17f1f1a56c
Split the SSE readme items out into their own README.
...
llvm-svn: 28400
2006-05-19 20:51:43 +00:00
427ea6f0a7
Split FP-stack notes out of the main readme. Next up: splitting out SSE.
...
llvm-svn: 28399
2006-05-19 20:45:52 +00:00
240f846495
Move a target-independent note out of the X86 readme.
...
llvm-svn: 28398
2006-05-19 20:45:08 +00:00
d6a25a08d1
Particularly ugly code.
...
llvm-svn: 28397
2006-05-19 19:41:33 +00:00
4203df25b8
new testcase
...
llvm-svn: 28396
2006-05-19 19:34:09 +00:00
2452c94df4
Fix a doxygen problem and break lines at 80 columns
...
llvm-svn: 28395
2006-05-19 19:09:46 +00:00
3949d32155
Fix some doxygen usage in these headers.
...
llvm-svn: 28394
2006-05-19 19:07:54 +00:00
feca91a516
These can be transformed into lea as well. Not that we use this feature
...
currently...
llvm-svn: 28393
2006-05-19 18:43:41 +00:00
7b8feb27c8
- Use exact-width integer types, e.g. int32_t, to avoid confusion.
...
- Fix a couple of minor bugs in i16immSExt8 and i16immZExt8.
- Added loadiPTR fragment used for indirect jumps and calls.
llvm-svn: 28392
2006-05-19 18:40:54 +00:00
c0a65d5ac8
Use class tags instead of struct tags. The coding standards specify this
...
for public classes for improved win32 compatibility.
llvm-svn: 28391
2006-05-19 17:17:12 +00:00
1c8ef9832f
Explicitly specify MOV32mi can only be used store 32-bit GV, etc.
...
llvm-svn: 28390
2006-05-19 07:30:36 +00:00
886e8f35aa
Now that iPTR is a fully resolved type. We end up losing the type check for
...
patterns that look like this:
def : Pat<(i32 (X86Wrapper tconstpool :$dst)), (MOV32ri tconstpool :$dst)>;
InsertOneTypeCheck should copy the type from the resolved pattern to the
unresolved one as long as there types are different.
llvm-svn: 28389
2006-05-19 07:24:32 +00:00
b15597b59a
implement movri
...
add a stub LowerFORMAL_ARGUMENTS
llvm-svn: 28388
2006-05-18 21:45:49 +00:00
f3cbd7ef31
Added a Flags field to TargetOperandInfo. Currently the only flag is
...
M_LOOK_UP_PTR_REG_CLASS which allows the register class of the operand to be
resolved via a callback at runtime.
llvm-svn: 28387
2006-05-18 20:44:26 +00:00
d8e2f6ebc1
lib/Target/Target.td
...
llvm-svn: 28386
2006-05-18 20:42:07 +00:00
8d88fc5ee4
Improve error output. Use the third parameter of the "catch" command to
...
capture the error output from the exec option. This generally will capture
the stderr messages generated by the tools. This information is then
printed if the test fails. This helps to recognize more quickly what the
error was. Otherwise, this information is lost.
llvm-svn: 28385
2006-05-18 19:42:16 +00:00
4cda95b32f
add a note
...
llvm-svn: 28384
2006-05-18 18:26:13 +00:00
f66e89721d
add a note
...
llvm-svn: 28383
2006-05-18 17:38:16 +00:00
b90055ef24
Fix a bogus gcc warning
...
llvm-svn: 28382
2006-05-18 17:29:34 +00:00
03524c63ff
ImmMask should be 3 for a two-bit field; Compact X86II
...
llvm-svn: 28381
2006-05-18 06:27:15 +00:00
08aecf56e7
Fix some think-o's in my last commit. Thanks to Chris for pointing them out.
...
llvm-svn: 28380
2006-05-18 05:46:08 +00:00
9eb1a268c1
Change Module to use TargetData-compatible strings internally.
...
This is part of the on-going work on PR 761.
llvm-svn: 28379
2006-05-18 02:10:31 +00:00
305c49579c
getCalleeSaveRegs and getCalleeSaveRegClasses are no long TableGen'd.
...
llvm-svn: 28378
2006-05-18 00:12:58 +00:00
297e1cb10a
Remove CalleeSavedRegisters from class Target.
...
llvm-svn: 28377
2006-05-18 00:09:53 +00:00
fe72285033
Don't generate getCalleeSaveReg and getCalleeSaveRegClasses anymore.
...
llvm-svn: 28376
2006-05-18 00:08:46 +00:00
b848c2457e
This test is buggy: printf is a varargs function. This fixes the test with
...
the PPC JIT
llvm-svn: 28375
2006-05-17 23:43:56 +00:00
a22a5b382f
Make some changes suggested by Chris:
...
1. Remove the LLVM_DO_NOT_BUILD feature (not needed any more)
2. Ensure that lib/VMCore gets built first. This needs to be done because
VMCore now uses tblgen to generate the Intrinsics header which are
needed in other libraries. In parallel builds, this can cause problems.
llvm-svn: 28374
2006-05-17 22:55:35 +00:00
fc08d5a2a8
Fix a stupid bug when parsing TargetData strings.
...
llvm-svn: 28373
2006-05-17 21:56:02 +00:00
b390c47b4b
Use DIRS here instead of PARALLEL_DIRS, as VMCore has to be built before the
...
other dirs (for Intrinsics.gen). :(
llvm-svn: 28372
2006-05-17 21:54:48 +00:00
e59042d004
Use generic iPTR instead i32 to represent pointer type.
...
llvm-svn: 28371
2006-05-17 21:21:41 +00:00
7fa58c38c0
Another entry
...
llvm-svn: 28370
2006-05-17 21:20:51 +00:00
1df84eb2d1
Remove the llvm-db and bugpoint restrictions from the win32 platform so
...
they can be compiled with ming32. The use of fork(2) has been removed.
llvm-svn: 28369
2006-05-17 21:20:50 +00:00
dcec882286
Remove PointerType from class Target
...
llvm-svn: 28368
2006-05-17 21:20:27 +00:00
e4cb4768fa
Declare that lowerinvoke doesn't interact with other lowering passes.
...
Patch written by Domagoj Babic!
llvm-svn: 28367
2006-05-17 21:05:27 +00:00
318a68e1ee
Typo
...
llvm-svn: 28366
2006-05-17 20:55:51 +00:00
7949c2e8b2
Fix the result of the call to use a correct vbitconvert. There is no need to
...
use getPackedTypeBreakdown at all here.
llvm-svn: 28365
2006-05-17 20:49:36 +00:00
938155ca57
Correct a previous patch which broke CodeGen/PowerPC/vec_call.ll
...
llvm-svn: 28364
2006-05-17 20:43:21 +00:00
f5ef47fe74
Remove PointerType from target definition. Use abstract type MVT::iPTR to
...
represent pointer type.
llvm-svn: 28363
2006-05-17 20:37:59 +00:00
fabc691ce4
PR736 has already been fixed. Remove XFAIL marker.
...
llvm-svn: 28362
2006-05-17 20:21:44 +00:00
961ef9363d
New test case for vector type argument pass by value.
...
llvm-svn: 28361
2006-05-17 20:20:04 +00:00
0f524f2050
Fix call_adj.ll
...
llvm-svn: 28360
2006-05-17 19:24:49 +00:00
446dbcb5e4
Added sanity check for obviously bogus immediates
...
llvm-svn: 28359
2006-05-17 19:24:31 +00:00
f8e448f06f
Added regression that breaks gcc4 build
...
llvm-svn: 28358
2006-05-17 19:23:31 +00:00
8c6b234ce8
Should pass by reference.
