Ubuntu
gcc-4.8 package

  1. Bug #1194123
  2. Comment #12

Comment 12 for bug 1194123

Revision history for this message
In , Zhenqiang Chen (zhenqiang-chen) wrote :

Root cause:

For ARM, gcc might generate cond_exec insns before shrink-wrapping. But DF_LR_BB_INFO (bb)->def does not include def info from cond_exec insns. So the check in function move_insn_for_shrink_wrap is not enough.

We'd check DF_LIVE_BB_INFO (bb)->gen.

Kyrill,

Please try the attached patch. If it works, I will send it for community review.

Thanks!
-Zhenqiang