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594 Commits

Author SHA1 Message Date
Nate Begeman
0e77845b7e Addition of the PPC32 Pattern ISel. While it is far from complete, it will 
be brought up to parity with the current simple ISel in the coming days.
Currently, -pattern-isel is required to trigger it.

llvm-svn: 20805
 2005-03-24 04:41:43 +00:00
Misha Brukman
04d6d0666d We may be adding functions to the Module during initialization, so 
conservatively, it's modified

llvm-svn: 20735
 2005-03-21 19:22:14 +00:00
Chris Lattner
4b688a1c70 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597
 2005-03-15 04:54:21 +00:00
Chris Lattner
496d623600 Fix a crash handling 'undef bool', fixing an llc crash on 186.crafty 
llvm-svn: 20523
 2005-03-08 22:53:09 +00:00
Chris Lattner
b205d87afe cleanup the cfg after lsr 
llvm-svn: 20410
 2005-03-02 21:56:00 +00:00
Chris Lattner
798b18474c Add a temporary option for llc-beta: -enable-lsr-for-ppc, which turns on 
Loop Strength Reduction.

llvm-svn: 20399
 2005-03-02 06:19:22 +00:00
Chris Lattner
5174b9cb60 Fix a problem where the PPC backend lost track of the fact that it had 
to save and restore the LR register on entry and exit of a leaf function
that needed to access globals or the constant pool.  This should hopefully
fix oscar from sending the PPC tester spinning out of control.

llvm-svn: 20197
 2005-02-15 20:26:49 +00:00
Chris Lattner
c032990335 Fix Regression/CodeGen/PowerPC/2005-01-14-UndefLong.ll 
llvm-svn: 19557
 2005-01-14 20:22:02 +00:00
Chris Lattner
b0b49268c4 Fix: Regression/CodeGen/PowerPC/2005-01-14-SetSelectCrash.ll 
llvm-svn: 19555
 2005-01-14 19:31:00 +00:00
Chris Lattner
93fc4bd9cb This hunk: 
-  unsigned TrueValue = getReg(TrueVal, BB, BB->begin());
+  unsigned TrueValue = getReg(TrueVal);

Fixes the PPC regressions from last night.

The other hunk is just a clarity improvement.

llvm-svn: 19263
 2005-01-02 23:07:31 +00:00
Chris Lattner
ad63a0d6a4 Fix a FIXME: Select instructions on longs were miscompiled. 
While we're at it, improve codegen of select instructions.  For this
testcase:

int %test(bool %C, int %A, int %B) {
  %D = select bool %C, int %A, int %B
  ret int %D
}

We used to generate this code:

_test:
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        b .LBB_test_3   ;
.LBB_test_2:    ;
        or r5, r4, r4
.LBB_test_3:    ;
        or r3, r5, r5
        blr

Now we emit:

_test:
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        or r4, r5, r5
.LBB_test_2:    ;
        or r3, r4, r4
        blr

-Chris

llvm-svn: 19214
 2005-01-01 16:10:12 +00:00
Chris Lattner
cea3ae9792 Specify all of the targets built. 
llvm-svn: 18985
 2004-12-16 17:26:44 +00:00
Chris Lattner
a0561d43b2 Factor out common .td file chunks. 
llvm-svn: 18982
 2004-12-16 16:31:57 +00:00
Chris Lattner
9f0237ca85 Fix Regression/CodeGen/PowerPC/2004-12-12-ZeroSizeCommon.ll, and all programs 
when compiled with debug information.

llvm-svn: 18835
 2004-12-12 20:36:19 +00:00
Chris Lattner
dc33000e67 CSE calls to getTypeSize. 
llvm-svn: 18833
 2004-12-12 20:31:00 +00:00
Chris Lattner
6131b06f73 Use the target triple to pick this target. 
llvm-svn: 18830
 2004-12-12 17:40:28 +00:00
Chris Lattner
2231d21dad Fix several bugs in 'op x, imm' handling. Foremost is that we now emit 
addi r3, r3, -1
instead of
   addi r3, r3, 1

for 'sub int X, 1'.

Secondarily, this fixes several cases where we could crash given an unsigned
constant.  And fixes a couple of minor missed optimization cases, such as
xor X, ~0U -> not X

llvm-svn: 18379
 2004-11-30 07:30:20 +00:00
Chris Lattner
1e093bfb2b Fix CodeGen/PowerPC/2004-11-30-shr-var-crash.ll 
llvm-svn: 18376
 2004-11-30 06:40:04 +00:00
Chris Lattner
629965fbe0 Fix test/Regression/CodeGen/PowerPC/2004-11-29-ShrCrash.ll 
llvm-svn: 18374
 2004-11-30 06:36:11 +00:00
Chris Lattner
23a2a6e5d3 Fix test/Regression/CodeGen/PowerPC/2004-11-30-shift-crash.ll 
llvm-svn: 18371
 2004-11-30 06:29:10 +00:00
Chris Lattner
1de5cd0fd0 The LLVM bool type shall have 1 byte alignment on PPC. 
llvm-svn: 18311
 2004-11-28 21:16:45 +00:00
Nate Begeman
6048139b1f Remove the ISel->AsmPrinter link via the TargetMachine that was put in 
place to help bring up the PowerPC back end on Darwin.  This code is no
longer serves any purpose now that the AsmPrinter does the right thing
all the time printing GlobalValues.  --Cruft.

llvm-svn: 18267
 2004-11-27 04:45:11 +00:00
Chris Lattner
47987cf373 There is no reason to store <x,x>, just store <x>. 
llvm-svn: 18263
 2004-11-26 20:25:17 +00:00
Nate Begeman
6405f5e9b3 Enable optimization suggested by Chris Lattner to not emit reloc stubs for 
static global variables whose addresses are taken.  This allows us to
convert the following code for taking the address of a static function foo

        addis r2, r30, ha16(Ll1__2E_foo_2$non_lazy_ptr-"L00001$pb")
        lwz r3, lo16(Ll1__2E_foo_2$non_lazy_ptr-"L00001$pb")(r2)

which also includes linker stub code emitted at the end of the .s file not
shown here, and replace it with this:

        addis r2, r30, ha16(l1__2E_foo_2-"L00001$pb")
        la r3, lo16(l1__2E_foo_2-"L00001$pb")(r2)

which in addition to not needing linker help, also has no load instruction.
For those not up on PowerPC mnemonics, la is shorthand for add immediate.

