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| author | Richard Biener <rguenther@suse.de> | 2021-01-29 13:58:28 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-01-29 14:01:21 +0100 |
| commit | 0833e3e1ff14d2e1847373d770887b11e89a623c (patch) | |
| tree | 6d04dde819c5a53c0275767e04a3db31d4baee5f /gcc | |
| parent | cb52e59e33845152cef6f9042a142a246e9447f6 (diff) | |
| download | gcc-0833e3e1ff14d2e1847373d770887b11e89a623c.zip gcc-0833e3e1ff14d2e1847373d770887b11e89a623c.tar.gz gcc-0833e3e1ff14d2e1847373d770887b11e89a623c.tar.bz2 | |
change unit of --param max-gcse-memory to kB
This changes it from bytes to kB since its value is limited to
2147483648.
2021-01-29 Richard Biener <rguenther@suse.de>
* doc/invoke.texi (--param max-gcse-memory): Document unit
of size.
* gcse.c (gcse_or_cprop_is_too_expensive): Adjust.
* params.opt (--param max-gcse-memory): Adjust default and
document unit of size.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/doc/invoke.texi | 2 | ||||
| -rw-r--r-- | gcc/gcse.c | 4 | ||||
| -rw-r--r-- | gcc/params.opt | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index d9e49c4..a89d385 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -13075,7 +13075,7 @@ should be removed when the delay slot code is rewritten to maintain the control-flow graph. @item max-gcse-memory -The approximate maximum amount of memory that can be allocated in +The approximate maximum amount of memory in @code{kB} that can be allocated in order to perform the global common subexpression elimination optimization. If more memory than specified is required, the optimization is not done. @@ -4007,14 +4007,14 @@ gcse_or_cprop_is_too_expensive (const char *pass) /* If allocating memory for the dataflow bitmaps would take up too much storage it's better just to disable the optimization. */ - if (memory_request > (unsigned HOST_WIDE_INT)param_max_gcse_memory) + if (memory_request / 1024 > (unsigned HOST_WIDE_INT)param_max_gcse_memory) { warning (OPT_Wdisabled_optimization, "%s: %d basic blocks and %d registers; " "increase %<--param max-gcse-memory%> above " HOST_WIDE_INT_PRINT_UNSIGNED, pass, n_basic_blocks_for_fn (cfun), max_reg_num (), - memory_request); + memory_request / 1024); return true; } diff --git a/gcc/params.opt b/gcc/params.opt index cfed980..dff8a33 100644 --- a/gcc/params.opt +++ b/gcc/params.opt @@ -514,8 +514,8 @@ Common Joined UInteger Var(param_max_gcse_insertion_ratio) Init(20) Param Optimi The maximum ratio of insertions to deletions of expressions in GCSE. -param=max-gcse-memory= -Common Joined UInteger Var(param_max_gcse_memory) Init(134217728) Param Optimization -The maximum amount of memory to be allocated by GCSE. +Common Joined UInteger Var(param_max_gcse_memory) Init(131072) Param Optimization +The maximum amount of memory to be allocated by GCSE, in kilobytes. -param=max-goto-duplication-insns= Common Joined UInteger Var(param_max_goto_duplication_insns) Init(8) Param Optimization |