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40 Commits

Author SHA1 Message Date
Yuriy Sydorov
b2165570de * Fixed missing assignments with the strength reduction optimization. 2021-09-15 21:31:04 +03:00
Yuriy Sydorov
bd4c206472 * Fixed the strength reduction optimization for loops containing 'continue'. 
The compiler now cycles properly with -O3 -OoSTRENGTH.
 2021-09-15 18:07:12 +03:00
Yuriy Sydorov
abe3002b5b * Fixed lack of the calculation code for the strength reduction optimization. 2021-09-15 00:31:32 +03:00
yury
64c586b86d * Removed/ifdefed lots of unused variables. 
git-svn-id: trunk@48384 -
 2021-01-24 12:24:01 +00:00
florian
1ba8255af0 * do not try to unroll a loop if previously an error was thrown, resolves #37475 
git-svn-id: trunk@46435 -
 2020-08-14 18:10:56 +00:00
florian
aca9727418 + OptimizeForLoop: convert for-loops into zero-based backward for-loops if possible, for most architectures, this results in simpler code 
git-svn-id: trunk@44287 -
 2020-03-08 14:30:59 +00:00
florian
ac974c9ab7 * improve is_loop_invariant for load nodes 
git-svn-id: trunk@44252 -
 2020-02-29 21:15:15 +00:00
florian
507fc9c1ff + take care of addn and subn in is_loop_invariant 
git-svn-id: trunk@44251 -
 2020-02-28 20:42:54 +00:00
florian
aabd7c7217 * more fixes for loop strength reduction 
git-svn-id: trunk@43912 -
 2020-01-11 20:37:05 +00:00
florian
a9a711763f * some fixes to loop strength reduction 
git-svn-id: trunk@43911 -
 2020-01-11 16:08:46 +00:00
Jonas Maebe
281b3ad276 * fix case completeness and unreachable code warnings in compiler that would 
be introduced by the next commit

git-svn-id: trunk@42046 -
 2019-05-12 14:29:03 +00:00
florian
21d785e41b * do not unroll loops if the counter variable is accessed outside the current scope 
git-svn-id: trunk@39163 -
 2018-06-03 15:12:48 +00:00
florian
8f472d5212 * check for more controll flow statements before doing loop unrolling 
git-svn-id: trunk@39083 -
 2018-05-21 15:46:02 +00:00
florian
bd27b7635b * also in case of constref make_not_regable with ra_addr_taken must be called, later on in pass_1 this happens anyways 
* for in loops can generate temp. refs as loop counter, so when checking of the address of the for counter is taken, we have to check for a load node

git-svn-id: trunk@38692 -
 2018-04-05 20:09:40 +00:00
florian
c59bd8c29a + calculate loop unrolling using node_count_weighted which takes care of nodes generating no code 
* optimized unrolling calculation

git-svn-id: trunk@38688 -
 2018-04-04 21:39:46 +00:00
florian
512328deee * include loop unrolling in -O3, as it is done carefully, it is beneficial on average 
git-svn-id: trunk@38687 -
 2018-04-04 21:39:44 +00:00
florian
fff6e0ecdb * unroll more aggressively 
git-svn-id: trunk@38686 -
 2018-04-04 21:39:42 +00:00
nickysn
efc5e339d0 * use an enum instead of integer constants to represent inline numbers 
* compinnr.inc include file converted to a unit
* inline number field size stored in ppu increased from byte to longint
* inlines in the parse tree (when written with the -vp option) now printed with
  their enum name, instead of number

git-svn-id: trunk@36174 -
 2017-05-10 14:41:43 +00:00
florian
4731ebeb50 * reset initcode after adding it to the statements list, so further iterations of loop optimization create a new one 
git-svn-id: trunk@33245 -
 2016-03-13 18:19:55 +00:00
florian
b59219b8e0 * when getting rid of a for loop by unrolling, simplify the block afterwards, 
this requires also that the constant is first passed