...
llvm-svn: 28357
2006-05-17 19:07:40 +00:00
00bce3f2f4
Another entry
...
llvm-svn: 28356
2006-05-17 19:05:31 +00:00
6353807fdc
Add a note about a note
...
llvm-svn: 28355
2006-05-17 19:02:25 +00:00
eb755fc1b3
Make PPC call lowering more aggressive, making the isel matching code simple
...
enough to be autogenerated.
llvm-svn: 28354
2006-05-17 19:00:46 +00:00
19aaaca293
Another typo. Pointed out by Nate Begeman.
...
llvm-svn: 28353
2006-05-17 18:22:14 +00:00
751cd7653d
Fixed a LowerCallTo and LowerArguments bug. They were introducing illegal
...
VBIT_VECTOR nodes. There were some confusion about the semantics of
getPackedTypeBreakdown(). e.g. for <4 x f32> it returns 1 and v4f32, not 4,
and f32.
llvm-svn: 28352
2006-05-17 18:16:39 +00:00
6dcec44fec
Fix an obvious bug in getPackedTypeBreakdown. Return 1 if type is legal.
...
llvm-svn: 28351
2006-05-17 18:10:06 +00:00
163bdaba24
Fix a mis-leading comment.
...
llvm-svn: 28350
2006-05-17 18:08:20 +00:00
2e266807c3
Add a CloneModule call that exposes the mapping of values from the old module
...
to the new module. Patch provided by Nick Lewycky!
llvm-svn: 28349
2006-05-17 18:05:35 +00:00
62f1b83c0e
When we legalize target nodes, do not use getNode to create a new node,
...
use UpdateNodeOperands to just update the operands! This is important because
getNode will allocate a new node if the node returns a flag and this breaks
assumptions in the legalizer that you can legalize some things multiple times
and get exactly the same results.
This latent bug was exposed by my ppc patch last night, and this fixes
gsm/toast.
llvm-svn: 28348
2006-05-17 18:00:08 +00:00
a1cec0106a
Add an assertion, avoid some unneeded work for each call. No functionality
...
change.
llvm-svn: 28347
2006-05-17 17:55:45 +00:00
b1e9e37c58
Switch PPC over to a call-selection model where the lowering code creates
...
the copyto/fromregs instead of making the PPCISD::CALL selection code create
them. This vastly simplifies the selection code, and moves the ABI handling
parts into one place.
llvm-svn: 28346
2006-05-17 06:01:33 +00:00
f897d2f274
add an external symbol testcase
...
llvm-svn: 28345
2006-05-17 04:20:13 +00:00
174db05199
new test for various forms of calls
...
llvm-svn: 28344
2006-05-17 03:57:31 +00:00
5a37460533
test for support to pass/return vectors to calls.
...
llvm-svn: 28343
2006-05-17 00:18:23 +00:00
b7552a88d6
3 changes, 2 of which are cleanup one of which changes codegen:
...
1. Rearrange code a bit so that the special case doesn't require indenting lots
of code.
2. Add comments describing PPC calling convention.
3. Only round up to 56-bytes of stack space for an outgoing call if the callee
is varargs. This saves a bit of stack space.
llvm-svn: 28342
2006-05-17 00:15:40 +00:00
f058f5aef1
implement passing/returning vector regs to calls, at least non-varargs calls.
...
llvm-svn: 28341
2006-05-16 23:54:25 +00:00
b77ba73a29
Add support for calls that pass and return legal vectors.
...
llvm-svn: 28340
2006-05-16 23:39:44 +00:00
aa40ec1b32
Instead of implementing LowerCallTo directly, let the default impl produce an
...
ISD::CALL node, then custom lower that. This means that we only have to handle
LEGAL call operands/results, not every possible type. This allows us to
simplify the call code, shrinking it by about 1/3.
llvm-svn: 28339
2006-05-16 22:56:08 +00:00
aaa23d953f
Add a new ISD::CALL node, make the default impl of TargetLowering::LowerCallTo
...
produce it.
llvm-svn: 28338
2006-05-16 22:53:20 +00:00
e33580e5b4
Add a new CALL node.
...
llvm-svn: 28337
2006-05-16 22:52:27 +00:00
84f9f380f2
There is now a default impl of this method
...
llvm-svn: 28336
2006-05-16 22:52:11 +00:00
26e2fcd8b1
Simplify the argument counting logic by only incrementing the index.
...
llvm-svn: 28335
2006-05-16 18:58:15 +00:00
76c47b50e7
Simplify the dead argument handling code.
...
llvm-svn: 28334
2006-05-16 18:54:32 +00:00
318f0d2122
Vector args passed in registers don't reserve stack space.
...
llvm-svn: 28333
2006-05-16 18:51:52 +00:00
f4d08dd0d3
Another testcase that shouldn't need vrsave twiddling
...
llvm-svn: 28332
2006-05-16 18:23:55 +00:00
4302e8fb67
Switch the PPC backend over to using FORMAL_ARGUMENTS for formal argument
...
handling. This makes the lower argument code significantly simpler (we
only need to handle legal argument types).
Incidentally, this also implements support for vector argument registers,
so long as they are not on the stack.
llvm-svn: 28331
2006-05-16 18:18:50 +00:00
20eb2ce871
this should be 128 I think
...
llvm-svn: 28330
2006-05-16 17:45:23 +00:00
1dc9ec5874
Move this code to a common place
...
llvm-svn: 28329
2006-05-16 17:42:15 +00:00
a1f0b95ce4
Remove this xfail-d test, which doesn't make any sense
...
llvm-svn: 28328
2006-05-16 17:22:42 +00:00
c7df70db57
Implement the custom lowering hook right, returning values for all of the
...
arguments at once.
llvm-svn: 28327
2006-05-16 17:14:26 +00:00
7b8b8bbbf9
Fix a bug I introduced yesterday, which broke functions with *no* arguments.
...
llvm-svn: 28326
2006-05-16 17:08:35 +00:00
40f1b1321d
Make sure to default ${prefix} to /usr/local if the user didn't specify it.
...
This assists with getting around configure's late binding values so that
our LLVM variables don't end up with a "NONE" prefix.
llvm-svn: 28325
2006-05-16 08:53:32 +00:00
9fee442e63
X86 integer register classes naming changes. Make them consistent with FP, vector classes.
...
llvm-svn: 28324
2006-05-16 07:21:53 +00:00
d985d66781
Allow patterns to refer to physical registers that belong to multiple
...
register classes.
llvm-svn: 28323
2006-05-16 07:05:30 +00:00
540c1b95f1
Make sure that $(CXX.Flags) is passed to the linker so that the same options
...
with which source is compiled are used when linking. This matters when a
project is using the LLVM makefiles and overrides CXXFLAGS to specify new
flags to use.
llvm-svn: 28322
2006-05-16 06:51:02 +00:00
aa10fb7ebe
Make this print the right start pointer
...
llvm-svn: 28321
2006-05-16 06:45:50 +00:00
3d82699605
Add a chain to FORMAL_ARGUMENTS. This is a minimal port of the X86 backend,
...
it doesn't currently use/maintain the chain properly. Also, make the
X86ISelLowering.cpp file 80-col clean.
llvm-svn: 28320
2006-05-16 06:45:34 +00:00
0f89bbd6cc
Add a chain to FORMAL_ARGUMENTS.
