We shouldn't alter the tree from the instruction selector. Instead, we
should implement copy propagation later.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munte...@linux360.ro>
---
arch/x86/insn-selector.brg | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/arch/x86/insn-selector.brg b/arch/x86/insn-selector.brg
index ec98e82..b32fedf 100644
--- a/arch/x86/insn-selector.brg
+++ b/arch/x86/insn-selector.brg
@@ -1570,7 +1570,7 @@ stmt: STMT_STORE(EXPR_TEMPORARY, EXPR_LOCAL) 1
struct expression *exprdest, *exprsrc;
struct stack_slot *slot;
struct statement *stmt;
- struct var_info *dest;
+ struct var_info *src, *dest;
enum machine_reg reg;
int index;
@@ -1579,16 +1579,19 @@ stmt: STMT_STORE(EXPR_TEMPORARY, EXPR_LOCAL) 1
exprsrc = to_expr(stmt->store_src);
exprdest = to_expr(stmt->store_dest);
+ dest = exprdest->tmp_low;
+
reg = args_local_to_reg(s->b_parent->method, exprsrc->local_index);
if (reg == REG_UNASSIGNED) {
index = args_stack_index(s->b_parent->method,
exprsrc->local_index);
slot = get_local_slot(s->b_parent->stack_frame, index);
- dest = exprdest->tmp_low;
select_insn(s, tree, memlocal_reg_insn(INSN_MOV_MEMLOCAL_REG,
slot, dest));
- } else
- exprdest->tmp_low = get_fixed_var(s->b_parent, reg);
+ } else {
+ src = get_fixed_var(s->b_parent, reg);
+ select_insn(s, tree, reg_reg_insn(INSN_MOV_REG_REG, src, dest));
+ }
}
%endif
--
1.6.0.6
------------------------------------------------------------------------------
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