llvm-svn: 18239
 2004-11-25 07:09:01 +00:00
Chris Lattner
98ddaa680d Fix the build on non ppc machines 
llvm-svn: 18235
 2004-11-25 06:14:45 +00:00
Chris Lattner
026387ccbc The JIT works enough 
llvm-svn: 18228
 2004-11-25 04:14:54 +00:00
Chris Lattner
671d625e17 Fix encoding of fsel, fixing olden/power, McCat/bisort and several others. 
All of Olden passes now! :)

llvm-svn: 18227
 2004-11-25 04:11:07 +00:00
Chris Lattner
1f6882a401 Fix encoding of fneg instruction 
llvm-svn: 18226
 2004-11-25 03:53:44 +00:00
Chris Lattner
1a5a39e9ec Fix encoding of swari, fixing several programs, including Olden/mst 
llvm-svn: 18225
 2004-11-25 03:40:20 +00:00
Chris Lattner
01269e6ad3 There is not a 1-1 mappign between llvm blocks and PPC blocks, do not use 
LLVM blocks as the keys for the branch rewriter.  This fixes treeadd and
many other programs with the JIT.

llvm-svn: 18223
 2004-11-25 00:33:57 +00:00
Chris Lattner
ebbfaa3db8 * Rename existing relocations to be more specific 
* Add relocations for refernces to non-lazy darwin stubs and implement
  them correctly.

With this change, we can correctly references external globals, and now
all but two UnitTests and all but 1 Regression/C tests pass.

More importantly, bugpoint-jit will start giving us useful testcases,
instead of always telling us that references to external globals don't
work :)

llvm-svn: 18222
 2004-11-24 22:30:08 +00:00
Nate Begeman
e9b752c4e3 Add the same optimization that we do loading from fixed alloca slots to 
storing to fixed alloca slots.

llvm-svn: 18221
 2004-11-24 21:53:14 +00:00
Chris Lattner
4b48c12388 Write CompilationCallback as an explicit assembly stub to avoid getting GCC's 
prolog.

llvm-svn: 18220
 2004-11-24 21:01:46 +00:00
Chris Lattner
961fae4d82 When rewriting the original call instruction, make sure to rewrite it to 
call the right address.

llvm-svn: 18213
 2004-11-24 18:00:02 +00:00
Chris Lattner
8cd0215f14 Force the intregs ptr into R2 and the FPregs ptr into R3. This fixes a really 
obscure problem where we were doing:

lmw     r3,0(r9)

which is undefined on PPC.  Now we do:

lmw     r3,0(r2)

by force, not relying on the GCC register allocator for luck :)

llvm-svn: 18212
 2004-11-24 17:42:55 +00:00
Chris Lattner
de6bb17359 Fix a few more tests by encoding the extsb and other XForm11 instructions 
correctly.

llvm-svn: 18200
 2004-11-24 03:52:02 +00:00
Chris Lattner
338b1b4634 Fix the encoding of ORi and other DForm4 instructions. This brings us to 
36/42 SingleSource/UnitTests passing!

llvm-svn: 18199
 2004-11-24 02:15:41 +00:00
Chris Lattner
2c1b140d62 Loads are relocatable too 
llvm-svn: 18198
 2004-11-24 02:03:44 +00:00
Chris Lattner
ef7794a7c6 Calls do not need a MovPCtoLR instruction 
llvm-svn: 18197
 2004-11-24 02:00:06 +00:00
Chris Lattner
9e59b1f3b5 Get constant pools working. This fixes even more programs, allowing us to 
pass 24/42 in UnitTests (up from 20).

llvm-svn: 18196
 2004-11-24 01:56:12 +00:00
Chris Lattner
a4fd491b8d Rewrite branches more closely to correct. This makes more stuff pass, and 
stops the infinite loops!

llvm-svn: 18194
 2004-11-24 01:35:12 +00:00
Chris Lattner
a8184a2882 Branch instructions explicitly represent CRx in them. bEcause of this, encode 
them explicitly as well.

llvm-svn: 18193
 2004-11-24 01:15:19 +00:00
Nate Begeman
f8b9f49dc8 Fix encoding of bctrl, and remove some unused instructions 
llvm-svn: 18192
 2004-11-24 00:16:37 +00:00
Chris Lattner
f50b42adc1 Fix encoding of blr and bctr 
llvm-svn: 18178
 2004-11-23 22:06:24 +00:00
Nate Begeman
9b9c78b3e2 Use the correct register class as a constaint to gcc's inline assembly, so 
that we don't end up trying to use r0 as a base register.

llvm-svn: 18176
 2004-11-23 21:37:22 +00:00
Nate Begeman
7ae4c39fc6 Save/Restore arg regs and nonvolatile regs the compiler might use during 
CompilationCallback

llvm-svn: 18175
 2004-11-23 21:34:18 +00:00
Chris Lattner
08eb9d0d18 Fix the encoding of OR, AND and many other instructions 
llvm-svn: 18174
 2004-11-23 21:17:35 +00:00
Chris Lattner
04a25df638 Remove argtype and argcount magic, which was used by the old asmprinter. 
llvm-svn: 18170
 2004-11-23 20:41:34 +00:00
Chris Lattner
9a57aafc94 Get rid of flags that are dead 
llvm-svn: 18169
 2004-11-23 20:37:41 +00:00
Chris Lattner
88fcda18b8 Fix encoding of rlwinm? 
llvm-svn: 18165
 2004-11-23 19:23:32 +00:00
Chris Lattner
512b1d6c2a Fix encodings 
llvm-svn: 18164
 2004-11-23 19:23:18 +00:00
Chris Lattner
cb15c858c2 Enumerate CR registers 
llvm-svn: 18162
 2004-11-23 18:59:59 +00:00
Chris Lattner
4cad3e8fbc Initial implementation of exiting CompilationCallback 
This should save all argument registers on entry and restore on exit, despite
that, simple things seem to work!!!

