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259 Commits

Author SHA1 Message Date
florian
c0f20e0e5f * do not join register deallocations/allocations as it makes no use and causes later on trouble in 
the assembler optimizer as register allocations are not correct, resolves #33565
(cherry picked from commit c6659d62f8)

# Conflicts:
#	.gitattributes
 2021-11-28 15:22:20 +01:00
florian
a76d096254 * workaround missing optimizer capabilites of the fixes branch to fix avr compilation with -CriotR 2021-11-21 22:57:24 +01:00
florian
3328f991c7 * AVR: fixes pushing and handling of stack passed parameters 
git-svn-id: trunk@43983 -
(cherry picked from commit 96a4cda03b)
 2021-10-24 12:40:37 +02:00
Yuriy Sydorov
ebc55c0f4e * If in a move instruction "MOV reg1,reg2" one of the registers must be 
spilled, but reg1 and reg2 are coalesced, then this is a no-op
  instruction and no spilling is needed.

(cherry picked from commit b43ee41090)
 2021-09-09 22:23:28 +02:00
Yuriy Sydorov
0ca0cd9d0d * Remove register allocations of coalesced registers if the alias 
register is spilled.

(cherry picked from commit b96057adeb)
 2021-09-07 21:43:16 +02:00
florian
ea32ddd5b2 * avoid overflows of execution weight 
git-svn-id: trunk@39623 -
 2018-08-16 20:45:36 +00:00
florian
37a5716819 * reuse more sparc code for sparc64 
git-svn-id: trunk@36961 -
 2017-08-20 17:20:43 +00:00
florian
7c0f72d9af * avoid spill coalesce of registers with itself, resolves issue #31926 
git-svn-id: trunk@36363 -
 2017-05-28 08:59:57 +00:00
florian
344970879e * spill coalesce uses get_alias 
git-svn-id: trunk@36359 -
 2017-05-28 08:59:49 +00:00
florian
db49b2f62b * coalesce spilled registers if possible to avoid mem->mem moves 
git-svn-id: trunk@36325 -
 2017-05-25 12:44:35 +00:00
florian
4b17ad80d0 * reduce initial size of movelist, 16 is enough for most cases 
git-svn-id: trunk@36324 -
 2017-05-25 12:44:33 +00:00
florian
b1dff29cbf * removed unused units 
git-svn-id: trunk@36165 -
 2017-05-09 19:53:14 +00:00
yury
60e21e4222 * Reverted r34524 - workaround for compiling with -gc. It is not needed anymore since cycle completes with -gc. 
git-svn-id: trunk@35537 -
 2017-03-07 09:30:16 +00:00
florian
4242949453 * write more information into the interference graph 
git-svn-id: trunk@34801 -
 2016-11-05 23:06:04 +00:00
Károly Balogh
e0e90fffc4 make rgobj.uses_registers also return true, when the rg never allocated an imreg, but there were direct cpu register allocations. this at least fixes some address regvar trashing on 68k in relation to syscalls' explicit paralocs 
git-svn-id: trunk@34777 -
 2016-11-03 01:45:34 +00:00
pierre
c7d79acd61 Allow compilation of compiler with -gc option 
git-svn-id: trunk@34524 -
 2016-09-13 08:47:53 +00:00
florian
2a28f5a85d * update used_in_proc only in trgobj.translate_registers, before it might cause unnecessary pushes of actually unused registers 
git-svn-id: trunk@33526 -
 2016-04-15 21:30:14 +00:00
sergei
c0eafe38aa * Make trgobj.uses_registers method return True when registers of appropriate type are specified in list of used registers (after assembler blocks), but not used otherwise. This is a missing piece of r30011, enabling code generator to actually save/restore such registers. Resolves #28421. 
git-svn-id: trunk@32610 -
 2015-12-07 19:12:20 +00:00
florian
199b1861d6 * fix wrong comparisons in trgobj.conservative to enable better coalescing, 
before this patch, k was calculated wrong most of the time

git-svn-id: trunk@31439 -
 2015-08-28 18:49:04 +00:00
florian
31709b1b43 * check registers of ait_regalloc for a valid color when translating and compiling with -dextdebug 
git-svn-id: trunk@30438 -
 2015-04-05 19:06:06 +00:00
Jonas Maebe
e12dff9a5e * support top_para in trgllvm.get_spill_temp() 
git-svn-id: trunk@30426 -
 2015-04-04 14:29:06 +00:00
Jonas Maebe
e750678f37 * factored out spilling code that deals with operand types into virtual 
methods so they can be overridden by platform-specific variants
    for platform-specific operand types

git-svn-id: trunk@30425 -
 2015-04-04 14:29:03 +00:00
Jonas Maebe
197e5194b9 * don't crash if we have to spill a register of the last instruction in an 
asmlist

git-svn-id: trunk@30402 -
 2015-04-01 15:43:10 +00:00
Jonas Maebe
67b8aceaee * synchronized with privatetrunk till r30095 
git-svn-id: branches/hlcgllvm@30101 -
 2015-03-05 20:32:15 +00:00
sergei
31fddaafe8 + New subtype of tai_regalloc, "ra_markused". It marks a physical register as used in procedure, triggering saving/restoring that register if it is non-volatile. 
git-svn-id: trunk@30010 -
 2015-02-25 21:38:23 +00:00
Jonas Maebe
5c75b6dd6b * synchronised with trunk up till r28402 
git-svn-id: branches/hlcgllvm@28403 -
 2014-08-13 16:04:30 +00:00
sergei
9b9ea15d68 + m68k: initial implementation of do_spill_replace (supports only MOVE instructions for now). Tested with qemu for Coldfire target. 
git-svn-id: trunk@28274 -
 2014-07-30 01:20:59 +00:00
Jonas Maebe
bacd303208 * synchronized with trunk up to r27758 
git-svn-id: branches/hlcgllvm@27779 -
 2014-05-12 16:12:34 +00:00
Jonas Maebe
246caf3526 * never alias/coalesce cpu registers that are not usable by the register 
allocator (such as stack/framepointers) with virtual registers, otherwise
    they can get changed in case the virtual register gets changed (read-only
    use would be ok, but we don't keep track of which virtual registers are
    only read

