diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ira.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr78610.c | 14 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0fc87d2..97daa79 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-11-30 Segher Boessenkool <segher@kernel.crashing.org> + + PR rtl-optimization/78610 + * ira.c (combine_and_move_insns): Don't substitute into TRAP_IF + instructions. + 2016-11-30 Bin Cheng <bin.cheng@arm.com> PR tree-optimization/78574 @@ -3669,6 +3669,11 @@ combine_and_move_insns (void) if (JUMP_P (use_insn)) continue; + /* Also don't substitute into a conditional trap insn -- it can become + an unconditional trap, and that is a flow control insn. */ + if (GET_CODE (PATTERN (use_insn)) == TRAP_IF) + continue; + df_ref def = DF_REG_DEF_CHAIN (regno); gcc_assert (DF_REG_DEF_COUNT (regno) == 1 && DF_REF_INSN_INFO (def)); rtx_insn *def_insn = DF_REF_INSN (def); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index eac361b..7164611 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-11-30 Segher Boessenkool <segher@kernel.crashing.org> + + PR rtl-optimization/78610 + * gcc.c-torture/compile/pr78610.c: New testcase. + 2016-11-30 Bin Cheng <bin.cheng@arm.com> PR tree-optimization/78574 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr78610.c b/gcc/testsuite/gcc.c-torture/compile/pr78610.c new file mode 100644 index 0000000..0415ae6 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr78610.c @@ -0,0 +1,14 @@ +/* PR rtl-optimization/78610 */ + +unsigned int ao, gl; + +void +ri (void) +{ + for (;;) + { + if (ao != 1) + ao /= 0; + gl = 0; + } +} |