Author: laijx
Date: 2011-04-25 01:32:17 -0400 (Mon, 25 Apr 2011)
New Revision: 3568
Modified:
trunk/osprey/be/opt/opt_revise_ssa.cxx
Log:
Remove unnecessary CHI generated by lda-indirect folding.
For the following case:
1 int in[10];
2 voif foo(int i) {
3 int *p = in;
4 *p++ = i++;
5 *p++ = i++;
6 *p++ = i++;
7 *p++ = i++;
Lda-Indirect folding will generate extra CHIs for stmt 5, 6, 7. This
patch will prevent generating those unnecessary CHIs.
Reviewed by Sun Chan and Fred.
Modified: trunk/osprey/be/opt/opt_revise_ssa.cxx
===================================================================
--- trunk/osprey/be/opt/opt_revise_ssa.cxx 2011-04-21 23:47:46 UTC (rev
3567)
+++ trunk/osprey/be/opt/opt_revise_ssa.cxx 2011-04-25 05:32:17 UTC (rev
3568)
@@ -269,6 +269,7 @@
_symbols_to_revise->Union1D(idx);
AUX_STAB_ENTRY *aux = _opt_stab->Aux_stab_entry(idx);
aux->Points_to()->Set_expr_kind(EXPR_IS_ADDR);
+ aux->Points_to()->Set_ofst_kind(OFST_IS_FIXED);
aux->Points_to()->Set_named();
cr->Set_scalar_aux_id(idx);
@@ -389,6 +390,7 @@
_symbols_to_revise->Union1D(idx);
AUX_STAB_ENTRY *aux = _opt_stab->Aux_stab_entry(idx);
aux->Points_to()->Set_expr_kind(EXPR_IS_ADDR);
+ aux->Points_to()->Set_expr_kind(OFST_IS_FIXED);
aux->Points_to()->Set_named();
lhs->Set_scalar_aux_id(idx);
@@ -483,6 +485,7 @@
_symbols_to_revise->Union1D(idx);
AUX_STAB_ENTRY *aux = _opt_stab->Aux_stab_entry(idx);
aux->Points_to()->Set_expr_kind(EXPR_IS_ADDR);
+ aux->Points_to()->Set_ofst_kind(OFST_IS_FIXED);
aux->Points_to()->Set_named();
cr->Set_scalar_aux_id(idx);
@@ -592,6 +595,7 @@
_symbols_to_revise->Union1D(idx);
AUX_STAB_ENTRY *aux = _opt_stab->Aux_stab_entry(idx);
aux->Points_to()->Set_expr_kind(EXPR_IS_ADDR);
+ aux->Points_to()->Set_expr_kind(OFST_IS_FIXED);
aux->Points_to()->Set_named();
lhs->Set_scalar_aux_id(idx);
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