Chris Lattner
40c0fca632
Refactor load/op/store folding into it's own method, no functionality changes.
...
llvm-svn: 19641
2005-01-17 19:25:26 +00:00
Chris Lattner
88bbcfc893
Implement a target independent optimization to codegen arguments only into
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the basic block that uses them if possible. This is a big win on X86, as it
lets us fold the argument loads into instructions and reduce register pressure
(by not loading all of the arguments in the entry block).
For this (contrived to show the optimization) testcase:
int %argtest(int %A, int %B) {
%X = sub int 12345, %A
br label %L
L:
%Y = add int %X, %B
ret int %Y
}
we used to produce:
argtest:
mov %ECX, DWORD PTR [%ESP + 4]
mov %EAX, 12345
sub %EAX, %ECX
mov %EDX, DWORD PTR [%ESP + 8]
.LBBargtest_1: # L
add %EAX, %EDX
ret
now we produce:
argtest:
mov %EAX, 12345
sub %EAX, DWORD PTR [%ESP + 4]
.LBBargtest_1: # L
add %EAX, DWORD PTR [%ESP + 8]
ret
This also fixes the FIXME in the code.
BTW, this occurs in real code. 164.gzip shrinks from 8623 to 8608 lines of
.s file. The stack frame in huft_build shrinks from 1644->1628 bytes,
inflate_codes shrinks from 116->108 bytes, and inflate_block from 2620->2612,
due to fewer spills.
Take that alkis. :-)
llvm-svn: 19639
2005-01-17 17:55:19 +00:00
Chris Lattner
2348abc421
Fix a major regression last night that prevented us from producing [mem] op= reg
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operations.
The body of the if is less indented but unmodified in this patch.
llvm-svn: 19638
2005-01-17 17:49:14 +00:00
Chris Lattner
49a1f3a109
Refactor code into a new method.
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llvm-svn: 19635
2005-01-17 17:15:02 +00:00
Chris Lattner
e2fd07b43d
Make methods private, add a method.
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llvm-svn: 19634
2005-01-17 17:14:43 +00:00
Chris Lattner
adb669ab1f
Codegen this:
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int %foo(int %X) {
%T = add int %X, 13
%S = mul int %T, 3
ret int %S
}
as this:
mov %ECX, DWORD PTR [%ESP + 4]
lea %EAX, DWORD PTR [%ECX + 2*%ECX + 39]
ret
instead of this:
mov %ECX, DWORD PTR [%ESP + 4]
mov %EAX, %ECX
add %EAX, 13
imul %EAX, %EAX, 3
ret
llvm-svn: 19633
2005-01-17 06:48:02 +00:00
Tanya Lattner
5a10531cf8
Added tmp instructions to preserve ssa.
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llvm-svn: 19632
2005-01-17 06:47:26 +00:00
Chris Lattner
51590b615c
Fix test/Regression/CodeGen/X86/2005-01-17-CycleInDAG.ll and 132.ijpeg.
...
Do not fold a load into an operation if it will induce a cycle in the DAG.
Repeat after me: dAg.
llvm-svn: 19631
2005-01-17 06:26:58 +00:00
Chris Lattner
a5f6a52471
New testcase for a problem that occurred in 132.ijpeg
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llvm-svn: 19630
2005-01-17 06:25:59 +00:00
Chris Lattner
3402945d52
Delete PHI nodes that are not dead but are locked in a cycle of single
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useness.
llvm-svn: 19629
2005-01-17 05:10:15 +00:00
Chris Lattner
de6b1ca556
Move code out of indentation one level to make it easier to read.
...
Disable the xform for < > cases. It turns out that the following is being
miscompiled:
bool %test(sbyte %S) {
%T = cast sbyte %S to uint
%V = setgt uint %T, 255
ret bool %V
}
llvm-svn: 19628
2005-01-17 03:20:02 +00:00
Chris Lattner
783a9d8893
Add methods
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llvm-svn: 19627
2005-01-17 02:24:59 +00:00
Chris Lattner
f1e85bec5a
Do not fold a load into a comparison that is used by more than one place.
