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583 Commits

Author SHA1 Message Date
Jonas Maebe
1a97e61619 * factored out fixref from handle_load_store, and handle indirect symbol 
loads for darwin in fixref (used to be done in ncgld, but was removed
    there)

git-svn-id: trunk@22445 -
 2012-09-23 21:25:32 +00:00
masta
c3a91c5022 Remove the postfix check in MovStrMov peephole optimizer for ARM 
We don't need to check for the postfix, PF_NONE/PF_H/PF_B are all ok for us and
can be intermixed. This allows the peephole optimizer to work for
strb and strh instructions.

git-svn-id: trunk@22367 -
 2012-09-10 14:57:43 +00:00
masta
0f40429389 Improve handling of set operations with constant values on ARM 
tarmaddnode.second_cmpsmallset always forced a value into a register
even when it could be represented as a constant, resulting in wasted
registers.

mov r1, #5
cmp r0, r1

If possible we'll now create:
cmp r0, #5

git-svn-id: trunk@22366 -
 2012-09-10 12:37:50 +00:00
florian
7840b4657a * the improved arm optimizer might move instructions around so the old hacky test if a label with its data has been already embedded into the code by checking if the offset is 0 does not work anymore so a new field for tai_label has been introduced for this purpose 
git-svn-id: trunk@22345 -
 2012-09-06 15:12:17 +00:00
florian
03bf93488b * workaround for broken in operator 
git-svn-id: trunk@22329 -
 2012-09-05 15:00:04 +00:00
florian
3b980cae63 * floating point compares use flags as well so allocate flags 
git-svn-id: trunk@22328 -
 2012-09-05 15:00:00 +00:00
florian
de34eab23d + optimize and ...,255/strb ... sequence if possible 
git-svn-id: trunk@22323 -
 2012-09-05 11:24:03 +00:00
florian
93d0033282 * improve AndAnd2And optimization by checking if the first destination register is allocated after the second and 
git-svn-id: trunk@22322 -
 2012-09-05 11:23:05 +00:00
florian
8a6c65b008 * fix r22319: hp1 must have the same condition as p 
git-svn-id: trunk@22321 -
 2012-09-05 09:05:26 +00:00
florian
2f1989c1a6 * hp1 can have any condition in this case so don't access hp1.condition because it 
is not guranteed that hp1 is actually a tai_instruction before calling MatchInstruction

git-svn-id: trunk@22319 -
 2012-09-04 18:58:28 +00:00
florian
5facc6ad5e * BsrX(0) should return 255 instead of $ffffffff 
git-svn-id: trunk@22316 -
 2012-09-04 15:16:59 +00:00
florian
d67af82228 * patch by Jeppe Johansen: Thumb2-only targets don't support the BLX <label>, and have to use BL <label>, resolves #22770 
git-svn-id: trunk@22314 -
 2012-09-04 14:57:26 +00:00
florian
d63ebe6464 * bsr implementation for armv5+ using clz 
git-svn-id: trunk@22310 -
 2012-09-04 12:56:38 +00:00
florian
91156f8652 + cpuflag CPUARM_HAS_CLZ for arm 
git-svn-id: trunk@22309 -
 2012-09-04 12:56:27 +00:00
florian
59012afe26 * better heuristics to decide when a mul by a constant shall be replaced by shift/add/sub sequences 
git-svn-id: trunk@22300 -
 2012-09-03 13:39:52 +00:00
florian
2f8027c63f + more sophisticated code to optimize multiplications on arm 
+ the multiplication optimization needs a popcnt function
+ simple test

git-svn-id: trunk@22299 -
 2012-09-03 13:39:45 +00:00
masta
d8af83d252 Introduce a version of MatchInstruction for multiple instructions 
It is the same as the normal MatchInstruction function but supports to
be called with a set of TAsmOps instead of a single op.

git-svn-id: trunk@22231 -
 2012-08-24 15:54:36 +00:00
florian
6b73bc45c5 * check constant for being a valid offset 
git-svn-id: trunk@22230 -
 2012-08-24 09:16:47 +00:00
florian
58a85e79ce * set index register correctly * index register might not be changed 
git-svn-id: trunk@22229 -
 2012-08-24 09:16:38 +00:00
florian
245d8286d5 + LookForPostindexedPattern 
git-svn-id: trunk@22228 -
 2012-08-24 09:16:26 +00:00
masta
012da673a8 Use MatchInstruction in OpCmp2OpS 
MatchInstruction keeps the code a bit more readable and compact.