git-svn-id: trunk@33244 -
 2016-03-13 18:19:53 +00:00
florian
f813703cf3 * fixes several issues with loop unrolling 
git-svn-id: trunk@29362 -
 2014-12-31 15:45:06 +00:00
Jonas Maebe
b57c95043f + support overriding tdef/tsym methods with target-specific functionality: 
o made all (non-abstract) tdef and tsym constructors virtual
   o added c*def/c*sym classref types for every (non-abstract) t*def/t*sym
     class
   o added cpusym unit for every architecture that derives a tcpu*def/tcpu*sym
     class from the base classes, and initialises the c*def/c*sym classes with
     them. This is done so that the llvm target will be able to derive from
     the tcpu*def/sym classes without umpteen ifdefs, and it also means that
     the WPO can devirtualise everything because the c* variables are only
     initialised with one class type
   o replaced all t*def/t*sym constructor calls with c*def/c*sym constructor
     calls

git-svn-id: trunk@27361 -
 2014-03-29 22:31:55 +00:00
florian
1366498255 + nf_addr_taken: it marks nodes which address is taken 
+ check if tnodeflags is 4 bytes or less
* do not do cse on expressions which address is taken

git-svn-id: trunk@26713 -
 2014-02-07 20:40:42 +00:00
florian
30352c7f7b * fix several issues with loop strength reduction to make it working 
* debugging code for strength reduction

git-svn-id: trunk@26694 -
 2014-02-06 20:48:19 +00:00
florian
a0f0d0de40 * make use of the noreturn directive for internalerror 
* clean up of the internalerror procedure variable in the constexp unit

git-svn-id: trunk@26004 -
 2013-11-10 09:01:03 +00:00
florian
d23a5b7c7d * store break/continue usage in a variable 
git-svn-id: trunk@25247 -
 2013-08-11 21:13:24 +00:00
florian
912268b1b9 * make loop unrolling dependent on the cpu optimization type instead of the instruction set 
git-svn-id: trunk@25211 -
 2013-08-03 20:49:20 +00:00
florian
b262b4d76b * fix loop unrolling of for in loops 
git-svn-id: trunk@25209 -
 2013-08-02 21:21:14 +00:00
florian
9773b92cbe * improved for loop unrolling 
git-svn-id: trunk@22320 -
 2012-09-04 21:34:00 +00:00
florian
6c8eed21c4 + implement auto inlining (-Ooautoinline) 
+ implement trashing of local variables if subroutine is inlined
* fix some errors releated to interproc. gotos and inlining
+ node_count function
* inline cannot be used with iochecking and safecall calling conventions
* track inherited usage
* don't inline if inherited is used

git-svn-id: trunk@21335 -
 2012-05-19 13:30:02 +00:00
florian
092153e7ad * handle unrolling of for ... downto ... correctly, resolves #15668 
git-svn-id: trunk@14884 -
 2010-02-10 21:08:54 +00:00
florian
c0d4efed2e * forbid passing derived classes to call by reference parent classes (for objects, this is still allowed), resolves #13135 
git-svn-id: trunk@13551 -
 2009-08-17 21:46:25 +00:00
florian
5e448b47a5 * compilation fixed 
git-svn-id: trunk@12061 -
 2008-11-12 20:42:21 +00:00
yury
b580cbc778 * Removed unused local var. 
git-svn-id: trunk@12057 -
 2008-11-12 18:02:02 +00:00
florian
db196d76c2 + strength reduction for array accesses inside for loops 
* export get_mul_size so we can use it for strength reduction
* ensure loop counter is marked as being written
* typos fixed

git-svn-id: trunk@11825 -
 2008-09-26 18:23:31 +00:00
florian
8d01c330a1 * ttemprefnode -> ctemprefnode 
git-svn-id: trunk@11807 -
 2008-09-18 21:39:38 +00:00
florian
17d3da7266 * variables where the address is taken could have aliases so they aren't invariant 
git-svn-id: trunk@11806 -
 2008-09-18 19:08:57 +00:00
florian
0b5951fa14 + first full implementation of induction variable strength reduction 
git-svn-id: trunk@11805 -
 2008-09-18 18:49:09 +00:00
florian
ecd05a1043 + framework for strength reduction of induction variables 
+ constant multiplications can be eliminated testwise

git-svn-id: trunk@11803 -
 2008-09-18 16:53:36 +00:00
florian
3294c59a73 * renamed optunrol into optloop 
git-svn-id: trunk@11798 -
 2008-09-17 20:21:19 +00:00