llvm-svn: 18161
 2004-11-23 18:49:46 +00:00
Chris Lattner
141a71cf32 This method is dead 
llvm-svn: 18160
 2004-11-23 18:47:55 +00:00
Chris Lattner
9554912215 Remove this method. 
llvm-svn: 18159
 2004-11-23 18:47:42 +00:00
Chris Lattner
e8e62c5431 Squelch a bogus warning. 
llvm-svn: 18156
 2004-11-23 15:56:38 +00:00
Nate Begeman
f096183b46 Don't return value from void function. This is only temporary anyway while 
the JIT is made to work!

llvm-svn: 18155
 2004-11-23 10:04:49 +00:00
Chris Lattner
b8eb5dabd7 Fix a minor bug 
llvm-svn: 18153
 2004-11-23 06:56:31 +00:00
Chris Lattner
30c5ade43e Be really paranoid about not breaking stuff yet 
llvm-svn: 18152
 2004-11-23 06:56:18 +00:00
Chris Lattner
8bb3fbffa3 Implement the first hunk of CompilationCallback. The pieces missing are the 
ones noted, which require funny PPC specific inline assembly.

If some angel felt the desire to help me, I think this is that last bit missing
for JIT support (however, generic code emitter might night work right with
the constant pool yet).

llvm-svn: 18151
 2004-11-23 06:55:05 +00:00
Chris Lattner
ec9138be44 Implement the stub needed to get into compilation callback. 
llvm-svn: 18147
 2004-11-23 06:27:02 +00:00
Chris Lattner
5ac6f7a36d Simplify code a bit 
llvm-svn: 18146
 2004-11-23 06:05:44 +00:00
Chris Lattner
37a72a9ef2 Initial implementation of the JIT interfaces. Relocation is done and stubs 
for external functions work.  CompilationCallback has not been written, and
stubs for internal functions are not generated yet.  This means you can call
printf and exit, and use global variables, but cannot call functions local to
a module yet.

llvm-svn: 18145
 2004-11-23 06:02:06 +00:00
Chris Lattner
2f47d181d8 Emit relocations for the global variable using instructions. This gets us 
LA, LOADHiAddr, CALLpcrel, and MovePCtoLR working, though the constant pool
probably is not right.

llvm-svn: 18144
 2004-11-23 05:59:53 +00:00
Chris Lattner
17d87ca91f Implement all of the methods 
llvm-svn: 18142
 2004-11-23 05:57:57 +00:00
Chris Lattner
068ade1373 Initial checkin of the 32-bit PPC relocation types 
llvm-svn: 18141
 2004-11-23 05:57:38 +00:00
Chris Lattner
e74f5f8a4e Move JITInfo from PPCTM to PPC32TM 
llvm-svn: 18140
 2004-11-23 05:56:40 +00:00
Chris Lattner
8e3800acc9 Do not provide the non-specialized PowerPCJITInfo object, it is pretty useless. 
Instead, let derived classes provide specialized ones.

llvm-svn: 18139
 2004-11-23 05:55:38 +00:00
Chris Lattner
1b163867c6 LA is really addi. Be consistent with operand ordering to avoid confusing the code emitter 
llvm-svn: 18138
 2004-11-23 05:54:25 +00:00
Chris Lattner
3e3ba3b1cf Remove some dead code 
llvm-svn: 18136
 2004-11-22 23:07:22 +00:00
Chris Lattner
5b68bdb2ce Comment out a couple of unused instructions. 
llvm-svn: 18135
 2004-11-22 23:07:01 +00:00
Chris Lattner
a020fc1650 Disable this. 
llvm-svn: 18130
 2004-11-22 21:51:40 +00:00
Chris Lattner
bab8204396 This chunk of code needs to be rewritten 
llvm-svn: 18127
 2004-11-22 21:45:54 +00:00
Nate Begeman
7ec36ad70f Fix Shootout-C++/wc, which was broken by my recent changes to emit fewer 
reg-reg copies.  The necessary conditions for this bug are a GEP that is
used outside the basic block in which it is defined, whose components
other than the pointer are all constant zero, and where the use is
selected before the definition (backwards branch to successsor block).

llvm-svn: 18084
 2004-11-21 05:14:06 +00:00
Chris Lattner
3e3645938e ignore generated files. 
llvm-svn: 18072
 2004-11-21 00:00:54 +00:00
Chris Lattner
3ff7bafe17 Remove this method, it's not clear how it could be implemented indep of 32 or 64-bit mode 
llvm-svn: 18038
 2004-11-20 04:17:17 +00:00
Chris Lattner
e3461cf0bc getJITStubForFunction is optional and unimplemented, just remove it. 
llvm-svn: 18036
 2004-11-20 04:14:44 +00:00
Nate Begeman
83cded0ecb Eliminate another 6k register copies that the register allocator would just 
coalesce out of hbd.  Speeds up compilation by 2% (0.6s)

llvm-svn: 17987
 2004-11-19 08:01:16 +00:00
Nate Begeman
de1fd6a162 Generate fewer reg-reg copies for the register allocator to deal with. 
This eliminates over 2000 in hbd alone.

llvm-svn: 17973
 2004-11-19 02:06:40 +00:00
Nate Begeman
567d30174a Eliminate another common source of moves that the register allocator 
shouldn't be forced to coalesce for us: folded GEP operations.  This too
fires thousands of times across the testsuite.

llvm-svn: 17947
 2004-11-18 07:22:46 +00:00
Nate Begeman
3e1aaef2b5 When accessing the base register for global variables, use the register 
directly rather than making a copy for the register allocator to coalesce.
This kills thousands of live intervals across the testsuite.

llvm-svn: 17946
 2004-11-18 06:51:29 +00:00
Nate Begeman
7e254235e2 Clean up and fix cast codegen by removing cases that are handled elsewhere, 
and properly emitting signed short to unsigned int.  This fixes the last
regression vs. the CBE, MultiSource/Applications/hbd.