...
llvm-svn: 28319
2006-05-16 06:43:59 +00:00
788db2c812
Replace "../whatever.td" with "whatever.td", so that out-of-tree backends
...
can just add lib/Target to TableGen includes.
llvm-svn: 28318
2006-05-16 06:39:36 +00:00
1f54156a01
For PR778:
...
Improve doxygenification of this header file.
llvm-svn: 28317
2006-05-16 06:27:31 +00:00
1053658517
When linking, make sure the project libraries are linked before the LLVM
...
libraries. This ensures that the project's libraries (which most likely
depend on LLVM libraries) come first on the command line and can thus be
resolved by the LLVM libraries that appear later.
llvm-svn: 28316
2006-05-16 06:25:14 +00:00
957cb6733a
Move function-live-in-handling code from the sdisel code to the scheduler.
...
This code should be emitted after legalize, so it can't be in sdisel.
Note that the EmitFunctionEntryCode hook should be updated to operate on the
DAG. The X86 backend is the only one currently using this hook.
llvm-svn: 28315
2006-05-16 06:10:58 +00:00
52d0c78de8
Print the vreg that livein physregs are live in
...
llvm-svn: 28314
2006-05-16 05:55:30 +00:00
5f0edfb849
Legalize FORMAL_ARGUMENTS nodes correctly, we don't want to legalize them once
...
for each argument.
llvm-svn: 28313
2006-05-16 05:49:56 +00:00
1f01aa0f28
Add my homepage, as a test that commit access works
...
llvm-svn: 28312
2006-05-16 05:36:15 +00:00
d2ca9abf57
Fit in 80 cols
...
llvm-svn: 28311
2006-05-16 04:20:24 +00:00
4abf33f56e
add an abort after every assert(0)
...
llvm-svn: 28310
2006-05-15 22:34:39 +00:00
26bb7c467f
For PR777:
...
Add an additional catch block to ensure that this function can't throw any
exceptions, even one's we're not expecting.
llvm-svn: 28309
2006-05-15 22:12:42 +00:00
3d01718c70
Upgrade in preparation for doxygen 1.4.4. The config file format changed,
...
there are new/different css styles to support, and the footer was woefully
out of date.
llvm-svn: 28308
2006-05-15 21:36:13 +00:00
fce45ffcd6
Improve comment, patch provided by Vladimir Prus!
...
llvm-svn: 28307
2006-05-15 18:35:02 +00:00
30b868d697
Update dox, patch by Vladimir Prus!
...
llvm-svn: 28306
2006-05-15 17:26:46 +00:00
d02dd3c388
Improve comments, patch provided by Vladimir Prus!
...
llvm-svn: 28305
2006-05-15 17:25:05 +00:00
0bc5119270
Doxygenify the comments, bringing the file level comments down to be attached
...
with the class that it documents. Patch suggested by Vladimir Prus.
llvm-svn: 28304
2006-05-15 16:12:01 +00:00
04a9e38369
Remove some dead code, identified by coverity.
...
llvm-svn: 28303
2006-05-15 05:48:32 +00:00
e58e5082c8
Add myself to the credits.
...
llvm-svn: 28302
2006-05-15 05:13:07 +00:00
ffdc24b847
added a skeleton of the ARM backend
...
llvm-svn: 28301
2006-05-14 22:18:28 +00:00
b37e4105c2
added myself to CREDITS.TXT
...
llvm-svn: 28300
2006-05-14 20:29:25 +00:00
ab81de7514
Free memory allocated by copy_env.
...
llvm-svn: 28299
2006-05-14 19:17:28 +00:00
2bd9d8eaca
print a nice error if bugpoint gets an error reading inputs. Bug identified
...
by coverity.
llvm-svn: 28298
2006-05-14 19:15:56 +00:00
90abfe4bd9
Fix a bug found by inspection.
...
llvm-svn: 28297
2006-05-14 19:11:40 +00:00
a782bbe827
improve comment.
...
llvm-svn: 28296
2006-05-14 19:10:22 +00:00
5eae951603
Catch a potentially thrown exception.
...
llvm-svn: 28295
2006-05-14 19:08:39 +00:00
a8a550f1e3
Improve documentation on throwing, it is not complete still though. :(
...
llvm-svn: 28294
2006-05-14 19:07:07 +00:00
63539389ca
LoadLibraryPermanently can theoretically throw an exception. Do not propagate
...
it out of 'ExecutionEngine::create'. This fixes a problem reported by coverity.
llvm-svn: 28293
2006-05-14 19:01:55 +00:00
78b8e977b2
Bug noticed, by inspection. Filename can be null.
...
llvm-svn: 28292
2006-05-14 19:00:53 +00:00
f64397ba1a
This function is not documented as throwing an exception and callers don't
...
handle it. Just silently fail.
llvm-svn: 28291
2006-05-14 18:53:09 +00:00
96749c4cec
inverted logic, caught by coverity
...
llvm-svn: 28290
2006-05-14 18:46:52 +00:00
35515557c7
remove some dead code identified by coverity
...
llvm-svn: 28289
2006-05-14 18:45:44 +00:00
44f90c93e6
Delete memory allocated by CopyEnv
...
llvm-svn: 28288
2006-05-14 18:38:13 +00:00
47a6e63696
remove dead var
...
llvm-svn: 28287
2006-05-14 18:34:36 +00:00
3237da073e
remove dead variables
...
llvm-svn: 28286
2006-05-14 18:33:57 +00:00
6b7a00869a
Change token to match asmprinter output
...
llvm-svn: 28285
2006-05-14 18:23:06 +00:00
18d0438148
Backing out last check-in for now. It's causing an infinite loop gccas lencode.
...
llvm-svn: 28284
2006-05-14 06:46:03 +00:00
215280d8b9
Update comment.
...
llvm-svn: 28283
2006-05-14 02:05:19 +00:00
f98ede25bb
This is a proper fix for the compiler warning. A termination condition is
...
not needed, as it can never be reached: an edge must exist.
llvm-svn: 28282
2006-05-14 02:01:22 +00:00
fc124ea453
Fix an infinite loop bug that Vladimir Prus identified.
...
llvm-svn: 28281
2006-05-13 18:11:32 +00:00
c19fffd42d
Add a #include <cassert> for situations where Casting.h is used standalone.
...
Patch contributed by Vladimir Prus.
llvm-svn: 28280
2006-05-13 17:50:38 +00:00
99f2f79e2f
Fixing 2006-05-01-SchedCausingSpills.ll; some clean up
...
llvm-svn: 28279
2006-05-13 08:22:24 +00:00
d1915cfa6f
Revert an un-intended change
...
llvm-svn: 28278
2006-05-13 05:53:47 +00:00
11b002365f
Don't try to reference uninitialized data. Make sure we can find "nm".
...
llvm-svn: 28277
2006-05-13 02:48:45 +00:00
70de606bb9
For PR741:
...
Update documentation to reflect current LLVM reality:
+ LLVMAlpha.o, LLVMIA64.o
- Skeleton, execve, ProfilePaths
Also, regenerate the library dependency information.
llvm-svn: 28276
2006-05-13 02:22:01 +00:00
3987a8532d
Add/Sub/Mul are safe to promote here as well. Incrementing a single-bit
...
bitfield now gives this code:
_plus:
lwz r2, 0(r3)
rlwimi r2, r2, 0, 1, 31
xoris r2, r2, 32768
stw r2, 0(r3)
blr
instead of this:
_plus:
lwz r2, 0(r3)
srwi r4, r2, 31
slwi r4, r4, 31
addis r4, r4, -32768
rlwimi r2, r4, 0, 0, 0
stw r2, 0(r3)
blr
this can obviously still be improved.
llvm-svn: 28275
2006-05-13 02:16:08 +00:00
69a0ce6261
Merge identical code.
