Blame SOURCES/gcc48-rh1469697-19.patch
|
 |
85359c |
2017-10-31 Segher Boessenkool <segher@kernel.crsahing.org>
|
|
|
85359c |
|
|
|
85359c |
PR target/82674
|
|
|
85359c |
* config/rs6000/rs6000.md (allocate_stack): Force update interval
|
|
|
85359c |
into a register if it does not fit into an immediate offset field.
|
|
|
85359c |
|
|
|
85359c |
|
|
|
85359c |
diff -Nrup a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
|
|
|
85359c |
--- a/gcc/config/rs6000/rs6000.md 2017-11-06 09:12:21.128237467 -0700
|
|
|
85359c |
+++ b/gcc/config/rs6000/rs6000.md 2017-11-06 09:13:40.521601373 -0700
|
|
|
85359c |
@@ -11886,6 +11886,9 @@
|
|
|
85359c |
{
|
|
|
85359c |
rtx loop_lab, end_loop;
|
|
|
85359c |
bool rotated = CONST_INT_P (rounded_size);
|
|
|
85359c |
+ rtx update = GEN_INT (-probe_interval);
|
|
|
85359c |
+ if (probe_interval > 32768)
|
|
|
85359c |
+ update = force_reg (Pmode, update);
|
|
|
85359c |
|
|
|
85359c |
emit_stack_clash_protection_probe_loop_start (&loop_lab, &end_loop,
|
|
|
85359c |
last_addr, rotated);
|
|
|
85359c |
@@ -11893,13 +11896,11 @@
|
|
|
85359c |
if (Pmode == SImode)
|
|
|
85359c |
emit_insn (gen_movsi_update_stack (stack_pointer_rtx,
|
|
|
85359c |
stack_pointer_rtx,
|
|
|
85359c |
- GEN_INT (-probe_interval),
|
|
|
85359c |
- chain));
|
|
|
85359c |
+ update, chain));
|
|
|
85359c |
else
|
|
|
85359c |
emit_insn (gen_movdi_di_update_stack (stack_pointer_rtx,
|
|
|
85359c |
stack_pointer_rtx,
|
|
|
85359c |
- GEN_INT (-probe_interval),
|
|
|
85359c |
- chain));
|
|
|
85359c |
+ update, chain));
|
|
|
85359c |
emit_stack_clash_protection_probe_loop_end (loop_lab, end_loop,
|
|
|
85359c |
last_addr, rotated);
|
|
|
85359c |
}
|