llvm-svn: 17942
 2004-11-18 04:56:53 +00:00
Chris Lattner
c13149e03e Simplify namespaces 
llvm-svn: 17870
 2004-11-16 04:47:33 +00:00
Misha Brukman
757502af07 Add BCTR and LWZU instruction opcodes 
llvm-svn: 17851
 2004-11-15 21:20:09 +00:00
Misha Brukman
0d900050be Handle GhostLinkage (should not ever reach the assembly printing stage!) 
llvm-svn: 17749
 2004-11-14 21:03:30 +00:00
Misha Brukman
c98cd22aae Fix build on Linux/PowerPC64 using SuSE GCC (#undef PPC) 
llvm-svn: 17744
 2004-11-14 20:34:01 +00:00
Nate Begeman
398bd2b9f6 Allow hbd to be bugpointable on darwin by fixing common and linkonce codegen 
llvm-svn: 17637
 2004-11-09 04:01:18 +00:00
Nate Begeman
a0c15f3ffd Put int the getReg cast optimization from x86 so that we generate fewer 
move instructions for the register allocator to coalesce.

llvm-svn: 17608
 2004-11-08 02:25:40 +00:00
Nate Begeman
a7541b19fc Disable bogus cast elimination when the cast is used by a setcc instruction. 
llvm-svn: 17583
 2004-11-07 20:23:42 +00:00
Nate Begeman
bc8bc24d28 Thanks to sabre for pointing out that we were incorrectly codegen'ing 
int test(int x) { return 32768 - x; }

Fixed by teaching the function that checks a constant's validity to be used
as an immediate argument about subtract-from instructions.

llvm-svn: 17476
 2004-11-04 19:43:18 +00:00
Reid Spencer
d3f7233495 Change Library Names Not To Conflict With Others When Installed 
llvm-svn: 17286
 2004-10-27 23:18:45 +00:00
Nate Begeman
46c3a8875f Remove file that is no longer used, and move include of MRegisterInfo.h 
from PowerPCFrameInfo.h to PowerPCAsmPrinter.cpp where it is actually
needed.

llvm-svn: 17244
 2004-10-26 06:02:38 +00:00
Nate Begeman
7c3c97af10 Eliminate usage of MRegisterInfo::getRegClass(physreg) 
llvm-svn: 17240
 2004-10-26 05:40:45 +00:00
Nate Begeman
ae98298003 Update to-do list 
llvm-svn: 17235
 2004-10-26 04:10:53 +00:00
Nate Begeman
113f516f6b Fix treecc. Also fix a latent bug in emitBinaryConstOperation that would 
allow and const, 0 to be incorrectly codegen'd into a rlwinm instruction.

llvm-svn: 17234
 2004-10-26 03:48:25 +00:00
Chris Lattner
9c356da87d Disable the JIT until it can sorta kinda work. 
llvm-svn: 17230
 2004-10-25 20:53:41 +00:00
Nate Begeman
4b5ed899fd Implement more complete and correct codegen for bitfield inserts, as tested 
by the recently committed rlwimi.ll test file.  Also commit initial code
for bitfield extract, although it is turned off until fully debugged.

llvm-svn: 17207
 2004-10-24 10:33:30 +00:00
Misha Brukman
f8bd6fc901 * Correctly handle the MovePCtoLR pseudo-instr with a bl to next instr 
* Stop the confusion of using rv and Addr for global addresses: just use rv

llvm-svn: 17195
 2004-10-23 23:47:34 +00:00
Misha Brukman
58d9e43fa1 Add BA, BL, and BLA opcodes 
llvm-svn: 17193
 2004-10-23 20:29:24 +00:00
Misha Brukman
0342392149 * Do not emit IMPLICIT_DEF pseudo-instructions 
* Convert register numbers from their opcode value to the real value, e.g.
  PPC::R1 => 1 and PPC::F1 => 1
* Add correct handling of loading of global values which are PC-relative --
  implement ha16() and lo16()

llvm-svn: 17190
 2004-10-23 18:28:01 +00:00
Misha Brukman
bd6a01c3ef DForm_1, particularly used by store instructions, needs the immediate operand to 
be listed second as that is how the instructions are usually created (and is the
correct asm syntax) so that it's assembled correctly from its constituents

llvm-svn: 17183
 2004-10-23 06:08:38 +00:00
Misha Brukman
e4ae05e099 Fix the SPR field for MTLR, MFLR, MTCTR, and MFCTR instructions. 
The decimal value given in the manual (8 or 9) really needs to be multiplied by
a factor of 32 because of the group of 5 zero bits after the register code.

llvm-svn: 17182
 2004-10-23 06:05:49 +00:00
Misha Brukman
5cea06807d The value of the XO field for MFLR and MFCTR is 339, not 399 
llvm-svn: 17181
 2004-10-23 05:38:55 +00:00
Misha Brukman
39d23c81d4 Remove extraneous blank line 
llvm-svn: 17180
 2004-10-23 04:59:22 +00:00
Misha Brukman
c660c6c514 Align function arguments in function headers 
llvm-svn: 17178
 2004-10-23 04:58:32 +00:00
Nate Begeman
91ef127999 Kill casts from integer types to unsigned byte, when the cast was only used 
as the shift amount operand to a shift instruction.  This was causing us to
emit unnecessary clear operations for code such as:
int foo(int x) { return 1 << x; }

llvm-svn: 17175
 2004-10-23 00:50:23 +00:00
Reid Spencer
019621a1ea Adjust to changes in Makefile.rules 
llvm-svn: 17167
 2004-10-22 21:02:08 +00:00
Reid Spencer
e48ba34fd4 We won't use automake 
llvm-svn: 17155
 2004-10-22 03:35:04 +00:00
Misha Brukman
66a092f3df Remove debug code emitter from the JIT 
llvm-svn: 17151
 2004-10-21 03:07:38 +00:00
Alkis Evlogimenos
67449982b8 Make this compile. 
llvm-svn: 17150
 2004-10-21 02:44:16 +00:00
Misha Brukman
9514a75e36 * Added basic support for JITing functions, basic blocks, instruction encoding, 
including registers, constants, and partial support for global addresses
* The JIT is disabled by default to allow building llvm-gcc, which wants to test
  running programs during configure

llvm-svn: 17149
 2004-10-21 01:42:02 +00:00
Nate Begeman
d7cbf1d28e Don't clear or sign extend bool->int. This fires a few dozen times on the test suite 
llvm-svn: 17147
 2004-10-20 21:55:41 +00:00
Reid Spencer
ce514b1c2c Initial automake generated Makefile template 
llvm-svn: 17136
 2004-10-18 23:55:41 +00:00
Nate Begeman
1c408f7319 Generate correct stubs for weak-linked symbols 
llvm-svn: 17101
 2004-10-17 23:01:34 +00:00
Reid Spencer
9a97056275 PPC32GenCodeEmitter instead of PowerPCGenCodeEmitter 
llvm-svn: 17087
 2004-10-17 14:59:38 +00:00
Nate Begeman
f9aac7846c Implement bitfield insert by recognizing the following pattern: 
1. optional shift left
2. and x, immX
3. and y, immY
4. or z, x, y
==> rlwimi z, x, y, shift, mask begin, mask end

where immX == ~immY and immX is a run of set bits. This transformation
fires 32 times on voronoi, once on espresso, and probably several
dozen times on external benchmarks such as gcc.