...
llvm-svn: 28274
2006-05-13 02:11:14 +00:00
1ebbe6a22e
Implement simple promotion for cast elimination in instcombine. This is
...
currently very limited, but can be extended in the future. For example,
we now compile:
uint %test30(uint %c1) {
%c2 = cast uint %c1 to ubyte
%c3 = xor ubyte %c2, 1
%c4 = cast ubyte %c3 to uint
ret uint %c4
}
to:
_xor:
movzbl 4(%esp), %eax
xorl $1, %eax
ret
instead of:
_xor:
movb $1, %al
xorb 4(%esp), %al
movzbl %al, %eax
ret
More impressively, we now compile:
struct B { unsigned bit : 1; };
void xor(struct B *b) { b->bit = b->bit ^ 1; }
To (X86/PPC):
_xor:
movl 4(%esp), %eax
xorl $-2147483648, (%eax)
ret
_xor:
lwz r2, 0(r3)
xoris r2, r2, 32768
stw r2, 0(r3)
blr
instead of (X86/PPC):
_xor:
movl 4(%esp), %eax
movl (%eax), %ecx
movl %ecx, %edx
shrl $31, %edx
# TRUNCATE movb %dl, %dl
xorb $1, %dl
movzbl %dl, %edx
andl $2147483647, %ecx
shll $31, %edx
orl %ecx, %edx
movl %edx, (%eax)
ret
_xor:
lwz r2, 0(r3)
srwi r4, r2, 31
xori r4, r4, 1
rlwimi r2, r4, 31, 0, 0
stw r2, 0(r3)
blr
This implements InstCombine/cast.ll:test30.
llvm-svn: 28273
2006-05-13 02:06:03 +00:00
4edab0f7a7
New testcase for instcombine
...
llvm-svn: 28272
2006-05-13 02:00:07 +00:00
cd60d38b30
Remove some dead variables.
...
Fix a nasty bug in the memcmp optimizer where we used the wrong variable!
llvm-svn: 28269
2006-05-12 23:35:26 +00:00
94acc47654
Remove dead stuff
...
llvm-svn: 28268
2006-05-12 23:32:01 +00:00
768bc20b74
Fix build breakage :(
...
llvm-svn: 28267
2006-05-12 23:26:11 +00:00
b19ce6c810
More coverity fixes
...
llvm-svn: 28266
2006-05-12 21:14:20 +00:00
22f95b74ba
Dead variable
...
llvm-svn: 28265
2006-05-12 21:12:22 +00:00
ae48a894b1
Remove dead var, fix bad override.
...
llvm-svn: 28264
2006-05-12 21:09:57 +00:00
c220ecfbb9
Don't use old-style casts. This prevents compiler warnings when CommandLine.h
...
is used in projects that have stricter warning control than LLVM. This also
helps us find casts more easily if we ever need to.
llvm-svn: 28263
2006-05-12 19:20:55 +00:00
a726fc6dbf
If the register allocator cannot find a register to spill, try the aliases. If
...
that still fails (because all the register spill weights are inf), just grab
one.
llvm-svn: 28262
2006-05-12 19:07:46 +00:00
db30388d48
Remove dead code
...
llvm-svn: 28261
2006-05-12 19:03:56 +00:00
227d442d01
Fix accidentally committed patch.
...
llvm-svn: 28260
2006-05-12 18:20:39 +00:00
d63ec521c5
Actually override the right method. :)
...
Bug identified by coverity.
llvm-svn: 28259
2006-05-12 18:19:25 +00:00
132322b96e
remove dead variable.
...
llvm-svn: 28258
2006-05-12 18:17:25 +00:00
1971e8a77b
Fix iterator invalidation bug, identified by Coverity.
...
llvm-svn: 28257
2006-05-12 18:13:11 +00:00
1fe2d2c600
Fix a hypothetical memory leak, identified by Coverity. In practice, this
...
object is never deleted though.
llvm-svn: 28256
2006-05-12 18:10:12 +00:00
53cdb2f2b0
Remove dead vars
...
llvm-svn: 28255
2006-05-12 18:06:45 +00:00
da076e41ab
remove dead vars
...
llvm-svn: 28254
2006-05-12 18:04:28 +00:00
fe211deedf
Remove dead variable
...
llvm-svn: 28253
2006-05-12 18:02:04 +00:00
afe72481f6
Comment out dead variables
...
llvm-svn: 28252
2006-05-12 17:57:54 +00:00
69fb378858
When reading the symbol table, make sure to delete the ArchiveMember
...
created by reading the symbol table.
llvm-svn: 28251
2006-05-12 17:56:20 +00:00
936cd3390d
Remove dead var
...
llvm-svn: 28250
2006-05-12 17:50:35 +00:00
ce9ac0cdab
Remove dead variable
...
llvm-svn: 28249
2006-05-12 17:41:45 +00:00
f76c42776d
remove dead variable.
...
llvm-svn: 28248
2006-05-12 17:33:59 +00:00
9cd2ef34e6
Remove dead variable.
...
llvm-svn: 28247
2006-05-12 17:31:21 +00:00
36d256f170
Avoid defining dead result
...
llvm-svn: 28246
2006-05-12 17:29:40 +00:00
917f8fd1d9
Remove dead return value.
...
llvm-svn: 28245
2006-05-12 17:28:36 +00:00
8c02c3f41a
Compile:
...
%tmp152 = setgt uint %tmp144, %tmp149 ; <bool> [#uses=1]
%tmp159 = setlt uint %tmp144, %tmp149 ; <bool> [#uses=1]
%bothcond2 = or bool %tmp152, %tmp159 ; <bool> [#uses=1]
To setne, not setune, which causes an assertion fault.
llvm-svn: 28244
2006-05-12 17:03:46 +00:00
a296339c87
Fix PowerPC/2006-05-12-rlwimi-crash.ll
...
Nate, please verify that if InsertMask is 0, rlwimi shouldn't be used.
This fixes the crash and causes no PPC testsuite regressions.
llvm-svn: 28243
2006-05-12 16:29:37 +00:00
6372a2acde
new testcase for a recent rlwimi crash.
...
llvm-svn: 28242
2006-05-12 16:28:13 +00:00
21c7c23d7e
Noop instruction
...
llvm-svn: 28241
2006-05-12 07:47:00 +00:00
e2c1aedc23
Unused instruction
...
llvm-svn: 28240
2006-05-12 07:42:01 +00:00
5fea9f0a93
Add a method to generate a string representation from a TargetData.
...
This continues the work on PR 761.
llvm-svn: 28239
2006-05-12 07:01:44 +00:00
8c2c1e90c4
Refactor a bunch of includes so that TargetMachine.h doesn't have to include
...
TargetData.h. This should make recompiles a bit faster with my current
TargetData tinkering.
llvm-svn: 28238
2006-05-12 06:33:49 +00:00
d7c77b8c56
Fix some tabbing issues.
