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| author | Bernd Schmidt <bernds@redhat.com> | 2016-12-12 13:29:48 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2016-12-12 13:29:48 +0000 |
| commit | fba1216545a21ac5226d88e3ab1878acf08f9bce (patch) | |
| tree | d78d0be3a9925582b39c44ab96e4f4556b85aae5 /gcc/ira.c | |
| parent | 8152d6eff66fc2884df825b250ed9e97275b3c94 (diff) | |
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re PR rtl-optimization/78669 (ICE: in combine_and_move_insns, at ira.c:3665 with -Os -fno-tree-ter -mavx512bw)
PR rtl-optimization/78669
* ira.c (combine_and_move_insns): When deleting an insn, clear the
replace flag for all used regs in that insn.
PR rtl-optimization/78669
* gcc.target/i386/pr78669.c: New test.
From-SVN: r243551
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -3714,6 +3714,14 @@ combine_and_move_insns (void) remove_death (regno, use_insn); SET_REG_N_REFS (regno, 0); REG_FREQ (regno) = 0; + df_ref use; + FOR_EACH_INSN_USE (use, def_insn) + { + unsigned int use_regno = DF_REF_REGNO (use); + if (!HARD_REGISTER_NUM_P (use_regno)) + reg_equiv[use_regno].replace = 0; + } + delete_insn (def_insn); reg_equiv[regno].init_insns = NULL; |