To put this in terms of actual code generated for
struct B { unsigned a : 3; unsigned b : 2; };
void storeA (struct B *b, int v) { b->a = v;}
void storeB (struct B *b, int v) { b->b = v;}

Old:
_storeA:
        rlwinm r2, r4, 0, 29, 31
        lwz r4, 0(r3)
        rlwinm r4, r4, 0, 0, 28
        or r2, r4, r2
        stw r2, 0(r3)
        blr

_storeB:
        rlwinm r2, r4, 3, 0, 28
        rlwinm r2, r2, 0, 27, 28
        lwz r4, 0(r3)
        rlwinm r4, r4, 0, 29, 26
        or r2, r2, r4
        stw r2, 0(r3)
        blr

New:
_storeA:
        lwz r2, 0(r3)
        rlwimi r2, r4, 0, 29, 31
        stw r2, 0(r3)
        blr

_storeB:
        lwz r2, 0(r3)
        rlwimi r2, r4, 3, 27, 28
        stw r2, 0(r3)
        blr

llvm-svn: 17078
 2004-10-17 05:19:20 +00:00
Nate Begeman
d4c970aa3d Finally fix one of the oldest FIXMEs in the PowerPC backend: correctly 
flag rotate left word immediate then mask insert (rlwimi) as a two-address
instruction, and update the ISel usage of the instruction accordingly.

This will allow us to properly schedule rlwimi, and use it to efficiently
codegen bitfield operations.

llvm-svn: 17068
 2004-10-16 20:43:38 +00:00
Chris Lattner
3662abfd5a ADd support for undef and unreachable 
llvm-svn: 17050
 2004-10-16 18:13:47 +00:00
Nate Begeman
d8183bd297 Better codegen of binary integer ops with 32 bit immediate operands. 
This transformation fires a few dozen times across the testsuite.

For example, int test2(int X) { return X ^ 0x0FF00FF0; }
Old:
_test2:
        lis r2, 4080
        ori r2, r2, 4080
        xor r3, r3, r2
        blr

New:
_test2:
        xoris r3, r3, 4080
        xori r3, r3, 4080
        blr

llvm-svn: 17004
 2004-10-15 00:50:19 +00:00
Misha Brukman
66261f021d * Claim to support machine code emission - return false from 
addPassesToEmitMachineCode()
* Add support for registers and constants in getMachineOpValue()

This enables running "int main() { ret 0 }" via the PowerPC JIT.

llvm-svn: 16983
 2004-10-14 06:39:56 +00:00
Misha Brukman
cb4130c28c * Include the real (generated) version of getBinaryCodeForInstr() 
* Add implementation of getMachineOpValue() for generated code emitter
* Convert assert()s in unimplemented functions to abort()s so that non-debug
  builds fail predictably
* Add file header comments

llvm-svn: 16981
 2004-10-14 06:07:25 +00:00
Misha Brukman
11d1764f74 * Make a PPC32-specific code emitter because we have separate classes for 32- 
and 64-bit code emitters that cannot share code unless we use virtual
  functions
* Identify components being built by tablegen with more detail by assigning them
  to PowerPC, PPC32, or PPC64 more specifically; also avoids seeing 'building
  PowerPC XYZ' messages twice, where one is for PPC32 and one for PPC64

llvm-svn: 16980
 2004-10-14 06:04:56 +00:00
Misha Brukman
5e8bfd0675 There is only one field in an instruction, and that is `Inst', the final view of 
the instruction binary format, all others are simply operands and should not
have the `field' label

llvm-svn: 16978
 2004-10-14 05:55:37 +00:00
Misha Brukman
47c2236ae9 PowerPC instruction definitions use LittleEndian-style encoding [0..31] 
llvm-svn: 16977
 2004-10-14 05:54:38 +00:00
Reid Spencer
e6418ec30f Update to reflect changes in Makefile rules. 
llvm-svn: 16950
 2004-10-13 11:46:52 +00:00
Reid Spencer
1b7459b29d Initial version of automake Makefile.am file. 
llvm-svn: 16893
 2004-10-10 22:20:40 +00:00
Chris Lattner
6ff0fd4837 bling bling! 
llvm-svn: 16873
 2004-10-10 16:26:13 +00:00
Nate Begeman
dfefd2f3fc Implement logical and with an immediate that consists of a contiguous block 
of one or more 1 bits (may wrap from least significant bit to most
significant bit) as the rlwinm rather than andi., andis., or some longer
instructons sequence.

int andn4(int z) { return z & -4; }
int clearhi(int z) { return z & 0x0000FFFF; }
int clearlo(int z) { return z & 0xFFFF0000; }
int clearmid(int z) { return z & 0x00FFFF00; }
int clearwrap(int z) { return z & 0xFF0000FF; }

_andn4:
        rlwinm r3, r3, 0, 0, 29
        blr

_clearhi:
        rlwinm r3, r3, 0, 16, 31
        blr

_clearlo:
        rlwinm r3, r3, 0, 0, 15
        blr

_clearmid:
        rlwinm r3, r3, 0, 8, 23
        blr

_clearwrap:
        rlwinm r3, r3, 0, 24, 7
        blr

llvm-svn: 16832
 2004-10-08 02:49:24 +00:00
Nate Begeman
370b1b7a9a Several fixes and enhancements to the PPC32 backend. 
1. Fix an illegal argument to getClassB when deciding whether or not to
   sign extend a byte load.