...
llvm-svn: 28237
2006-05-12 06:06:55 +00:00
6a6886185b
Backing out fix for PR770. Need to re-apply it after live range splitting is possible
...
llvm-svn: 28236
2006-05-12 06:06:34 +00:00
095c9d9b7f
Duh. That could take a long time.
...
llvm-svn: 28235
2006-05-12 06:05:18 +00:00
8d7774cb1d
Add a new constructor to TargetData that builds a TargetData from its
...
string representation.
This is part of PR 761.
llvm-svn: 28234
2006-05-12 05:49:47 +00:00
66adee93aa
Two simplifications for token factor nodes: simplify tf(x,x) -> x.
...
simplify tf(x,y,y,z) -> tf(x,y,z).
llvm-svn: 28233
2006-05-12 05:01:37 +00:00
1501b9f829
New scheduling test case.
...
llvm-svn: 28232
2006-05-12 01:59:17 +00:00
afed73eebe
Add capability to scheduler to commute nodes for profit.
...
If a two-address code whose first operand has uses below, it should be commuted
when possible.
llvm-svn: 28230
2006-05-12 01:58:24 +00:00
c30a5558f2
Typo! How did we commute nodes before?!
...
llvm-svn: 28229
2006-05-12 01:46:26 +00:00
22acb80971
For extra sanity checking, fill free'd memory with garbage so we know that
...
people aren't reusing machine code buffers at all.
llvm-svn: 28228
2006-05-12 00:03:12 +00:00
3c729b9e5d
Fix some bugs in the freelist manipulation code.
...
Finally, implement ExecutionEngine::freeMachineCodeForFunction.
llvm-svn: 28227
2006-05-11 23:56:57 +00:00
d38c22bdd3
Refactor scheduler code. Move register-reduction list scheduler to a
...
separate file. Added an initial implementation of top-down register pressure
reduction list scheduler.
llvm-svn: 28226
2006-05-11 23:55:42 +00:00
873ef133ce
Significantly revamp allocation of machine code to use free lists, real
...
allocation policies and much more. All this complexity, and we have no
functionality change, woo! :)
llvm-svn: 28225
2006-05-11 23:08:08 +00:00
1443bc52be
Refactor some code, making it simpler.
...
When doing the initial pass of constant folding, if we get a constantexpr,
simplify the constant expr like we would do if the constant is folded in the
normal loop.
This fixes the missed-optimization regression in
Transforms/InstCombine/getelementptr.ll last night.
llvm-svn: 28224
2006-05-11 17:11:52 +00:00
dd7230c9e0
Add MOV16_rm / MOV32_rm and MOV16_mr / MOV32_mr to isLoadFromStackSlot and isStoreToStackSlot
...
llvm-svn: 28223
2006-05-11 07:33:49 +00:00
0da0c50f1e
Also add super- register class info.
...
llvm-svn: 28222
2006-05-11 07:31:44 +00:00
229a6d0026
Also add super- register classes info.
...
llvm-svn: 28221
2006-05-11 07:30:26 +00:00
47926aff96
Set weight of zero length intervals to infinite to prevent them from being
...
spilled.
llvm-svn: 28220
2006-05-11 07:29:24 +00:00
db6aa4896b
Backing out previous check-in.
...
llvm-svn: 28219
2006-05-11 07:28:16 +00:00
68afff2dcd
Fix some problems linking stuff in libTarget.
...
llvm-svn: 28218
2006-05-11 03:10:15 +00:00
6ad040a6bc
If the live interval legnth is essentially zero, i.e. in every live range
...
the use follows def immediately, it doesn't make sense to spill it and
hope it will be easier to allocate for this LI.
llvm-svn: 28217
2006-05-10 22:30:41 +00:00
47a57ac4f9
Update test case
...
llvm-svn: 28216
2006-05-10 19:53:05 +00:00
a36ee4ea34
Two changes:
...
1. Implement InstCombine/deadcode.ll by not adding instructions in unreachable
blocks (due to constants in conditional branches/switches) to the worklist.
This causes them to be deleted before instcombine starts up, leading to
better optimization.
2. In the prepass over instructions, do trivial constprop/dce as we go. This
has the effect of improving the effectiveness of #1 . In addition, it
*significantly* speeds up instcombine on test cases with large amounts of
constant folding code (for example, that produced by code specialization
or partial evaluation). In one example, it speeds up instcombine from
0.0589s to 0.0224s with a release build (a 2.6x speedup).
llvm-svn: 28215
2006-05-10 19:00:36 +00:00
1a0e0c1c9e
New testcase, check that dead code doesn't pessimize instcombine
...
llvm-svn: 28214
2006-05-10 18:56:04 +00:00
b25cb79604
Fix the PowerPC JIT-only failure on UnitTests/Vector/sumarray-dbl, which is
...
really a bad codegen bug that LLC happens to get lucky with. I must chat with
Nate for the proper fix.
llvm-svn: 28213
2006-05-10 06:38:32 +00:00
9665ba053f
Templatify RegReductionPriorityQueue
...
llvm-svn: 28212
2006-05-10 06:16:44 +00:00
728c377e0f
Add alloca/malloc ctors that don't take array sizes.
...
llvm-svn: 28211
2006-05-10 04:38:35 +00:00
bb7ff6690f
Add an assertion for a common error
...
llvm-svn: 28210
2006-05-10 04:32:43 +00:00
32982836b6
Watch out for the following case:
...
1. Use expects a chain output.
2. Node is expanded into multiple target ops.
3. One of the inner node produces a chain, the outer most one doesn't.
llvm-svn: 28209
2006-05-10 02:47:57 +00:00
d2b8067748
Fix a load folding bug. It is exposed by a multi- resulting instructions
...
def : Pat<> pattern.
llvm-svn: 28208
2006-05-10 00:05:46 +00:00
1a225d23ae
Fix PR773
...
llvm-svn: 28207
2006-05-09 18:20:51 +00:00
5d779af587
This method doesn't need to be virtual, thanks to Reid for pointing this out.
...
llvm-svn: 28206
2006-05-09 17:29:17 +00:00
f801792e08
Fix a regression in my patch from last night that broke the llvmgcc4 build on
...
ppc
llvm-svn: 28205
2006-05-09 16:41:59 +00:00
2814134a5d
Indent .data/.text in the .s file
...
llvm-svn: 28204
2006-05-09 16:15:00 +00:00
43ddc376fb
Another instruction scheduling test case
...
llvm-svn: 28203
2006-05-09 07:20:24 +00:00
7d693898ee
Add pseudo dependency to force a def&use operand to be scheduled last (unless
...
the distance between the def and another use is much longer). This is under
option control for now "-sched-lower-defnuse".
llvm-svn: 28201
2006-05-09 07:13:34 +00:00
2c74848af1
Debugging info
...
llvm-svn: 28200
2006-05-09 06:55:15 +00:00
fc532fe1b7
Remove a completed entry.
...
llvm-svn: 28199
2006-05-09 06:54:05 +00:00
c39ab4575e
Test case for PR770
...
llvm-svn: 28198
2006-05-09 06:48:12 +00:00
ae45020720
PR 770 - permit coallescing of registers in subset register classes.
...
llvm-svn: 28197
2006-05-09 06:37:48 +00:00
f2925b3b2c
Added sub- register classes information.
...
llvm-svn: 28196
2006-05-09 06:35:30 +00:00
5e7ba0b049
Add sub-register class information.
...
llvm-svn: 28195
2006-05-09 06:34:26 +00:00
4ebc6a2311
Implement MASM sections correctly, without a "has masm sections flag" and a bunch of special case code.