...
The comparison will probably be folded, so this is not ok to do.
This fixed 197.parser.
llvm-svn: 19624
2005-01-17 01:34:14 +00:00
Reid Spencer
603b94aed8
sysconfdir -> PROJ_etcdir
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llvm-svn: 19623
2005-01-17 00:42:31 +00:00
Chris Lattner
1b8c8fe020
Do not codegen 'xor bool, true' as 'not reg'. not reg inverts the upper bits
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of the bytereg. This fixes yacr2, 300.twolf and probably others.
llvm-svn: 19622
2005-01-17 00:23:16 +00:00
Chris Lattner
6d7f927699
Fix typos noticed by Gabor Greif, thanks Gabor!
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llvm-svn: 19621
2005-01-17 00:12:04 +00:00
Chris Lattner
46dac4394c
Set up the shift and setcc types.
...
If we emit a load because we followed a token chain to get to it, try to
fold it into its single user if possible.
llvm-svn: 19620
2005-01-17 00:00:33 +00:00
Chris Lattner
4c88cc95ee
Shift and setcc types default to the pointer type.
...
llvm-svn: 19619
2005-01-16 23:59:48 +00:00
Chris Lattner
8dd332e4e5
Add comments
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Add fields to hold the result type of setcc operations and shift amounts.
llvm-svn: 19618
2005-01-16 23:59:30 +00:00
Chris Lattner
ec55e3e529
Implement legalize of call nodes.
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llvm-svn: 19617
2005-01-16 19:46:48 +00:00
Alkis Evlogimenos
5d7bd7411a
Fix llvm-java project autconfiguration.
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llvm-svn: 19616
2005-01-16 09:44:58 +00:00
Tanya Lattner
fea188af7e
Added paramters to a few functions in order to allow me to change the functions to preserve SSA
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llvm-svn: 19615
2005-01-16 08:51:10 +00:00
Chris Lattner
9ffc59287e
* Adjust to changes in TargetLowering interfaces.
...
* Remove custom promotion for bool and byte select ops. Legalize now
promotes them for us.
* Allow folding ConstantPoolIndexes into EXTLOAD's, useful for float immediates.
* Declare which operations are not supported better.
* Add some hacky code for TRUNCSTORE to pretend that we have truncstore
for i16 types. This is useful for testing promotion code because I can
just remove 16-bit registers all together and verify that programs work.
llvm-svn: 19614
2005-01-16 07:34:08 +00:00
Chris Lattner
0eca430af1
Revamp supported ops. Instead of just being supported or not, we now keep
...
track of how to deal with it, and provide the target with a hook that they
can use to legalize arbitrary operations in arbitrary ways.
Implement custom lowering for a couple of ops, implement promotion for select
operations (which x86 needs).
llvm-svn: 19613
2005-01-16 07:29:19 +00:00
Chris Lattner
835a5efef3
add method stub
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llvm-svn: 19612
2005-01-16 07:28:41 +00:00
Chris Lattner
907534af24
Don't mash stuff together.
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llvm-svn: 19611
2005-01-16 07:28:31 +00:00
Chris Lattner
b49d2a7b0f
Use enums, move virtual dtor out of line.
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llvm-svn: 19610
2005-01-16 07:28:11 +00:00
Chris Lattner
e38f72316d
Revamp supported ops. Instead of just being supported or not, we now keep
...
track of how to deal with it, and provide the target with a hook that they
can use to legalize arbitrary operations in arbitrary ways.
llvm-svn: 19609
2005-01-16 07:27:49 +00:00
Reid Spencer
cf01eefc07
* Revise the projects section and make reference to Projects.html
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* the dist-clean target no longer implies a check
llvm-svn: 19608
2005-01-16 07:18:31 +00:00
Reid Spencer
5bf1026416
Don't confuse the LLVM_OBJ_DIR and the PROJ_OBJ_DIR because there might be
...
a symbolic link making the autoconf name for the directory (LLVM_OBJ_ROOT)
and the "make" name for the directory (PROJ_OBJ_ROOT) different.
llvm-svn: 19607
2005-01-16 06:53:48 +00:00
Chris Lattner
0f4f239899
Implement some more missing promotions.