2. Initial addition of isLoad and isStore flags to the instruction .td file
   for eventual use in a scheduler.

3. Rewrite of how constants are handled in emitSimpleBinaryOperation so
   that we can emit the PowerPC shifted immediate instructions far more
   often.  This allows us to emit the following code:

int foo(int x) { return x | 0x00F0000; }

_foo:
.LBB_foo_0:     ; entry
        ; IMPLICIT_DEF
        oris r3, r3, 15
        blr

llvm-svn: 16826
 2004-10-07 22:30:03 +00:00
Nate Begeman
76d2a77998 Add ori reg, reg, 0 as a move instruction. This can be generated from 
loading a 32bit constant into a register whose low halfword is all zeroes.

We now omit the ori after the lis for the following C code:

int bar(int y) { return y * 0x00F0000; }

_bar:
.LBB_bar_0:     ; entry
        ; IMPLICIT_DEF
        lis r2, 15
        mullw r3, r3, r2
        blr

llvm-svn: 16825
 2004-10-07 22:26:12 +00:00
Nate Begeman
f60feea650 Remove unnecessary header include 
llvm-svn: 16824
 2004-10-07 22:24:32 +00:00
Chris Lattner
38fbf09104 Correct some typeos 
llvm-svn: 16770
 2004-10-06 16:28:24 +00:00
Nate Begeman
79d42a185e Turning on fsel code gen now that we can do so would be good. 
llvm-svn: 16765
 2004-10-06 11:03:30 +00:00
Nate Begeman
7b4fe83ba8 Implement floating point select for lt, gt, le, ge using the powerpc fsel 
instruction.

Now, rather than emitting the following loop out of bisect:
.LBB_main_19:	; no_exit.0.i
	rlwinm r3, r2, 3, 0, 28
	lfdx f1, r3, r27
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f2, lo16(.CPI_main_1-"L00000$pb")(r3)
	fsub f2, f2, f1
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f4, lo16(.CPI_main_1-"L00000$pb")(r3)
	fcmpu cr0, f1, f4
	bge .LBB_main_64	; no_exit.0.i
.LBB_main_63:	; no_exit.0.i
	b .LBB_main_65	; no_exit.0.i
.LBB_main_64:	; no_exit.0.i
	fmr f2, f1
.LBB_main_65:	; no_exit.0.i
	addi r3, r2, 1
	rlwinm r3, r3, 3, 0, 28
	lfdx f1, r3, r27
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f4, lo16(.CPI_main_1-"L00000$pb")(r3)
	fsub f4, f4, f1
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f5, lo16(.CPI_main_1-"L00000$pb")(r3)
	fcmpu cr0, f1, f5
	bge .LBB_main_67	; no_exit.0.i
.LBB_main_66:	; no_exit.0.i
	b .LBB_main_68	; no_exit.0.i
.LBB_main_67:	; no_exit.0.i
	fmr f4, f1
.LBB_main_68:	; no_exit.0.i
	fadd f1, f2, f4
	addis r3, r30, ha16(.CPI_main_2-"L00000$pb")
	lfd f2, lo16(.CPI_main_2-"L00000$pb")(r3)
	fmul f1, f1, f2
	rlwinm r3, r2, 3, 0, 28
	lfdx f2, r3, r28
	fadd f4, f2, f1
	fcmpu cr0, f4, f0
	bgt .LBB_main_70	; no_exit.0.i
.LBB_main_69:	; no_exit.0.i
	b .LBB_main_71	; no_exit.0.i
.LBB_main_70:	; no_exit.0.i
	fmr f0, f4
.LBB_main_71:	; no_exit.0.i
	fsub f1, f2, f1
	addi r2, r2, -1
	fcmpu cr0, f1, f3
	blt .LBB_main_73	; no_exit.0.i
.LBB_main_72:	; no_exit.0.i
	b .LBB_main_74	; no_exit.0.i
.LBB_main_73:	; no_exit.0.i
	fmr f3, f1
.LBB_main_74:	; no_exit.0.i
	cmpwi cr0, r2, -1
	fmr f16, f0
	fmr f17, f3
	bgt .LBB_main_19	; no_exit.0.i

We emit this instead:
.LBB_main_19:	; no_exit.0.i
	rlwinm r3, r2, 3, 0, 28
	lfdx f1, r3, r27
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f2, lo16(.CPI_main_1-"L00000$pb")(r3)
	fsub f2, f2, f1
	fsel f1, f1, f1, f2
	addi r3, r2, 1
	rlwinm r3, r3, 3, 0, 28
	lfdx f2, r3, r27
	addis r3, r30, ha16(.CPI_main_1-"L00000$pb")
	lfd f4, lo16(.CPI_main_1-"L00000$pb")(r3)
	fsub f4, f4, f2
	fsel f2, f2, f2, f4
	fadd f1, f1, f2
	addis r3, r30, ha16(.CPI_main_2-"L00000$pb")
	lfd f2, lo16(.CPI_main_2-"L00000$pb")(r3)
	fmul f1, f1, f2
	rlwinm r3, r2, 3, 0, 28
	lfdx f2, r3, r28
	fadd f4, f2, f1
	fsub f5, f0, f4
	fsel f0, f5, f0, f4
	fsub f1, f2, f1
	addi r2, r2, -1
	fsub f2, f1, f3
	fsel f3, f2, f3, f1
	cmpwi cr0, r2, -1
	fmr f16, f0
	fmr f17, f3
	bgt .LBB_main_19	; no_exit.0.i

llvm-svn: 16764
 2004-10-06 09:53:04 +00:00
Nate Begeman
65376f660e Generate better code by being far less clever when it comes to the select instruction. Don't create overlapping register lifetimes 
llvm-svn: 16580
 2004-09-29 05:00:31 +00:00
Nate Begeman
a8b079e16a improve Type::BoolTy codegen by eliminating unnecessary clears and sign extends 
llvm-svn: 16578
 2004-09-29 03:45:33 +00:00
Nate Begeman
dc50ea0d82 To go along with sabre's improved InstCombining, improve recognition of 
integers that we can use as immediate values in instructions.