...
llvm-svn: 28194
2006-05-09 05:33:48 +00:00
af35b1476e
Implement MASM sections correctly, without a "has masm sections flag" and a
...
bunch of special case code.
llvm-svn: 28193
2006-05-09 05:33:28 +00:00
8c2bfc0659
Oh yeah, there are two of these now, unify both.
...
llvm-svn: 28192
2006-05-09 05:24:50 +00:00
6341df8069
Setting SwitchToSectionDirective properly in the MASM backend permits a bunch
...
of code to be unified.
llvm-svn: 28191
2006-05-09 05:23:12 +00:00
0b7acaf027
MASM doesn't have one of these.
...
llvm-svn: 28190
2006-05-09 05:21:47 +00:00
d36cc2b610
Don't prefix section directives with a tab. Doing so causes blank lines to
...
be emitted to the .s file.
llvm-svn: 28189
2006-05-09 05:19:59 +00:00
e64f764d25
Make the masm codepath work like the normal code path.
...
llvm-svn: 28188
2006-05-09 05:15:58 +00:00
e0006c6794
Preserve prior behavior
...
llvm-svn: 28187
2006-05-09 05:15:24 +00:00
c0f0dfa56f
The MASM asmprinter has been fixed, these hacks are no longer needed.
...
llvm-svn: 28186
2006-05-09 05:13:34 +00:00
d0201946ad
Fix the MASM asmprinter's lies. It does not want to emit code to .text/.data
...
it wants it emitted to _text/_data.
llvm-svn: 28185
2006-05-09 05:12:53 +00:00
8488ba2e41
Split SwitchSection into SwitchTo{Text|Data}Section methods.
...
llvm-svn: 28184
2006-05-09 04:59:56 +00:00
a6212b0fe6
Split SwitchSection into the SwitchTo{Text|Data}Section functions, to better
...
support assemblers that distinguish the two.
llvm-svn: 28183
2006-05-09 04:59:30 +00:00
8587f8885d
Some notes and thoughts to myself
...
llvm-svn: 28182
2006-05-09 04:58:46 +00:00
4fe87d67c4
Patch to make some xforms preserve each other. Patch contributed by
...
Domagoj Babic!
llvm-svn: 28181
2006-05-09 04:13:41 +00:00
357f3e8231
Use the -dumpversion option to llvm-gcc which gives us just the version #
...
and is unlikely to change in future releases. This also simplifies the
parsing of the full and major llvm-gcc version numbers in the script.
llvm-svn: 28180
2006-05-09 00:31:01 +00:00
6d8dd189f6
Move some methods out of line so that MutexGuard.h isn't needed in a public header.
...
llvm-svn: 28179
2006-05-08 22:00:52 +00:00
12b056007e
Move methods out of line so that MutexGuard.h isn't required in the header.
...
llvm-svn: 28178
2006-05-08 22:00:26 +00:00
aa193d80a9
Another bad case I noticed
...
llvm-svn: 28177
2006-05-08 21:39:45 +00:00
5bcea612f4
add a note
...
llvm-svn: 28176
2006-05-08 21:24:21 +00:00
446e1ef26a
Make the case I just checked in stronger. Now we compile this:
...
short test2(short X, short x) {
int Y = (short)(X+x);
return Y >> 1;
}
to:
_test2:
add r2, r3, r4
extsh r2, r2
srawi r3, r2, 1
blr
instead of:
_test2:
add r2, r3, r4
extsh r2, r2
srwi r2, r2, 1
extsh r3, r2
blr
llvm-svn: 28175
2006-05-08 21:18:59 +00:00
29062da0ac
Implement and_sext.ll:test3, generating:
...
_test4:
srawi r3, r3, 16
blr
instead of:
_test4:
srwi r2, r3, 16
extsh r3, r2
blr
for:
short test4(unsigned X) {
return (X >> 16);
}
llvm-svn: 28174
2006-05-08 20:59:41 +00:00
536c83f25d
new testcase
...
llvm-svn: 28173
2006-05-08 20:58:58 +00:00
ce6646c366
Yet more readme updating
...
llvm-svn: 28172
2006-05-08 20:54:02 +00:00
2935d8190c
Compile this:
...
short test4(unsigned X) {
return (X >> 16);
}
to:
_test4:
movl 4(%esp), %eax
sarl $16, %eax
ret
instead of:
_test4:
movl $-65536, %eax
andl 4(%esp), %eax
sarl $16, %eax
ret
llvm-svn: 28171
2006-05-08 20:51:54 +00:00
68a45419cc
New note about something bad happening in target independent optimizers
...
llvm-svn: 28170
2006-05-08 20:08:28 +00:00
0eb8f2e496
Proving once again that I am not as smart as the compiler
...
llvm-svn: 28169
2006-05-08 19:09:24 +00:00
9b6d4c2968
Fold more shifts into inserts, and update the README
...
llvm-svn: 28168
2006-05-08 17:38:32 +00:00
78da6792e7
Fold shifts with undef operands.
...
llvm-svn: 28167
2006-05-08 17:29:49 +00:00
10c653744e
When tracking demanded bits, if any bits from the sext of an SRA are demanded,
...
then so is the input sign bit. This fixes mediabench/g721 on X86.
llvm-svn: 28166
2006-05-08 17:22:53 +00:00
d7a19102d1
Make emission of jump tables a bit less conservative; they are now required
...
to be only 31.25% dense, rather than 75% dense.
llvm-svn: 28165
2006-05-08 16:51:36 +00:00
9733bde74c
Fixing truncate. Previously we were emitting truncate from r16 to r8 as
...
movw. That is we promote the destination operand to r16. So
%CH = TRUNC_R16_R8 %BP
is emitted as
movw %bp, %cx.
This is incorrect. If %cl is live, it would be clobbered.
Ideally we want to do the opposite, that is emitted it as
movb ??, %ch
But this is not possible since %bp does not have a r8 sub-register.
We are now defining a new register class R16_ which is a subclass of R16
containing only those 16-bit registers that have r8 sub-registers (i.e.
AX - DX). We isel the truncate to two instructions, a MOV16to16_ to copy the
value to the R16_ class, followed by a TRUNC_R16_R8.
Due to bug 770, the register colaescer is not going to coalesce between R16 and
R16_. That will be fixed later so we can eliminate the MOV16to16_. Right now, it
can only be eliminated if we are lucky that source and destination registers are
the same.
llvm-svn: 28164
2006-05-08 08:01:26 +00:00
ea10657c08
Move the definition of value_use_iterator::getOperandNo to User.h where the
...
definition of the User class is available, this fixes the build with some
compiler versions.
llvm-svn: 28163
2006-05-08 05:59:36 +00:00
dc996b3f6c
Update some stuff now that the new rlwimi code has gone in
...
llvm-svn: 28162
2006-05-08 02:52:38 +00:00
e5ce5bb6da
Fix PR772
...
llvm-svn: 28161
2006-05-08 01:35:01 +00:00
a35ee93a59
Remove unncessary include
...
llvm-svn: 28160
2006-05-08 01:33:11 +00:00
21c85bc790
This test passes now, remove xfail marker
...
Change test to be a positive test instead of a negative test
llvm-svn: 28159
2006-05-07 18:16:31 +00:00
6732dcd5b3
Typo's
...
llvm-svn: 28158
2006-05-07 10:10:20 +00:00
04196acdcb
Unlike Unix, Windows won't let a file be implicitly replaced via renaming without explicit permission.
