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tree-ssa-loop-ivopts.c (computation_cost): Start register numbering at LAST_VIRTUAL_REGISTER+1 to avoid possibly using...

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* tree-ssa-loop-ivopts.c (computation_cost): Start register
numbering at LAST_VIRTUAL_REGISTER+1 to avoid possibly using hard
registers in unsupported ways.
* expmed.c (init_expmed): Likewise.

From-SVN: r95373
This commit is contained in:
DJ Delorie 2005-02-21 21:00:56 -05:00 • committed by DJ Delorie
parent 933e5b284a
commit 1d27fed446
3 changed files with 11 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2005-02-21 DJ Delorie <dj@redhat.com>
* tree-ssa-loop-ivopts.c (computation_cost): Start register
numbering at LAST_VIRTUAL_REGISTER+1 to avoid possibly using hard
registers in unsupported ways.
* expmed.c (init_expmed): Likewise.
2005-02-21 Stan Cox <scox@redhat.com>
* config/iq2000/iq2000.h (DWARF_FRAME_RETURN_COLUMN): Change to 31.

3
gcc/expmed.c
View file

@ -145,7 +145,8 @@ init_expmed (void)
memset (&all, 0, sizeof all);
PUT_CODE (&all.reg, REG);
REGNO (&all.reg) = 10000;
/* Avoid using hard regs in ways which may be unsupported. */
REGNO (&all.reg) = LAST_VIRTUAL_REGISTER + 1;
PUT_CODE (&all.plus, PLUS);
XEXP (&all.plus, 0) = &all.reg;

3
gcc/tree-ssa-loop-ivopts.c
View file

@ -2427,7 +2427,8 @@ computation_cost (tree expr)
rtx seq, rslt;
tree type = TREE_TYPE (expr);
unsigned cost;
int regno = 0;
/* Avoid using hard regs in ways which may be unsupported. */
int regno = LAST_VIRTUAL_REGISTER + 1;
walk_tree (&expr, prepare_decl_rtl, &regno, NULL);
start_sequence ();