100644 index 000000000..b56454f41 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/postmod-1.c @@ -0,0 +1,62 @@ +#define DECLARE_ARRAY(A) array##A[0x10] +#define DECLARE_COUNTER(A) counter##A = 0 +#define DECLARE_POINTER(A) *pointer##A = array##A + x +/* Create a loop that allows post-modification of pointerA, followed by + a use of the post-modified address. */ +#define BEFORE(A) counter##A += *pointer##A, pointer##A += 3 +#define AFTER(A) counter##A += pointer##A[x] + +/* Set up the arrays so that one iteration of the loop sets the counter + to 3.0f. */ +#define INIT_ARRAY(A) array##A[1] = 1.0f, array##A[5] = 2.0f + +/* Check that the loop worked correctly for all values. */ +#define CHECK_ARRAY(A) exit_code |= (counter##A != 3.0f) + +/* Having 6 copies triggered the bug for ARM and Thumb. */ +#define MANY(A) A (0), A (1), A (2), A (3), A (4), A (5) + +/* Each addendA should be allocated a register. */ +#define INIT_VOLATILE(A) addend##A = vol +#define ADD_VOLATILE(A) vol += addend##A + +/* Having 5 copies triggered the bug for ARM and Thumb. */ +#define MANY2(A) A (0), A (1), A (2), A (3), A (4) + +float MANY (DECLARE_ARRAY); +float MANY (DECLARE_COUNTER); + +volatile int stop = 1; +volatile int vol; + +void __attribute__((noinline)) +foo (int x) +{ + float MANY (DECLARE_POINTER); + int i; + + do + { + MANY (BEFORE); + MANY (AFTER); + /* Create an inner loop that should ensure the code above + has registers free for reload inheritance. */ + { + int MANY2 (INIT_VOLATILE); + for (i = 0; i < 10; i++) + MANY2 (ADD_VOLATILE); + } + } + while (!stop); +} + +int +main (void) +{ + int exit_code = 0; + + MANY (INIT_ARRAY); + foo (1); + MANY (CHECK_ARRAY); + return exit_code; +} |