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Commit 90e34bd6 by Diego Novillo Committed by Diego Novillo
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re PR tree-optimization/19080 (ICE while compiling linux kernel) 


	PR tree-optimization/19080

	Merge from tree-cleanup-branch

	* tree-flow-inline.h (clear_call_clobbered): New function.
	* tree-ssa-alias.c (init_alias_info): Call it.


testsuite/ChangeLog

	PR tree-optimization/19080
	* gcc.c-torture/compile/pr19080.c: New test.

From-SVN: r92423
parent c20a99d0
Showing with 152 additions and 15 deletions
gcc/ChangeLog
2004-12-20 Diego Novillo <dnovillo@redhat.com>
PR tree-optimization/19080
Merge from tree-cleanup-branch
* tree-flow-inline.h (clear_call_clobbered): New function.
* tree-ssa-alias.c (init_alias_info): Call it.
2004-12-20 Richard Henderson <rth@redhat.com>
* config/i386/i386.md (sse2_movsd): Remove ix86_binary_operator_ok
......
gcc/testsuite/ChangeLog
2004-12-20 Diego Novillo <dnovillo@redhat.com>
PR tree-optimization/19080
* gcc.c-torture/compile/pr19080.c: New test.
2004-12-20 Steven Bosscher <stevenb@suse.de>
* gcc.dg/20041219-1.c: New test.
......
gcc/testsuite/gcc.c-torture/compile/pr19080.c 0 → 100644
typedef union { int ioport; volatile char *maddr; } bus_space_handle_t;
struct scb { unsigned short *hscb; };
struct ahd_softc
{
int tags[2];
bus_space_handle_t bshs[2];
int dst_mode;
int src_mode;
int flags;
};
void outb(int, int);
int foo_inb(struct ahd_softc*);
int foo_int_int (int, int);
int ahd_inb(struct ahd_softc*);
int ahd_scb_active_in_fifo (void);
void ahd_flush_qoutfifo (struct ahd_softc *ahd, struct scb *scb)
{
int src, dst, *a = &src, *b = &dst; *a = 1, *b = 1;
int bb, p;
if (ahd->src_mode == 1)
{ int src, dst, *a = &src, *b = &dst; *a = 1, *b = 1;}
foo_int_int (ahd->src_mode, ahd->dst_mode);
p = 1;
if (ahd->src_mode == 2 && ahd->dst_mode == p)
{
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
ahd->src_mode = 1;
ahd->dst_mode = 2;
while ((ahd_inb (ahd) & 0x01) != 0)
{
p = 1;
if (ahd->src_mode == 2 && ahd->dst_mode == p)
{
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
ahd->src_mode = 1;
ahd->dst_mode = 2;
if (ahd_scb_active_in_fifo () == 0)
continue;
p = 1;
if (ahd->src_mode == 2 && ahd->dst_mode == p)
{
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
ahd->src_mode = 1;
ahd->dst_mode = 2;
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if ((ahd->flags & 1) != 0)
foo_inb (ahd);
if ((ahd->flags & 1) != 0)
foo_inb (ahd);
if ((ahd->flags & 1) != 0)
foo_inb (ahd);
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if ((ahd->flags & 1) != 0)
foo_inb (ahd);
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
bb = (*(scb->hscb));
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
bb = (*(scb->hscb));
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
p = 1;
if (ahd->src_mode == 2 && ahd->dst_mode == p)
{
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
ahd->src_mode = 1;
ahd->dst_mode = 2;
if (ahd->src_mode == 2 && ahd->dst_mode == dst)
{
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
if (ahd->tags[0] == 1) *(ahd->bshs[0].maddr);
outb (1, ahd->bshs[0].ioport );
}
ahd->src_mode = 1;
ahd->dst_mode = 2;
ahd->flags |= 1;
}
gcc/tree-flow-inline.h
......@@ -625,6 +625,18 @@ mark_call_clobbered (tree var)
ssa_ro_call_cache_valid = false;
}
/* Clear the call-clobbered attribute from variable VAR. */
static inline void
clear_call_clobbered (tree var)
{
var_ann_t ann = var_ann (var);
if (ann->mem_tag_kind != NOT_A_TAG)
DECL_EXTERNAL (var) = 0;
bitmap_clear_bit (call_clobbered_vars, ann->uid);
ssa_call_clobbered_cache_valid = false;
ssa_ro_call_cache_valid = false;
}
/* Mark variable VAR as being non-addressable. */
static inline void
mark_non_addressable (tree var)
......
gcc/tree-ssa-alias.c
......@@ -437,7 +437,6 @@ init_alias_info (void)
if (aliases_computed_p)
{
unsigned i;
bitmap_iterator bi;
basic_block bb;
/* Make sure that every statement has a valid set of operands.
......@@ -453,19 +452,6 @@ init_alias_info (void)
get_stmt_operands (bsi_stmt (si));
}
/* Clear the call-clobbered set. We are going to re-discover
call-clobbered variables. */
EXECUTE_IF_SET_IN_BITMAP (call_clobbered_vars, 0, i, bi)
{
tree var = referenced_var (i);
/* Variables that are intrinsically call-clobbered (globals,
local statics, etc) will not be marked by the aliasing
code, so we can't remove them from CALL_CLOBBERED_VARS. */
if (!is_call_clobbered (var))
bitmap_clear_bit (call_clobbered_vars, var_ann (var)->uid);
}
/* Similarly, clear the set of addressable variables. In this
case, we can just clear the set because addressability is
only computed here. */
......@@ -474,9 +460,19 @@ init_alias_info (void)
/* Clear flow-insensitive alias information from each symbol. */
for (i = 0; i < num_referenced_vars; i++)
{
var_ann_t ann = var_ann (referenced_var (i));
tree var = referenced_var (i);
var_ann_t ann = var_ann (var);
ann->is_alias_tag = 0;
ann->may_aliases = NULL;
/* Since we are about to re-discover call-clobbered
variables, clear the call-clobbered flag. Variables that
are intrinsically call-clobbered (globals, local statics,
etc) will not be marked by the aliasing code, so we can't
remove them from CALL_CLOBBERED_VARS. */
if (ann->mem_tag_kind != NOT_A_TAG || !is_global_var (var))
clear_call_clobbered (var);
}
/* Clear flow-sensitive points-to information from each SSA name. */
......
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