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Don't allow the same IR to be added to the sequence list more than once

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(sometimes happens because op_dup, but makes no sense).
This commit is contained in:
David Given 2016-10-12 00:45:36 +02:00
parent 96dffd2007
commit df239b3f90
1 changed files with 15 additions and 1 deletions
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16
mach/proto/mcg/treebuilder.c
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@ -75,7 +75,7 @@ static struct ir* appendir(struct ir* ir)
int i;
assert(current_bb != NULL);
array_append(&current_bb->irs, ir);
array_appendu(&current_bb->irs, ir);
ir_print('0', ir);
return ir;
@ -196,6 +196,7 @@ static void insn_simple(int opcode)
case op_cii: simple_convert(IR_CII1); break;
case op_ciu: simple_convert(IR_CIU1); break;
case op_cui: simple_convert(IR_CUI1); break;
case op_cmp:
push(
@ -406,6 +407,9 @@ static void insn_ivalue(int opcode, arith value)
case op_sru: simple_alu2(opcode, value, IR_LSR); break;
case op_ngi: simple_alu1(opcode, value, IR_NEG); break;
case op_adu: simple_alu2(opcode, value, IR_ADD); break;
case op_sbu: simple_alu2(opcode, value, IR_SUB); break;
case op_and: simple_alu2(opcode, value, IR_AND); break;
case op_ior: simple_alu2(opcode, value, IR_OR); break;
case op_xor: simple_alu2(opcode, value, IR_EOR); break;
@ -712,6 +716,16 @@ static void insn_lvalue(int opcode, const char* label, arith offset)
);
break;
case op_zre:
appendir(
new_ir2(
IR_STORE, EM_wordsize,
address_of_external(label, offset),
new_wordir(0)
)
);
break;
case op_cal:
assert(offset == 0);
materialise_stack();