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llvm-svn: 19606
2005-01-16 05:06:12 +00:00
Chris Lattner
e88e660817
Fix bugpoint
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llvm-svn: 19605
2005-01-16 04:23:22 +00:00
Chris Lattner
be2a427f51
cycles_t -> CycleCount_t
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llvm-svn: 19604
2005-01-16 04:20:30 +00:00
Jeff Cohen
5971039a26
Add some .cvsignores to the win32 hierarchy to account for generated files
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llvm-svn: 19603
2005-01-16 03:18:23 +00:00
Reid Spencer
5d058e0ec8
Provide support for HP/UX aCC compiler's variant of hash_map and hash_set
...
(RogueWave). These are implemented in rw/stdex/hash_map.h and
rw/stdex/hash_set.h on HP/UX.
llvm-svn: 19600
2005-01-16 02:58:39 +00:00
Reid Spencer
7ca6d9a743
Fix locations of libraries and executables to match makefiles.
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llvm-svn: 19599
2005-01-16 02:38:06 +00:00
Reid Spencer
9f8c7b0720
BUILD_* to PROJ_*
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llvm-svn: 19598
2005-01-16 02:35:47 +00:00
Chris Lattner
742b77f9af
Clarify assertion.
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llvm-svn: 19597
2005-01-16 02:23:34 +00:00
Chris Lattner
4517b8af97
Add assertions.
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llvm-svn: 19596
2005-01-16 02:23:22 +00:00
Chris Lattner
9f8589f4b3
Add support for promoted registers being live across blocks.
...
llvm-svn: 19595
2005-01-16 02:23:07 +00:00
Reid Spencer
25e0c1e8d7
Update per new Makefile requirements for projects
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llvm-svn: 19594
2005-01-16 02:21:42 +00:00
Reid Spencer
afa1cb9e11
Rename BUILD_* to PROJ_*
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llvm-svn: 19592
2005-01-16 02:21:29 +00:00
Reid Spencer
e928014032
Update documentation on how to set up a project
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llvm-svn: 19591
2005-01-16 02:21:18 +00:00
Reid Spencer
4ce9f4ecc8
Several changes:
...
* Rename BUILD_* to PROJ_*
* Differentiate between LLVM's Makefile.conf and the project's
* Use project specific install locations
llvm-svn: 19590
2005-01-16 02:20:54 +00:00
Reid Spencer
bf9b4a1a2a
Several changes:
...
* Get rid of variables that are duplicates of autoconf variables.
* Rename BUILD_* to PROJ_*
* Define some project related install locations
* Don't assume LLVM's configured values are the project's
llvm-svn: 19589
2005-01-16 02:20:42 +00:00
Reid Spencer
bf8f3f5e13
Make this file capable of being used by both LLVM and its projects
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llvm-svn: 19588
2005-01-16 02:20:30 +00:00
Tanya Lattner
66cf1a6f82
Fixed a couple of instructions that broke SSA.
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llvm-svn: 19587
2005-01-16 02:14:17 +00:00
Chris Lattner
605b9a23a2
Improve compatiblity with HPUX on Itanium, patch by Duraid Madina
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llvm-svn: 19586
2005-01-16 01:31:31 +00:00
Chris Lattner
dfb3741f64
Improve compatibility with aCC on HPUX. Patch by Duraid Madina
...
llvm-svn: 19585
2005-01-16 01:22:18 +00:00
Chris Lattner
06c297f8ca
Set up identity transforms.
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llvm-svn: 19584
2005-01-16 01:20:18 +00:00