git-svn-id: trunk@27104 -
 2014-03-11 23:18:45 +00:00
Jonas Maebe
e9268a0a14 * synchronised with trunk up till r26975 
git-svn-id: branches/hlcgllvm@26976 -
 2014-03-06 21:36:58 +00:00
florian
23c724f885 * prevent a temp. register allocated during spilling being immediately spilled again, resolves #25164 
git-svn-id: trunk@26930 -
 2014-03-02 19:47:05 +00:00
florian
829764e96b + replace registers to spill in mov instructions and convert them into ldr/str 
git-svn-id: trunk@26677 -
 2014-02-05 18:19:41 +00:00
Károly Balogh
587acf6452 fix infinite spilling on m68k, patch by Florian, additional IE workaround by me, based on a similar hack in the ARM cg... 
git-svn-id: trunk@26465 -
 2014-01-15 02:09:02 +00:00
Károly Balogh
70f9b098e0 no longer define a segment field for m68k 
git-svn-id: trunk@26464 -
 2014-01-15 02:06:10 +00:00
sergei
d2a9308181 + SPARC: implemented register spill replacement. 
git-svn-id: trunk@26364 -
 2014-01-03 08:14:43 +00:00
Jonas Maebe
b7803ab974 + llvm support for the register allocator. While llvm works with virtual 
registers itself, it requires them to be in SSA form. Therefore we
    spill all registers that are written more than once to memory.
  + support in the generic register allocator for generating code that is
    SSA-safe
  + spilling helpers for llvm

git-svn-id: branches/hlcgllvm@26044 -
 2013-11-11 11:15:47 +00:00
Jonas Maebe
5ef93e85b8 + added extra "orgsupreg" parameter to do_spill_read/do_spill_written/ 
do_spill_replace routines, will be necessary by llvm register
    allocator to determine the tdef corresponding to that register
  * replaced uses of taicpu with tai_cpu_abstract_sym in the register
    allocator so that it can work both with taicpu and taillvm instructions

git-svn-id: branches/hlcgllvm@26043 -
 2013-11-11 11:15:43 +00:00
Jonas Maebe
5599870a4e * moved the register colouring and spill temp allocation to a virtual method, 
and made the related data structures protected instead of private, so they
    can be overridden

git-svn-id: branches/hlcgllvm@26042 -
 2013-11-11 11:15:38 +00:00
svenbarth
32a18199c5 Print aX or aregX for address registers if DEBUG_REGISTERLIFE is defined. 
rgobj.pas, trgobj.generate_interference_graph:
  * pass "regtype" instead of "R_INTREGISTER" to newreg so that "aX" or "aregX" is print for address registers

git-svn-id: trunk@25665 -
 2013-10-05 21:48:28 +00:00
florian
dc567acc9a * accumulate register weight instead of taking only the maximum 
git-svn-id: trunk@25433 -
 2013-09-07 17:44:41 +00:00
florian
c2f7ccb253 * coalesce more aggressive 
git-svn-id: trunk@25177 -
 2013-07-26 19:06:20 +00:00
sergei
8b8553991a + MIPS: prevent coalescing written-to registers with $sp,$fp,$zero and $at. 
+ Implemented subset of "spill replace" functionality, replacing moves from/to spilled registers with loads/stores to spill locations. This helps to reduce amount of instructions.

git-svn-id: trunk@24900 -
 2013-06-15 04:04:08 +00:00
florian
23c84fd27c * more fixes for segment register usage 
git-svn-id: trunk@24584 -
 2013-05-24 19:02:09 +00:00
florian
b85addb451 + color segment register 
git-svn-id: trunk@24579 -
 2013-05-24 17:57:28 +00:00
svenbarth
d15304c25e Also check for the type of the register when replacing it. In certain circumstances this can still lead to access to invalid memory resulting either in an access violation or invalid registers. 
git-svn-id: trunk@22779 -
 2012-10-19 19:35:45 +00:00
pierre
322b793506 Try to do something for m68k integer/address registers; not working yet :!( 
git-svn-id: trunk@22771 -
 2012-10-19 15:52:57 +00:00
svenbarth
2ada9a528b Fix a critical bug in the register allocator (at least for CPUs with seperate address 
registers like the M68k): check whether the register type of the base/index register
of the instruction's reference is the same as the one we are doing register allocation
for. Otherwise the address registers can become corrupted.

git-svn-id: trunk@22748 -
 2012-10-18 20:12:24 +00:00
florian
95830d5a4a + DEBUG_REGISTERLIFE define 
git-svn-id: trunk@22396 -
 2012-09-15 17:20:57 +00:00
florian
f75e39e660 + aliasing of registers, allows to split live ranges 
git-svn-id: trunk@22395 -
 2012-09-15 17:20:53 +00:00
florian
f9dd5bf5e6 + live_start and live_end_properties 
git-svn-id: trunk@22109 -
 2012-08-17 19:35:51 +00:00