diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c new file mode 100644 index 000000000..86ad1594c --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target lp64 } */ +/* { dg-options "-O3 -mpatch-functions-for-instrumentation -mno-patch-functions-main-always" } */ + +/* Functions which have the always_patch attribute should be patched no matter + what. Check that there are nop-bytes at the beginning and end of the + function. We add -O3 so that the compiler will try to inline foo (but it + will be blocked by the attribute). */ + +/* { dg-final { scan-assembler ".byte\t0xeb,0x09(.*).byte\t0x90" } } */ +/* { dg-final { scan-assembler "ret(.*).byte\t0x90(.*).byte\t0x90" } } */ + +__attribute__ ((always_patch_for_instrumentation)) +static int foo () { + return 3; +} + +int main () { + volatile int x = foo (); +} |