d0p1/ack
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fix stupid issue where hop output registers were being overwritten, leading to

Browse source 
invalid SSA form.
This commit is contained in:
David Given 2016-10-14 23:12:29 +02:00
parent 98fe70a7de
commit bb53a7fb51
1 changed files with 17 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
mach/proto/mcg/pass_instructionselection.c
View file

@ -181,26 +181,26 @@ static struct insn* walk_instructions(struct burm_node* node, int goal)
if (!insn->insndata->is_fragment) if (!insn->insndata->is_fragment)
{ {
struct vreg* vreg = NULL;
switch (node->label)
{
case ir_to_esn(IR_REG, 1):
case ir_to_esn(IR_REG, 2):
case ir_to_esn(IR_REG, 4):
case ir_to_esn(IR_REG, 8):
vreg = node->ir->result;
break;
case ir_to_esn(IR_NOP, 0):
vreg = node->left->ir->result;
break;
}
insn->hop = current_hop = new_hop(current_bb, insn->ir); insn->hop = current_hop = new_hop(current_bb, insn->ir);
current_hop->output = vreg;
emit(insn); emit(insn);
if (!current_hop->output)
{
switch (node->label)
{
case ir_to_esn(IR_REG, 1):
case ir_to_esn(IR_REG, 2):
case ir_to_esn(IR_REG, 4):
case ir_to_esn(IR_REG, 8):
current_hop->output = node->ir->result;
break;
case ir_to_esn(IR_NOP, 0):
current_hop->output = node->left->ir->result;
break;
}
}
hop_print('I', current_hop); hop_print('I', current_hop);
array_append(&current_bb->hops, current_hop); array_append(&current_bb->hops, current_hop);