diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/sh/rte-delay-slot.c')
-rw-r--r-- | gcc/testsuite/gcc.target/sh/rte-delay-slot.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/sh/rte-delay-slot.c b/gcc/testsuite/gcc.target/sh/rte-delay-slot.c new file mode 100644 index 000000000..eca5db943 --- /dev/null +++ b/gcc/testsuite/gcc.target/sh/rte-delay-slot.c @@ -0,0 +1,33 @@ +/* { dg-do compile { target "sh-*-*" } } */ +/* { dg-options "-O2" } */ +/* { dg-skip-if "" { "sh*-*-*" } "*" "-m1 -m2*" } */ +/* { dg-final { scan-assembler-not "\trte\t\n\tmov.l\t@r15\\+" } } */ + +/* This test checks if the compiler generates a pop instruction + in the delay slot after rte. For the sh and sh2, the rte + instruction reads the return pc from the stack and any pop + in the delay slot crashes the hardware. + + Incorrect code generated + mov.l @r15+,r1 + rte + mov.l @r15+,r14 + + The right code should be + + mov.l @r15+,r1 + mov.l @r15+,r14 + rte + nop +*/ +void INT_MTU2_1_TGIA1 (void) + __attribute__ ((interrupt_handler)); +void +INT_MTU2_1_TGIA1 (void) +{ + volatile int i = 0; + volatile int x, y; + + for (i = 0; i < 10; i++) + y = y + x; +} |