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| author | Eric Botcazou <ebotcazou@adacore.com> | 2016-09-01 15:56:13 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2016-09-01 15:56:13 +0000 |
| commit | 0a6b05234a625802bb1f75ee66e61b404da20434 (patch) | |
| tree | ad1c9b7f642244178757ab66921230a45896508c /gcc/ipa-inline-analysis.c | |
| parent | d87a85c67b9f4e424c9660753429e8252d265ee3 (diff) | |
| download | gcc-0a6b05234a625802bb1f75ee66e61b404da20434.zip gcc-0a6b05234a625802bb1f75ee66e61b404da20434.tar.gz gcc-0a6b05234a625802bb1f75ee66e61b404da20434.tar.bz2 | |
ipa-inline-analysis.c (param_change_prob): Get to the base object first in all cases.
* ipa-inline-analysis.c (param_change_prob): Get to the base object
first in all cases.
From-SVN: r239943
Diffstat (limited to 'gcc/ipa-inline-analysis.c')
| -rw-r--r-- | gcc/ipa-inline-analysis.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/gcc/ipa-inline-analysis.c b/gcc/ipa-inline-analysis.c index c8b1fef..132779d 100644 --- a/gcc/ipa-inline-analysis.c +++ b/gcc/ipa-inline-analysis.c @@ -2183,28 +2183,33 @@ param_change_prob (gimple *stmt, int i) { tree op = gimple_call_arg (stmt, i); basic_block bb = gimple_bb (stmt); - tree base; - /* Global invariants neve change. */ - if (is_gimple_min_invariant (op)) + if (TREE_CODE (op) == WITH_SIZE_EXPR) + op = TREE_OPERAND (op, 0); + + tree base = get_base_address (op); + + /* Global invariants never change. */ + if (is_gimple_min_invariant (base)) return 0; + /* We would have to do non-trivial analysis to really work out what is the probability of value to change (i.e. when init statement is in a sibling loop of the call). We do an conservative estimate: when call is executed N times more often than the statement defining value, we take the frequency 1/N. */ - if (TREE_CODE (op) == SSA_NAME) + if (TREE_CODE (base) == SSA_NAME) { int init_freq; if (!bb->frequency) return REG_BR_PROB_BASE; - if (SSA_NAME_IS_DEFAULT_DEF (op)) + if (SSA_NAME_IS_DEFAULT_DEF (base)) init_freq = ENTRY_BLOCK_PTR_FOR_FN (cfun)->frequency; else - init_freq = gimple_bb (SSA_NAME_DEF_STMT (op))->frequency; + init_freq = gimple_bb (SSA_NAME_DEF_STMT (base))->frequency; if (!init_freq) init_freq = 1; @@ -2213,9 +2218,7 @@ param_change_prob (gimple *stmt, int i) else return REG_BR_PROB_BASE; } - - base = get_base_address (op); - if (base) + else { ao_ref refd; int max; @@ -2256,7 +2259,6 @@ param_change_prob (gimple *stmt, int i) else return REG_BR_PROB_BASE; } - return REG_BR_PROB_BASE; } /* Find whether a basic block BB is the final block of a (half) diamond CFG |