diff options
Diffstat (limited to 'testsuite/systemtap.base/inlinedvars.c')
| -rw-r--r-- | testsuite/systemtap.base/inlinedvars.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/testsuite/systemtap.base/inlinedvars.c b/testsuite/systemtap.base/inlinedvars.c index 2756323e..ab1d9fb2 100644 --- a/testsuite/systemtap.base/inlinedvars.c +++ b/testsuite/systemtap.base/inlinedvars.c @@ -4,16 +4,20 @@ m(char *name, int i, long j) // Random syntactical block to be inlined. // Mimics what STAP_PROBE macro does a bit. do { + // Dummy (volatile) counter to trick gcc into thinking we are actually + // using the label. If not it will partially optimize the label away, + // but still emits a somewhat bogus DW_AT_low_pc for it... + volatile int c = 0; volatile __typeof__(name) p_name = name; volatile __typeof__(i) p_i = i; volatile __typeof__(j) p_j = j; // empty asm to force locals into regs. - inlined_label: asm volatile ("" :: "g"(p_name), "g"(p_i), "g"(p_j)); + inlined_label: asm volatile ("nop" : "=g"(c) : "g"(p_name), "g"(p_i), "g"(p_j)); + if (c != 0) goto inlined_label; } while (0); return i + 32; } -/* XXX PR10537 label() doesn't select multiple instances. static inline int call(int pi, long pj) { @@ -29,15 +33,14 @@ call2(int pi2, long pj2) volatile jc2 = pj2 - 64; return m("call2", ic2, jc2); } -*/ int main (int argc, char **argv) { volatile int i = 64; volatile long j = 42; - i = 54;// XXX PR10537 call(i, j); - j = 150; // XXX PR10537 call2(i, j); + call(i, j); + call2(i, j); m("main", i, j); return 0; } |