...
llvm-svn: 28157
2006-05-07 02:51:51 +00:00
1333cead5b
New rlwimi implementation, which is superior to the old one. There are
...
still a couple missed optimizations, but we now generate all the possible
rlwimis for multiple inserts into the same bitfield. More regression tests
to come.
llvm-svn: 28156
2006-05-07 00:23:38 +00:00
cd4a643728
Use ComputeMaskedBits to determine # sign bits as a fallback. This allows us
...
to handle all kinds of stuff, including silly things like:
sextinreg(setcc,i16) -> setcc.
llvm-svn: 28155
2006-05-06 23:48:13 +00:00
4f3de3e33c
Add some more sign propagation cases
...
llvm-svn: 28154
2006-05-06 23:40:29 +00:00
9978476c14
Apply bug fix supplied by Greg Pettyjohn for a bug he found: '<invalid>' is not a legal path on Windows.
...
llvm-svn: 28153
2006-05-06 23:25:53 +00:00
7e7bcf3a54
Simplify some code, add a couple minor missed folds
...
llvm-svn: 28152
2006-05-06 23:06:26 +00:00
751817c54f
constant fold sign_extend_inreg
...
llvm-svn: 28151
2006-05-06 23:05:41 +00:00
2a4d7b845b
remove cases handled elsewhere
...
llvm-svn: 28150
2006-05-06 22:43:44 +00:00
f86075731d
Add some more simple sign bit propagation cases.
...
llvm-svn: 28149
2006-05-06 22:39:59 +00:00
ce9b9fe6eb
Fix some loose ends in MASM support.
...
llvm-svn: 28148
2006-05-06 21:27:14 +00:00
0b8c57ec2b
new testcase we handle right now.
...
llvm-svn: 28147
2006-05-06 18:15:50 +00:00
1ecb2a2dac
Use the new TargetLowering::ComputeNumSignBits method to eliminate
...
sign_extend_inreg operations. Though ComputeNumSignBits is still rudimentary,
this is enough to compile this:
short test(short X, short x) {
int Y = X+x;
return (Y >> 1);
}
short test2(short X, short x) {
int Y = (short)(X+x);
return Y >> 1;
}
into:
_test:
add r2, r3, r4
srawi r3, r2, 1
blr
_test2:
add r2, r3, r4
extsh r2, r2
srawi r3, r2, 1
blr
instead of:
_test:
add r2, r3, r4
srawi r2, r2, 1
extsh r3, r2
blr
_test2:
add r2, r3, r4
extsh r2, r2
srawi r2, r2, 1
extsh r3, r2
blr
llvm-svn: 28146
2006-05-06 09:30:03 +00:00
7206d74f0c
Add some really really simple code for computing sign-bit propagation.
...
This will certainly be enhanced in the future.
llvm-svn: 28145
2006-05-06 09:27:13 +00:00
1474f16166
Add some new methods for computing sign bit information.
...
llvm-svn: 28144
2006-05-06 09:26:22 +00:00
21cd99024a
When inserting casts, be careful of where we put them. We cannot insert
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a cast immediately before a PHI node.
This fixes Regression/CodeGen/Generic/2006-05-06-GEP-Cast-Sink-Crash.ll
llvm-svn: 28143
2006-05-06 09:10:37 +00:00
cbeb178e14
new testcase
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llvm-svn: 28142
2006-05-06 09:09:47 +00:00
1d441adfbf
Move some code around.
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Make the "fold (and (cast A), (cast B)) -> (cast (and A, B))" transformation
only apply when both casts really will cause code to be generated. If one or
both doesn't, then this xform doesn't remove a cast.
This fixes Transforms/InstCombine/2006-05-06-Infloop.ll
llvm-svn: 28141
2006-05-06 09:00:16 +00:00
44f121abc1
new testcase from ghostscript that inf looped instcombine
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llvm-svn: 28140
2006-05-06 08:58:06 +00:00
6d4a2dc4ad
Teach the X86 backend about non-i32 inline asm register classes.
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llvm-svn: 28139
2006-05-06 00:29:37 +00:00
86a1467fc0
Fold (trunc (srl x, c)) -> (srl (trunc x), c)
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llvm-svn: 28138
2006-05-06 00:11:52 +00:00
907e392dba
Fold trunc(any_ext). This gives stuff like:
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27,28c27
< movzwl %di, %edi
< movl %edi, %ebx
---
> movw %di, %bx
llvm-svn: 28137
2006-05-05 22:56:26 +00:00
57f8c5a387
Shrink shifts when possible.
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llvm-svn: 28136
2006-05-05 22:53:17 +00:00
0f64932a5c
Implement ComputeMaskedBits/SimplifyDemandedBits for ISD::TRUNCATE
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llvm-svn: 28135
2006-05-05 22:32:12 +00:00
8b9e11c110
Print a grouping around inline asm blocks so that we can tell when we are
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using them.
llvm-svn: 28134
2006-05-05 21:50:04 +00:00
c22d4bede5
Print *some* grouping around inline asm blocks so we know where they are.
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llvm-svn: 28133
2006-05-05 21:48:50 +00:00
a633c31319
Indent multiline asm strings more nicely
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llvm-svn: 28132
2006-05-05 21:47:05 +00:00
44a73e9fa5
Teach the code generator to use cvtss2sd as extload f32 -> f64
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llvm-svn: 28131
2006-05-05 21:35:18 +00:00
3d26577396
Fold (fpext (load x)) -> (extload x)
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llvm-svn: 28130
2006-05-05 21:34:35 +00:00
3e3f2c63c3
More aggressively sink GEP offsets into loops. For example, before we
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generated:
movl 8(%esp), %eax
movl %eax, %edx
addl $4316, %edx
cmpb $1, %cl
ja LBB1_2 #cond_false
LBB1_1: #cond_true
movl L_QuantizationTables720$non_lazy_ptr, %ecx
movl %ecx, (%edx)
movl L_QNOtoQuantTableShift720$non_lazy_ptr, %edx
movl %edx, 4460(%eax)
ret
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Now we generate:
movl 8(%esp), %eax
cmpb $1, %cl
ja LBB1_2 #cond_false
LBB1_1: #cond_true
movl L_QuantizationTables720$non_lazy_ptr, %ecx
movl %ecx, 4316(%eax)
movl L_QNOtoQuantTableShift720$non_lazy_ptr, %ecx
movl %ecx, 4460(%eax)
ret
... which uses one fewer register.
llvm-svn: 28129
2006-05-05 21:17:49 +00:00
e745c7de0e
Fix an infinite loop compiling oggenc last night.
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llvm-svn: 28128
2006-05-05 20:51:30 +00:00
52c22512b9
Need extload patterns after Chris' DAG combiner changes
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llvm-svn: 28127
2006-05-05 08:23:07 +00:00
3af1053488
Implement InstCombine/cast.ll:test29
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llvm-svn: 28126
2006-05-05 06:39:07 +00:00
c9043ef728
New testcase
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llvm-svn: 28125
2006-05-05 06:38:40 +00:00
25a5283a86
Fold some common code.