Example from yacr2:
-       lis r10, -1
-       ori r10, r10, 65535
-       add r28, r28, r10
+       addi r28, r28, -1
        addi r7, r7, 1
        addi r9, r9, 1
        b .LBB_main_9   ; loopentry.1.i214

llvm-svn: 16566
 2004-09-29 02:35:05 +00:00
Nate Begeman
921a44443d Correct some BuildMI arguments for the upcoming simple scheduler 
llvm-svn: 16519
 2004-09-27 05:08:17 +00:00
Nate Begeman
75f0d35dc6 Fix the last of the major PPC GEP folding deficiencies. This will allow 
the ISel to use indexed and non-zero immediate offsets for GEPs that have
more than one use.  This is common for instruction sequences such as a load
followed by a modify and store to the same address.

llvm-svn: 16493
 2004-09-23 05:31:33 +00:00
Nate Begeman
61d1797c03 add optimized code sequences for setcc x, 0 
llvm-svn: 16478
 2004-09-22 04:40:25 +00:00
Misha Brukman
bd9f406b0b s/ISel/PPC64ISel/ to have unique class names for debugging via gdb because the 
C++ front-end in gcc does not mangle classes in anonymous namespaces correctly.

llvm-svn: 16471
 2004-09-21 18:22:33 +00:00
Misha Brukman
6ad6dd2ab9 s/ISel/PPC32ISel/ to have unique class names for debugging via gdb because the 
C++ front-end in gcc does not mangle classes in anonymous namespaces correctly.

llvm-svn: 16470
 2004-09-21 18:22:19 +00:00
Chris Lattner
aee36bb527 Revamp the Register class, and allow the use of the RegisterGroup class to 
specify aliases directly in register definitions.

Patch contributed by Jason Eckhardt!

llvm-svn: 16330
 2004-09-14 04:17:02 +00:00
Nate Begeman
ce6d62eac7 Add 64 bit divide instructions, and use them 
llvm-svn: 16198
 2004-09-06 18:46:59 +00:00
Misha Brukman
8e6e187922 * Change PPC32AsmPrinter => PowerPCAsmPrinter since it is now shared between 
Darwin and AIX and is not 32- or 64-bit specific
* Bring back PowerPC.td as a result, to make it use the `PowerPC' class name
* Adjust Makefile accordingly

llvm-svn: 16174
 2004-09-05 02:42:44 +00:00
Misha Brukman
f55a7b3afa Renamed PPC32AsmPrinter.cpp => PowerPCAsmPrinter.cpp as the Darwin and AIX asm 
printers are now unified into one file.

llvm-svn: 16173
 2004-09-05 02:27:37 +00:00
Nate Begeman
56a134d07a Include MathExtras.h to fix build breakage, thanks to Vladimir 
llvm-svn: 16164
 2004-09-04 14:51:26 +00:00
Nate Begeman
e816600b3e All PPC instructions are now auto-printed 
32 and 64 bit AsmWriters unified
Darwin and AIX specific features of AsmWriter split out

llvm-svn: 16163
 2004-09-04 05:00:00 +00:00
Nate Begeman
3bad485eec Convert remaining X-Form and Pseudo instructions over to asm writer 
llvm-svn: 16142
 2004-09-02 08:13:00 +00:00
Reid Spencer
c4abcbefb1 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
 2004-09-01 22:55:40 +00:00
Nate Begeman
220175aa4d convert M and MD form instructions to generated asm writer 
llvm-svn: 16121
 2004-08-31 02:28:08 +00:00
Nate Begeman
e58512a61c Move yet more instructions over to being printed by the generated asm writer 
llvm-svn: 16112
 2004-08-30 02:28:06 +00:00
Nate Begeman
7792aa1f8b Convert A-Form instructions to auto-generated asm writer 
llvm-svn: 16107
 2004-08-29 22:45:13 +00:00
Nate Begeman
68e2dd66af Improvements to int->float cast code for PPC-64 
llvm-svn: 16105
 2004-08-29 22:02:43 +00:00
Nate Begeman
923af3763d Implement the following missing functionality in the PPC backend: 
cast fp->bool
cast ulong->fp
algebraic right shift long by non-constant value
These changes tested across most of the test suite.  Fixes Regression/casts

llvm-svn: 16081
 2004-08-29 08:19:32 +00:00
Nate Begeman
c0e42be976 Register sizes are in bits, not bytes 
llvm-svn: 16070
 2004-08-27 04:28:10 +00:00
Nate Begeman
0069f07741 Kill a majority of unnecessary sign extensions for byte loads 
llvm-svn: 15991
 2004-08-22 08:10:15 +00:00
Nate Begeman
72ec463dc7 Don't hard code the offset of the saved R31 in functions with frame pointers 
llvm-svn: 15990
 2004-08-22 08:09:17 +00:00
Nate Begeman
e6aace2ecb Back out branchless SetCC code. While it helped a lot in some cases, it 
hurt a lot in others.  Instead, improve branching version of SetCC and
Select instructions.  The old code will be in CVS should we ever need to
dig it up again.

llvm-svn: 15979
 2004-08-21 20:42:14 +00:00
Chris Lattner
15593f74c1 Switch from bytes to bits for alignment. 
Also, change GPRC for PPC32 to align on 32-bit boundary instead of 64-bit

llvm-svn: 15975
 2004-08-21 20:14:40 +00:00
Chris Lattner
db3e26f50a Reduce uses of getRegClass 
llvm-svn: 15968
 2004-08-21 19:51:17 +00:00
Chris Lattner
23a0219a11 Fix warning 
llvm-svn: 15964
 2004-08-21 19:11:03 +00:00
Nate Begeman
dd700ce5e4 Move XForm instructions over to the auto-generated asm writer 
llvm-svn: 15962
 2004-08-21 05:56:39 +00:00
Nate Begeman
6c4bd28dc1 remove some things from the todo list. 
llvm-svn: 15956
 2004-08-20 18:46:54 +00:00
Chris Lattner
cd2b92c36e Do not register ppc64 yet, as it breaks the SparcV9 backend 
llvm-svn: 15955
 2004-08-20 18:09:18 +00:00
Nate Begeman
2f68d05d47 Implement code to convert SetCC into straight line code where appropriate. Add necessary instructions for this transformation to the .td file. 
llvm-svn: 15952
 2004-08-20 09:56:22 +00:00
Misha Brukman
8bfcf0d2e9 Fix opcodes being printed in caps (the more general fix may be `AsmWriter') 
llvm-svn: 15932
 2004-08-19 21:56:12 +00:00
Misha Brukman
1bdac3b68d Stack space for argument passing is 32 regardless of 32- vs. 64-bit arch. 
Thanks to Nate Begeman for pointing this out.

