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function.c (schedule_fixup_var_refs): New function, broken out of put_reg_into_stack. 

* function.c (schedule_fixup_var_refs): New function, broken out
	of put_reg_into_stack.
	(put_reg_into_stack): Use it.
	(put_var_into_stack): In CONCAT case, fixup up references for
	components only after fixing up references to the whole concat.
testsuite:
	* gcc.c-torture/execute/20000804-1.c: New test.

From-SVN: r35495
This commit is contained in:
J"orn Rennecke 2000-08-04 22:06:49 +00:00 committed by Joern Rennecke
parent 2c3c49dec3
commit 018577e426
4 changed files with 64 additions and 14 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
Fri Aug 4 23:01:58 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
* function.c (schedule_fixup_var_refs): New function, broken out
of put_reg_into_stack.
(put_reg_into_stack): Use it.
(put_var_into_stack): In CONCAT case, fixup up references for
components only after fixing up references to the whole concat.
2000-08-04 Rodney Brown <RodneyBrown@pmsc.com>
* alias.c (mark_constant_function): Use INSN_P.

54
gcc/function.c
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@ -253,6 +253,9 @@ static void put_reg_into_stack PARAMS ((struct function *, rtx, tree,
enum machine_mode, enum machine_mode,
int, unsigned int, int,
struct hash_table *));
static void schedule_fixup_var_refs PARAMS ((struct function *, rtx, tree,
enum machine_mode,
struct hash_table *));
static void fixup_var_refs PARAMS ((rtx, enum machine_mode, int,
struct hash_table *));
static struct fixup_replacement
@ -1405,20 +1408,25 @@ put_var_into_stack (decl)
else if (GET_CODE (reg) == CONCAT)
{
/* A CONCAT contains two pseudos; put them both in the stack.
We do it so they end up consecutive. */
We do it so they end up consecutive.
We fixup references to the parts only after we fixup references
to the whole CONCAT, lest we do double fixups for the latter
references. */
enum machine_mode part_mode = GET_MODE (XEXP (reg, 0));
tree part_type = type_for_mode (part_mode, 0);
rtx lopart = XEXP (reg, 0);
rtx hipart = XEXP (reg, 1);
#ifdef FRAME_GROWS_DOWNWARD
/* Since part 0 should have a lower address, do it second. */
put_reg_into_stack (function, XEXP (reg, 1), part_type, part_mode,
part_mode, volatilep, 0, usedp, 0);
put_reg_into_stack (function, XEXP (reg, 0), part_type, part_mode,
part_mode, volatilep, 0, usedp, 0);
put_reg_into_stack (function, hipart, part_type, part_mode,
part_mode, volatilep, 0, 0, 0);
put_reg_into_stack (function, lopart, part_type, part_mode,
part_mode, volatilep, 0, 0, 0);
#else
put_reg_into_stack (function, XEXP (reg, 0), part_type, part_mode,
part_mode, volatilep, 0, usedp, 0);
put_reg_into_stack (function, XEXP (reg, 1), part_type, part_mode,
part_mode, volatilep, 0, usedp, 0);
put_reg_into_stack (function, lopart, part_type, part_mode,
part_mode, volatilep, 0, 0, 0);
put_reg_into_stack (function, hipart, part_type, part_mode,
part_mode, volatilep, 0, 0, 0);
#endif
/* Change the CONCAT into a combined MEM for both parts. */
@ -1431,6 +1439,13 @@ put_var_into_stack (decl)
/* Prevent sharing of rtl that might lose. */
if (GET_CODE (XEXP (reg, 0)) == PLUS)
XEXP (reg, 0) = copy_rtx (XEXP (reg, 0));
if (usedp)
{
schedule_fixup_var_refs (function, reg, TREE_TYPE (decl),
promoted_mode, 0);
schedule_fixup_var_refs (function, lopart, part_type, part_mode, 0);
schedule_fixup_var_refs (function, hipart, part_type, part_mode, 0);
}
}
else
return;
@ -1490,11 +1505,22 @@ put_reg_into_stack (function, reg, type, promoted_mode, decl_mode, volatile_p,
MEM_SET_IN_STRUCT_P (reg,
AGGREGATE_TYPE_P (type) || MEM_IN_STRUCT_P (new));
MEM_ALIAS_SET (reg) = get_alias_set (type);
if (used_p)
schedule_fixup_var_refs (function, reg, type, promoted_mode, ht);
}
/* Now make sure that all refs to the variable, previously made
when it was a register, are fixed up to be valid again. */
if (used_p && function != 0)
/* Make sure that all refs to the variable, previously made
when it was a register, are fixed up to be valid again.
See function above for meaning of arguments. */
static void
schedule_fixup_var_refs (function, reg, type, promoted_mode, ht)
struct function *function;
rtx reg;
tree type;
enum machine_mode promoted_mode;
struct hash_table *ht;
{
if (function != 0)
{
struct var_refs_queue *temp;
@ -1506,7 +1532,7 @@ put_reg_into_stack (function, reg, type, promoted_mode, decl_mode, volatile_p,
temp->next = function->fixup_var_refs_queue;
function->fixup_var_refs_queue = temp;
}
else if (used_p)
else
/* Variable is local; fix it up now. */
fixup_var_refs (reg, promoted_mode, TREE_UNSIGNED (type), ht);
}

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
Fri Aug 4 23:00:50 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
* gcc.c-torture/execute/20000804-1.c: New test.
2000-08-04 Joseph S. Myers <jsm28@cam.ac.uk>
* gcc.dg/c90-printf-1.c, gcc.dg/c94-printf-1.c: New tests.

12
gcc/testsuite/gcc.c-torture/compile/20000804-1.c Normal file
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@ -0,0 +1,12 @@
/* Copyright (C) 2000 Free Software Foundation */
__complex__ long long f ()
{
int i[99];
__complex__ long long v;
v += f ();
asm("": "+r" (v) : "r" (0), "r" (1));
v = 2;
return v;
g (&v);
}