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llvm-svn: 28124
2006-05-05 06:32:04 +00:00
002ee91457
Implement:
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// fold (and (sext x), (sext y)) -> (sext (and x, y))
// fold (or (sext x), (sext y)) -> (sext (or x, y))
// fold (xor (sext x), (sext y)) -> (sext (xor x, y))
// fold (and (aext x), (aext y)) -> (aext (and x, y))
// fold (or (aext x), (aext y)) -> (aext (or x, y))
// fold (xor (aext x), (aext y)) -> (aext (xor x, y))
llvm-svn: 28123
2006-05-05 06:31:05 +00:00
5ac4293606
Pull and through and/or/xor. This compiles some bitfield code to:
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mov EAX, DWORD PTR [ESP + 4]
mov ECX, DWORD PTR [EAX]
mov EDX, ECX
add EDX, EDX
or EDX, ECX
and EDX, -2147483648
and ECX, 2147483647
or EDX, ECX
mov DWORD PTR [EAX], EDX
ret
instead of:
sub ESP, 4
mov DWORD PTR [ESP], ESI
mov EAX, DWORD PTR [ESP + 8]
mov ECX, DWORD PTR [EAX]
mov EDX, ECX
add EDX, EDX
mov ESI, ECX
and ESI, -2147483648
and EDX, -2147483648
or EDX, ESI
and ECX, 2147483647
or EDX, ECX
mov DWORD PTR [EAX], EDX
mov ESI, DWORD PTR [ESP]
add ESP, 4
ret
llvm-svn: 28122
2006-05-05 06:10:43 +00:00
812646aa0c
Implement a variety of simplifications for ANY_EXTEND.
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llvm-svn: 28121
2006-05-05 05:58:59 +00:00
8d6fc20181
Factor some code, add these transformations:
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// fold (and (trunc x), (trunc y)) -> (trunc (and x, y))
// fold (or (trunc x), (trunc y)) -> (trunc (or x, y))
// fold (xor (trunc x), (trunc y)) -> (trunc (xor x, y))
llvm-svn: 28120
2006-05-05 05:51:50 +00:00
ddb6cc1d8e
Better implementation of truncate. ISel matches it to a pseudo instruction
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that gets emitted as movl (for r32 to i16, i8) or a movw (for r16 to i8). And
if the destination gets allocated a subregister of the source operand, then
the instruction will not be emitted at all.
llvm-svn: 28119
2006-05-05 05:40:20 +00:00
304bbf3b1d
New note, Nate, please check to see if I'm full of it :)
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llvm-svn: 28118
2006-05-05 05:36:15 +00:00
78a7f0e05e
Fix VC++ compilation error.
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llvm-svn: 28117
2006-05-05 01:47:05 +00:00
dec86e74ff
Somehow, I missed this part of the checkin a couple days ago
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llvm-svn: 28116
2006-05-05 01:13:11 +00:00
7a3ecf7993
Sink noop copies into the basic block that uses them. This reduces the number
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of cross-block live ranges, and allows the bb-at-a-time selector to always
coallesce these away, at isel time.
This reduces the load on the coallescer and register allocator. For example
on a codec on X86, we went from:
1643 asm-printer - Number of machine instrs printed
419 liveintervals - Number of loads/stores folded into instructions
1144 liveintervals - Number of identity moves eliminated after coalescing
1022 liveintervals - Number of interval joins performed
282 liveintervals - Number of intervals after coalescing
1304 liveintervals - Number of original intervals
86 regalloc - Number of times we had to backtrack
1.90232 regalloc - Ratio of intervals processed over total intervals
40 spiller - Number of values reused
182 spiller - Number of loads added
121 spiller - Number of stores added
132 spiller - Number of register spills
6 twoaddressinstruction - Number of instructions commuted to coalesce
360 twoaddressinstruction - Number of two-address instructions
to:
1636 asm-printer - Number of machine instrs printed
403 liveintervals - Number of loads/stores folded into instructions
1155 liveintervals - Number of identity moves eliminated after coalescing
1033 liveintervals - Number of interval joins performed
279 liveintervals - Number of intervals after coalescing
1312 liveintervals - Number of original intervals
76 regalloc - Number of times we had to backtrack
1.88998 regalloc - Ratio of intervals processed over total intervals
1 spiller - Number of copies elided
41 spiller - Number of values reused
191 spiller - Number of loads added
114 spiller - Number of stores added
128 spiller - Number of register spills
4 twoaddressinstruction - Number of instructions commuted to coalesce
356 twoaddressinstruction - Number of two-address instructions
On this testcase, this change provides a modest reduction in spill code,
regalloc iterations, and total instructions emitted. It increases the number
of register coallesces.
llvm-svn: 28115
2006-05-05 01:04:50 +00:00
a0c3ec513d
Add a helper method.
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llvm-svn: 28114
2006-05-05 00:51:42 +00:00
34d26c38b2
wrap long line
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llvm-svn: 28113
2006-05-04 23:35:31 +00:00
b6277c510c
Adjust to use proper TargetData copy ctor
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llvm-svn: 28112
2006-05-04 21:18:40 +00:00
660d80effe
Fix this to be a proper copy ctor
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llvm-svn: 28111
2006-05-04 21:17:35 +00:00
abdf4d569c
Final pass of minor cleanups for MachineInstr
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llvm-svn: 28110
2006-05-04 19:36:09 +00:00
9add880566
Initial support for register pressure aware scheduling. The register reduction
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scheduler can go into a "vertical mode" (i.e. traversing up the two-address
chain, etc.) when the register pressure is low.
This does seem to reduce the number of spills in the cases I've looked at. But
with x86, it's no guarantee the performance of the code improves.
It can be turned on with -sched-vertically option.
llvm-svn: 28108
2006-05-04 19:16:39 +00:00
53af9da363
Remove redundancy and a level of indirection when creating machine operands
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llvm-svn: 28107
2006-05-04 19:14:44 +00:00
6b18d20c73
Move register numbers out of "extra" into "contents". Other minor cleanup.
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llvm-svn: 28106
2006-05-04 18:25:20 +00:00
469647bf38
Remove and simplify some more machineinstr/machineoperand stuff.
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llvm-svn: 28105
2006-05-04 18:16:01 +00:00
10b71c0d08
Rename MO_VirtualRegister -> MO_Register. Clean up immediate handling.
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llvm-svn: 28104
2006-05-04 18:05:43 +00:00
700cd27e83
remove hasAllocatedReg
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llvm-svn: 28103
2006-05-04 17:56:20 +00:00
10d6341618
Move some methods out of MachineInstr into MachineOperand
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llvm-svn: 28102
2006-05-04 17:52:23 +00:00
fb29692055
Fix Transforms/InstCombine/2006-05-04-DemandedBitCrash.ll
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llvm-svn: 28101
2006-05-04 17:33:35 +00:00
618ff2dc4e
new testcase that crashes the instcombine pass
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llvm-svn: 28100
2006-05-04 17:33:24 +00:00
fef7a2d0f5
There shalt be only one "immediate" operand type!
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llvm-svn: 28099
2006-05-04 17:21:20 +00:00
15c52bda1d
Change "value" in MachineOperand to be a GlobalValue, as that is the only
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thing that can be in it. Remove a dead method.
llvm-svn: 28098
2006-05-04 17:02:51 +00:00
13d5f3eb05
Revert Nate's CR patch from last night, which caused many regressions (e.g. fhourstones).
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Loading and storing off R0 isn't what we wanted. Also, taking some CR's out of
CRRC seems to cause failures as well. Further investigation is required.
llvm-svn: 28097
2006-05-04 16:56:45 +00:00
06041abeb6
Make external globals public; other minor cleanup.
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llvm-svn: 28096
2006-05-04 16:20:22 +00:00
Chris Lattner