git-svn-id: trunk@22226 -
 2012-08-23 23:08:26 +00:00
florian
a016bc5ced * white space change 
git-svn-id: trunk@22224 -
 2012-08-23 21:04:31 +00:00
florian
f2ccd6e400 * when doing the AddSubLdr2Ldr optimization check also if the source register of the add is modified before the load 
git-svn-id: trunk@22223 -
 2012-08-23 21:04:21 +00:00
florian
4e2de05667 * don't apply the AddSubLdr2Ldr optimization if the base register in the reference is used/modified during the ldr/str 
git-svn-id: trunk@22222 -
 2012-08-23 21:04:11 +00:00
florian
d89b742109 * apply Add/SubLdr2Ldr only if no condition flags are involved 
git-svn-id: trunk@22221 -
 2012-08-23 21:04:02 +00:00
florian
73d540e7b5 * unsigned byte ldr/str allow also an offset of max. +/-4095 
git-svn-id: trunk@22220 -
 2012-08-23 21:03:52 +00:00
florian
9d20a73986 * optimize also str/ldrb/h/d 
git-svn-id: trunk@22219 -
 2012-08-23 21:03:44 +00:00
florian
1b3e03d72d + DEBUG_AOPTCPU to turn off peephole optimizer messages 
git-svn-id: trunk@22218 -
 2012-08-23 21:03:34 +00:00
florian
8a20ccc5f9 + Add/SubLdr2Ldr optimization 
git-svn-id: trunk@22217 -
 2012-08-23 21:03:24 +00:00
masta
b9fa9da629 Small fixes to OpCmp2OpS 
1.) For UMULL and UMLAL support we would have to make sure the following
code checks RdHi and RdLo, which is currently not supported.
The former code would transform the following

  umull r0, r1, r2, r3
  cmp   r0, #0
  bne   .LSomething

into

  umulls r0,r1,r2,r3
  bne    .LSomething

which is wrong. UMULL has a 64bit result in r1+r0 and checks the full 64bit for 0
before setting the Z flag.

2.) Support MLA.

3.) Support MI/PL/NE/EQ for all instructions. As all of them are setting
the N and Z flags in the same way only based on the result of the
operation not on its input values.

N:=Result[31];
Z:=Result = 0;

Wurst

git-svn-id: trunk@22213 -
 2012-08-23 14:22:29 +00:00
florian
3ad32b6e4e * opcode spelling fixed 
git-svn-id: trunk@22204 -
 2012-08-23 08:55:07 +00:00
florian
935985d0c0 * checked and updated valid opcode for OpCmp2OpS optimization 
git-svn-id: trunk@22203 -
 2012-08-23 08:55:03 +00:00
florian
70009e8ed1 * move flag allocation item 
git-svn-id: trunk@22202 -
 2012-08-23 08:54:58 +00:00
florian
45383fd32d + a lot missing flag allocs/deallocs added 
git-svn-id: trunk@22201 -
 2012-08-23 08:54:52 +00:00
florian
2d2c66467c + optimize op ... / cmp .... when possible 
git-svn-id: trunk@22200 -
 2012-08-23 08:54:47 +00:00
florian
a92ca7c456 * adjust the reg. allocations of the target register in RemoveSuperfluousMove 
git-svn-id: trunk@22194 -
 2012-08-22 19:52:37 +00:00
florian
3d7b603d11 * get rid or move the allocation of the replaced register if possible 
git-svn-id: trunk@22193 -
 2012-08-22 19:52:30 +00:00
florian
77e579f59f * RemoveSuperfluousMove uses FindRegDeAlloc to find out if the register used in the move can be removed 
* RemoveSuperfluousMove fixes partially the register allocation changes caused by the mov

git-svn-id: trunk@22192 -
 2012-08-22 19:52:23 +00:00
florian
5fd457e586 * when determining of a register is used after an instruction, new allocs should not be taken into account 
git-svn-id: trunk@22189 -
 2012-08-22 19:52:03 +00:00
florian
c0425c48fd * make use of GetNextInstructionUsingReg 
git-svn-id: trunk@22186 -
 2012-08-22 19:51:40 +00:00
florian
f3f5be2af1 * RemoveSuperfluousMove should not mess with moves targetting lr or pc 
git-svn-id: trunk@22185 -
 2012-08-22 19:51:31 +00:00
florian
93eb20d407 + GetNextInstructionUsingReg 
git-svn-id: trunk@22184 -
 2012-08-22 19:51:19 +00:00
florian
55e6da6d28 * make cpubase for arm use inlining 
git-svn-id: trunk@22183 -
 2012-08-22 19:51:08 +00:00
florian
d8161c185c + track usage of flags by using a new register RS_/NR_DEFAULTFLAGS 
git-svn-id: trunk@22179 -
 2012-08-22 19:37:51 +00:00
florian
2a14394cf5 * cleaned up scheduler code, created own scheduler class to avoid unneeded passes through the assembler 
git-svn-id: trunk@22133 -
 2012-08-19 19:15:34 +00:00
florian
a3bf956c33 * improved main loop of TCpuPreRegallocScheduler.PeepHoleOptPass1Cpu 
* reordered conditions in scheduler main loop so they abort potentially quicker

git-svn-id: trunk@22132 -
 2012-08-19 19:13:49 +00:00
florian
765fb18679 + add a description to the cpuflags where I know the exact meaning/definition 
git-svn-id: trunk@22119 -
 2012-08-17 20:45:46 +00:00
florian
54e2b40ab4 * revert the parameter type change of the last commit, it was an overleft from a failed fix attempt 
git-svn-id: trunk@22116 -
 2012-08-17 19:36:37 +00:00
florian
ba6ba52e7f * instruction scheduling is pretty slow so make it a level 3 optimization for now 
git-svn-id: trunk@22115 -
 2012-08-17 19:36:29 +00:00
florian
45eafd3e65 * fix MovMov optimization if the second mov is a mov rX,rX 
git-svn-id: trunk@22114 -
 2012-08-17 19:36:22 +00:00