llvm-svn: 15930
 2004-08-19 21:51:19 +00:00
Misha Brukman
70f027b623 LR needs to be saved at 16-byte offset on a 64-bit arch 
llvm-svn: 15929
 2004-08-19 21:36:14 +00:00
Misha Brukman
2c3423694a On 64-bit PowerPC, pointers are 8 bytes, so parameter area offset is 48, not 24 
llvm-svn: 15928
 2004-08-19 21:34:05 +00:00
Misha Brukman
21df6f6757 This PHI has 4 additional operands, not 2. 
llvm-svn: 15926
 2004-08-19 21:00:12 +00:00
Misha Brukman
e438dc224e Use the appropriate 64-bit register description file. 
llvm-svn: 15922
 2004-08-19 19:36:57 +00:00
Misha Brukman
ffaa056155 Fix more remaining 32-bit vestiges of PowerPC 
llvm-svn: 15919
 2004-08-19 18:49:58 +00:00
Misha Brukman
409030d6b4 Fix another vestige of the 32-bit PowerPC backend. 
llvm-svn: 15918
 2004-08-19 16:50:30 +00:00
Misha Brukman
9ec6a58d15 Correct character prepended to global symbols ('.'), use Mangler consistently 
llvm-svn: 15917
 2004-08-19 16:33:56 +00:00
Misha Brukman
b2f68d6752 * Eliminate global base register, r2 is used for that on AIX/PowerPC 
* Fix bug from 32-bit PowerPC days of 2-register long split

llvm-svn: 15916
 2004-08-19 16:29:25 +00:00
Misha Brukman
7a0735b46b Wrap long lines. 
llvm-svn: 15915
 2004-08-19 16:28:30 +00:00
Nate Begeman
0975cdde75 Convert casts that will have no effect into move instructions. 
llvm-svn: 15914
 2004-08-19 08:07:50 +00:00
Nate Begeman
81c97654da Clean up floating point instruction selection. 
Change int->float cast code to put conversion constants in constant pool.
Shorten code sequence for constant pool fp loads.
Remove LOADLoDirect/LOADLoIndirect psuedo instructions and tweak asmwriter

llvm-svn: 15913
 2004-08-19 05:20:54 +00:00
Chris Lattner
8c5096d223 Rename var 
llvm-svn: 15897
 2004-08-18 02:22:55 +00:00
Misha Brukman
631bd1c155 This file is no longer used. 
llvm-svn: 15893
 2004-08-17 20:23:33 +00:00
Chris Lattner
8b5695de66 Start using alignment output routines from AsmPrinter. 
Changes to make this more similar to the X86 asmprinter

Fix overalignment of globals.

llvm-svn: 15891
 2004-08-17 19:26:03 +00:00
Chris Lattner
7ab985b9a2 Print comments with ; 
llvm-svn: 15881
 2004-08-17 16:27:26 +00:00
Nate Begeman
ca0ea7b9ba Re-fix hiding the Frame Pointer from the register allocator in functions 
that have a frame pointer.  This change fixes Burg.  In addition, make
the necessary changes to floating point code gen and constant loading after
Chris Lattner's fixes to the asm writer.  These changes fix MallocBench/gs

llvm-svn: 15873
 2004-08-17 07:17:44 +00:00
Chris Lattner
2e24f55588 Use the emitGlobalConstant defined in AsmPrinter 
llvm-svn: 15869
 2004-08-17 06:37:12 +00:00
Chris Lattner
3bc964c8fb New, more general, interface. 
llvm-svn: 15866
 2004-08-17 06:07:43 +00:00
Misha Brukman
4434e4ce05 Rewrite targets/rules to generate files for just PowerPC or PPC{32,64} 
llvm-svn: 15862
 2004-08-17 05:11:54 +00:00
Misha Brukman
35826543f8 Register classes are target-dependent 
llvm-svn: 15861
 2004-08-17 05:10:31 +00:00
Misha Brukman
47fc7a5955 #include <map> is not necessary here 
llvm-svn: 15860
 2004-08-17 05:09:39 +00:00
Misha Brukman
c358f5b8ef `PowerPC' is no longer a real target 
llvm-svn: 15859
 2004-08-17 05:09:10 +00:00
Misha Brukman
a73414f1da Move variables and methods which need PPC{32,64}* distinction to subclasses 
llvm-svn: 15858
 2004-08-17 05:08:44 +00:00
Misha Brukman
17c41c8bed No need for an `is64bit' flag 
llvm-svn: 15857
 2004-08-17 05:06:47 +00:00
Misha Brukman
471143bc94 PowerPCInstrInfo and PowerPCRegisterInfo have gone away; they are replaced 
by 32- and 64-bit customized files, named appropriately.

llvm-svn: 15856
 2004-08-17 05:05:00 +00:00
Misha Brukman
d5acc2ec78 Consistently name passed with 32 or 64 in their name 
llvm-svn: 15855
 2004-08-17 05:02:58 +00:00
Misha Brukman
52079a6264 PowerPCRegisterInfo no longer takes a bool to differentiate 32 vs 64 bits 
llvm-svn: 15854
 2004-08-17 05:02:18 +00:00
Misha Brukman
5e14dba4fa The PowerPCInstrInfo class has gone away. 
llvm-svn: 15853
 2004-08-17 05:00:46 +00:00
Misha Brukman
daf998c35f PowerPCInstrInfo has gone away, PPC32 and PPC64 share opcodes. 
llvm-svn: 15852
 2004-08-17 04:58:50 +00:00
Misha Brukman
38fe66d9d2 PowerPC 32-/64-bit split: Part II, 64-bit customizations on PowerPC 
llvm-svn: 15851
 2004-08-17 04:57:37 +00:00
Misha Brukman
6ce030bf87 PowerPC 32-/64-bit split: Part I, PPC32* bit files, adapted from former PowerPC* 
llvm-svn: 15850
 2004-08-17 04:55:41 +00:00
Chris Lattner
e4eb00de15 Print float constants as 4 byte values. 
Also, fix endianness problems when cross compiling from little-endian host.

llvm-svn: 15847
 2004-08-17 02:48:44 +00:00