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| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2003-05-12 00:54:33 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2003-05-11 22:54:33 +0000 |
| commit | 91f4cfe34425362425867d896bcb831df6926580 (patch) | |
| tree | cada37c3708d1388d2a80d6f7cbd1591975d8a65 /gcc/loop-unroll.c | |
| parent | ac38d8da36c73f77adf130019fa0c247fdca64a1 (diff) | |
| download | gcc-91f4cfe34425362425867d896bcb831df6926580.zip gcc-91f4cfe34425362425867d896bcb831df6926580.tar.gz gcc-91f4cfe34425362425867d896bcb831df6926580.tar.bz2 | |
cfgloopanal.c (num_loop_insns, [...]): Count only real insns.
* cfgloopanal.c (num_loop_insns, average_num_loop_insns): Count only
real insns.
* loop-unroll.c (unroll_loop_runtime_iterations): Remove superfluous
condition.
From-SVN: r66700
Diffstat (limited to 'gcc/loop-unroll.c')
| -rw-r--r-- | gcc/loop-unroll.c | 55 |
1 files changed, 26 insertions, 29 deletions
diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c index efecd4d..e8509de 100644 --- a/gcc/loop-unroll.c +++ b/gcc/loop-unroll.c @@ -878,36 +878,33 @@ unroll_loop_runtime_iterations (loops, loop) DLTHE_FLAG_UPDATE_FREQ)) abort (); - if (i != n_peel) - { - /* Create item for switch. */ - j = n_peel - i - (extra_zero_check ? 0 : 1); - p = REG_BR_PROB_BASE / (i + 2); - - preheader = loop_split_edge_with (loop_preheader_edge (loop), - NULL_RTX, loops); - label = block_label (preheader); - start_sequence (); - do_compare_rtx_and_jump (copy_rtx (niter), GEN_INT (j), EQ, 0, - GET_MODE (desc->var), NULL_RTX, NULL_RTX, - label); - jump = get_last_insn (); - JUMP_LABEL (jump) = label; - REG_NOTES (jump) - = gen_rtx_EXPR_LIST (REG_BR_PROB, - GEN_INT (p), REG_NOTES (jump)); + /* Create item for switch. */ + j = n_peel - i - (extra_zero_check ? 0 : 1); + p = REG_BR_PROB_BASE / (i + 2); + + preheader = loop_split_edge_with (loop_preheader_edge (loop), + NULL_RTX, loops); + label = block_label (preheader); + start_sequence (); + do_compare_rtx_and_jump (copy_rtx (niter), GEN_INT (j), EQ, 0, + GET_MODE (desc->var), NULL_RTX, NULL_RTX, + label); + jump = get_last_insn (); + JUMP_LABEL (jump) = label; + REG_NOTES (jump) + = gen_rtx_EXPR_LIST (REG_BR_PROB, + GEN_INT (p), REG_NOTES (jump)); - LABEL_NUSES (label)++; - branch_code = get_insns (); - end_sequence (); - - swtch = loop_split_edge_with (swtch->pred, branch_code, loops); - set_immediate_dominator (loops->cfg.dom, preheader, swtch); - swtch->succ->probability = REG_BR_PROB_BASE - p; - e = make_edge (swtch, preheader, - swtch->succ->flags & EDGE_IRREDUCIBLE_LOOP); - e->probability = p; - } + LABEL_NUSES (label)++; + branch_code = get_insns (); + end_sequence (); + + swtch = loop_split_edge_with (swtch->pred, branch_code, loops); + set_immediate_dominator (loops->cfg.dom, preheader, swtch); + swtch->succ->probability = REG_BR_PROB_BASE - p; + e = make_edge (swtch, preheader, + swtch->succ->flags & EDGE_IRREDUCIBLE_LOOP); + e->probability = p; } if (extra_zero_check) |