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+ set defines if fast fma is available

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git-svn-id: trunk@27768 -
This commit is contained in:
florian 2014-05-11 12:15:27 +00:00
parent 66f711ad09
commit 0bce584bae
1 changed files with 11 additions and 1 deletions
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12
compiler/options.pas
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@ -27,7 +27,7 @@ interface
uses
cfileutl,
globtype,globals,verbose,systems,cpuinfo, comprsrc;
globtype,globals,verbose,systems,cpuinfo,comprsrc;
Type
TOption=class
@ -3542,6 +3542,16 @@ if (target_info.abi = abi_eabihf) then
def_system_macro('FPC_HAS_INTERNAL_BSF');
def_system_macro('FPC_HAS_INTERNAL_BSR');
{$endif}
{ hardware FMA support }
{$if defined(i386) or defined(x86_64)}
if (cpu_capabilities[current_settings.cputype]*[CPUX86_HAS_FMA,CPUX86_HAS_FMA4])<>[]
begin
def_system_macro('FPC_HAS_FAST_FMA_SINGLE');
def_system_macro('FPC_HAS_FAST_FMA_DOUBLE');
end;
{$endif defined(i386) or defined(x86_64)}
{$if defined(arm)}
{ it is determined during system unit compilation if clz is used for bsf or not,
this is not perfect but the current implementation bsf/bsr does not allow another