Author: yug
Date: 2012-03-14 04:51:57 -0400 (Wed, 14 Mar 2012)
New Revision: 3882
Modified:
trunk/osprey/be/cg/cgemit.cxx
trunk/osprey/be/cg/x8664/cgtarget.cxx
trunk/osprey/be/cg/x8664/exp_loadstore.cxx
Log:
fix for bug951.
under -m32 -fpic environment, when we do ld_st:
when base_ofst ! = 0, we generate
TN :- lea32 GTN2(%rbx) (sym:base_sym+base_ofst)
instead of
tmp_TN :- ld32 GT2(%bx) (sym:base_sym + 0)
TN :- lea32 tmp_TN base_ofst
this is for consideration of facilitate restoring the register TN
to symbol TN in ASM m constraint.
And also this reduces a temp TN.
Code Review: Lai Jian-Xin.
Modified: trunk/osprey/be/cg/cgemit.cxx
===================================================================
--- trunk/osprey/be/cg/cgemit.cxx 2012-03-13 08:20:27 UTC (rev 3881)
+++ trunk/osprey/be/cg/cgemit.cxx 2012-03-14 08:51:57 UTC (rev 3882)
@@ -3346,8 +3346,20 @@
#endif
if( base_ofst == 0 ){
#if defined(TARG_X8664)
- if( Is_Target_32bit() )
- sprintf( buf, "%s", name );
+ // open64.net bug951.
+ // Format IA32 GOT symbol in Asm_String.
+ if( Is_Target_32bit() ) {
+ switch (TN_relocs(tn)) {
+ case TN_RELOC_IA32_GOT:
+ sprintf( buf,
+ "%s@GOT(%s)",
+ name,
+ int_reg_names[3][TN_register(Ebx_TN())- REGISTER_MIN]);
+ break;
+ default:
+ sprintf( buf, "%s", name);
+ }
+ }
else
sprintf( buf, "%s(%%rip)", name );
#else
@@ -3355,8 +3367,21 @@
#endif
} else
#if defined(TARG_X8664)
- if( Is_Target_32bit() )
- sprintf( buf, "%s+%d", name, (int)base_ofst );
+ // open64.net bug951.
+ // Format IA32 GOTOFF symbol in Asm_String.
+ if( Is_Target_32bit() ) {
+ switch (TN_relocs(tn)) {
+ case TN_RELOC_IA32_GOTOFF:
+ sprintf( buf,
+ "%s@GOTOFF+%d(%s)",
+ name,
+ (int)base_ofst,
+ int_reg_names[3][TN_register(Ebx_TN())- REGISTER_MIN]);
+ break;
+ default:
+ sprintf( buf, "%s+%d", name, (int)base_ofst );
+ }
+ }
else
sprintf( buf, "%s+%d(%%rip)", name, (int)base_ofst );
#else
Modified: trunk/osprey/be/cg/x8664/cgtarget.cxx
===================================================================
--- trunk/osprey/be/cg/x8664/cgtarget.cxx 2012-03-13 08:20:27 UTC (rev
3881)
+++ trunk/osprey/be/cg/x8664/cgtarget.cxx 2012-03-14 08:51:57 UTC (rev
3882)
@@ -4020,7 +4020,15 @@
if( WN_operator(load) == OPR_LDA ){
OP* lda_op = OPS_last( ops );
- asm_opnd = OP_iadd(lda_op) ? OP_opnd( lda_op, 1 ) : OP_opnd( lda_op, 0 );
+ // open64.net bug951. On finding the symbol TN, don't miss the cases of:
+ // TN :- ld32 GTN2(%rbx) (sym:base_sym +0)
+ // TN :- lea32 GTN2(%rbx) (sym:base_sym+base_ofst)
+ if (Is_Target_32bit() && Gen_PIC_Shared) {
+ asm_opnd = OP_iadd(lda_op) ? OP_opnd( lda_op, 1 ) :
+ (OP_code(lda_op) == TOP_ldc32) ? OP_opnd( lda_op, 0) : OP_opnd(
lda_op, 1);
+ } else {
+ asm_opnd = OP_iadd(lda_op) ? OP_opnd( lda_op, 1 ) : OP_opnd( lda_op, 0 );
+ }
OPS_Remove_Op( ops, lda_op );
} else if( WN_operator(load) == OPR_ADD ){
Modified: trunk/osprey/be/cg/x8664/exp_loadstore.cxx
===================================================================
--- trunk/osprey/be/cg/x8664/exp_loadstore.cxx 2012-03-13 08:20:27 UTC (rev
3881)
+++ trunk/osprey/be/cg/x8664/exp_loadstore.cxx 2012-03-14 08:51:57 UTC (rev
3882)
@@ -1267,17 +1267,29 @@
STB_section(base_sym) /* bug 10097 */)) ){
FmtAssert(!ST_is_thread_local(base_sym),
("Exp_Ldst: thread-local storage NYI under PIC"));
- TN* tmp = base_ofst == 0 ? tn : Build_TN_Like(tn);
- Build_OP( TOP_ld32, tmp, Ebx_TN(),
- Gen_Symbol_TN( base_sym, 0, TN_RELOC_IA32_GOT ),
- &newops );
+
+ // open64.net bug951.
+ // when base_ofst ! = 0, we generate
+ // TN :- lea32 GTN2(%rbx) (sym:base_sym+base_ofst)
+ // instead of
+ // tmp_TN :- ld32 GT2(%bx) (sym:base_sym + 0)
+ // TN :- lea32 tmp_TN base_ofst
+ // this is for consideration of facilitate restoring the register TN
+ // to symbol TN in ASM m constraint.
+ // And also this reduces a temp TN.
+
+ if (base_ofst == 0)
+ Build_OP( TOP_ld32, tn, Ebx_TN(),
+ Gen_Symbol_TN( base_sym, base_ofst, TN_RELOC_IA32_GOT ),
+ &newops );
+ else
+ Build_OP( TOP_lea32, tn, Ebx_TN(),
+ Gen_Symbol_TN( base_sym, base_ofst, TN_RELOC_IA32_GOTOFF
),
+ &newops );
// got address should not alias
Set_OP_no_alias(OPS_last(&newops));
PU_References_GOT = TRUE;
- if( base_ofst != 0 ){
- Build_OP( TOP_lea32, tn, tmp, Gen_Literal_TN(base_ofst, 4), &newops
);
- }
} else {
Build_OP( TOP_ldc32, tn,
Gen_Symbol_TN( base_sym, base_ofst, TN_RELOC_NONE ),
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