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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2007-04-17 18:42:29 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-04-17 16:42:29 +0000 |
| commit | a154b43a811a710525c1da93ea4f97c97c9327f9 (patch) | |
| tree | 0a31c59ebc8695e61c56119d3a3890c7117e0a43 /gcc/testsuite/gcc.dg/loop-7.c | |
| parent | faf28b3a89f32229935b0f60383423315121eb8d (diff) | |
| download | gcc-a154b43a811a710525c1da93ea4f97c97c9327f9.zip gcc-a154b43a811a710525c1da93ea4f97c97c9327f9.tar.gz gcc-a154b43a811a710525c1da93ea4f97c97c9327f9.tar.bz2 | |
re PR rtl-optimization/31360 (RTL loop invariant is not aggressive enough)
PR rtl-optimization/31360
* cfgloopanal.c (target_small_cost, target_pres_cost): Removed.
(target_reg_cost): New.
(init_set_costs): Initialize target_reg_cost. Add comments
regarding the rationale of the costs.
(global_cost_for_size): Renamed to...
(estimate_reg_pressure_cost): ... and simplify. Decrease importance
of register pressure.
* tree-ssa-loop-ivopts.c (ivopts_global_cost_for_size): Use
estimate_reg_pressure_cost. Add number of ivs.
(determine_set_costs): Dump target_reg_cost.
* loop-invariant.c (gain_for_invariant): Use
estimate_reg_pressure_cost. Removed n_inv_uses argument.
(best_gain_for_invariant, find_invariants_to_move): Remove
n_inv_uses.
* cfgloop.h (target_small_cost, target_pres_cost): Removed.
(target_reg_cost): Declare.
(global_cost_for_size): Declaration removed.
(estimate_reg_pressure_cost): Declare.
* gcc.dg/loop-7.c: New test.
From-SVN: r123919
Diffstat (limited to 'gcc/testsuite/gcc.dg/loop-7.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/loop-7.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/loop-7.c b/gcc/testsuite/gcc.dg/loop-7.c new file mode 100644 index 0000000..0457add --- /dev/null +++ b/gcc/testsuite/gcc.dg/loop-7.c @@ -0,0 +1,16 @@ +/* PR rtl-optimization/31360 */ + +/* { dg-do compile { target { powerpc*-*-* } } } */ +/* { dg-options "-O1 -fdump-rtl-loop2_invariant" } */ + +void f(int *a) +{ + int i; + for (i = 0;i<100;i++) + a[i] = 0; +} + +/* Load of 0 is moved out of the loop. */ +/* { dg-final { scan-rtl-dump-times "Decided" 1 "loop2_invariant" } } */ +/* { dg-final { cleanup-rtl-dump "loop2_invariant" } } */ + |