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e277f75880
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3885 Commits

Author SHA1 Message Date
Nick Lewycky
e277f75880 Fix typo, psuedo -> pseudo. 
llvm-svn: 60651
 2008-12-07 03:49:52 +00:00
Chris Lattner
00104cf8f8 add a note 
llvm-svn: 60632
 2008-12-06 22:49:05 +00:00
Dale Johannesen
c6404f98b2 Forgot a file. 
llvm-svn: 60609
 2008-12-05 21:55:35 +00:00
Dale Johannesen
f5a072c388 Make LoopStrengthReduce smarter about hoisting things out of 
loops when they can be subsumed into addressing modes.

Change X86 addressing mode check to realize that
some PIC references need an extra register.
(I believe this is correct for Linux, if not, I'm sure
someone will tell me.)

llvm-svn: 60608
 2008-12-05 21:47:27 +00:00
Evan Cheng
03ef7cf749 Reason #3 from 60595 doesn't hold true. If we can fold a PIC load from constpool into a use, the rewrite happens at time of spill (not in VirtRegMap). Later on, if the GlobalBaseReg is spilled, the spiller can see the use uses GlobalBaseReg and do the right thing. 
llvm-svn: 60596
 2008-12-05 17:41:31 +00:00
Evan Cheng
144447bfa0 Effectively undo 60461 in PIC mode which simply transform V_SET0 / V_SETALLONES into a load from constpool in order to fold into restores. This is not safe to do when PIC base is being used for a number of reasons: 
1. GlobalBaseReg may have been spilled.
2. It may not be live at the use.
3. Spiller doesn't know this is happening so it won't prevent GlobalBaseReg from being spilled later (That by itself is a nasty hack. It's needed because we don't insert the reload until later).

llvm-svn: 60595
 2008-12-05 17:23:48 +00:00
Evan Cheng
1b795803dd Re-did 60519. It turns out Darwin's handling of hidden visibility symbols are a bit more complicate than I expected. Both declarations and weak definitions still need a stub indirection. However, the stubs are in data section and they contain the addresses of the actual symbols. 
llvm-svn: 60571
 2008-12-05 01:06:39 +00:00
Bill Wendling
a0466523bd Temporarily revert r60519. It was causing a bootstrap failure: 
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -DHAVE_CONFIG_H -I. -I../../../llvm-gcc.src/libgomp -I. -I../../../llvm-gcc.src/libgomp/config/posix -I../../../llvm-gcc.src/libgomp -Wall -pthread -Werror -O2 -g -O2 -MT barrier.lo -MD -MP -MF .deps/barrier.Tpo -c ../../../llvm-gcc.src/libgomp/barrier.c  -fno-common -DPIC -o .libs/barrier.o
checking for sys/file.h... /var/folders/zG/zGE-ZJOGFiGjv0B5cs5oYE+++TM/-Tmp-//cc34Jg5P.s:13:non-relocatable subtraction expression, "_gomp_tls_key" minus "L1$pb"
/var/folders/zG/zGE-ZJOGFiGjv0B5cs5oYE+++TM/-Tmp-//cc34Jg5P.s:13:symbol: "_gomp_tls_key" can't be undefined in a subtraction expression
make[4]: *** [barrier.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -DHAVE_CONFIG_H -I. -I../../../llvm-gcc.src/libgomp -I. -I../../../llvm-gcc.src/libgomp/config/posix -I../../../llvm-gcc.src/libgomp -Wall -pthread -Werror -O2 -g -O2 -MT alloc.lo -MD -MP -MF .deps/alloc.Tpo -c ../../../llvm-gcc.src/libgomp/alloc.c -o alloc.o >/dev/null 2>&1
yes
checking for sys/param.h... make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-target-libgomp] Error 2
make[1]: *** Waiting for unfinished jobs....

llvm-svn: 60527
 2008-12-04 04:07:00 +00:00
Evan Cheng
d4b7459179 Visibility hidden GVs do not require extra load of symbol address from the GOT or non-lazy-ptr. 
llvm-svn: 60519
 2008-12-04 01:56:50 +00:00
Evan Cheng
05ded29738 Use mmx (punpckldq VR64, (mmx_v_set0)) to clear high 32-bits of a VR64 register. 
llvm-svn: 60499
 2008-12-03 19:38:05 +00:00
Dan Gohman
74529a2226 Split foldMemoryOperand into public non-virtual and protected virtual 
parts, and add target-independent code to add/preserve
MachineMemOperands.

llvm-svn: 60488
 2008-12-03 18:43:12 +00:00
Dan Gohman
5dad0993a9 Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning. 
llvm-svn: 60487
 2008-12-03 18:15:48 +00:00
Dan Gohman
fc05cdda64 Extend X86's addFrameReference to add a MachineMemOperand for 
the frame reference. This will help post-RA scheduling determine
that spills to distinct stack slots are independent.

llvm-svn: 60486
 2008-12-03 18:11:40 +00:00
Rafael Espindola
0c800cf35e Fix bug 3140. 
Print a single parameter .file directive if we have an ELF target.

llvm-svn: 60480
 2008-12-03 11:01:37 +00:00
Evan Cheng
440e75e1d5 Refactor code. No functionality change. 
llvm-svn: 60478
 2008-12-03 08:38:43 +00:00
Bill Wendling
d2208d570b CC should only be a ConstantSDNode at this point. Just use 'cast' instead of 'dyn_cast'. 
llvm-svn: 60477
 2008-12-03 08:32:02 +00:00
Dan Gohman
ac6561793c Mark x86's V_SET0 and V_SETALLONES with isSimpleLoad, and teach X86's 
foldMemoryOperand how to "fold" them, by converting them into constant-pool
loads. When they aren't folded, they use xorps/cmpeqd, but for example when
register pressure is high, they may now be folded as memory operands, which
reduces register pressure.

Also, mark V_SET0 isAsCheapAsAMove so that two-address-elimination will
remat it instead of copying zeros around (V_SETALLONES was already marked).

llvm-svn: 60461
 2008-12-03 05:21:24 +00:00
Dan Gohman
86b0a220af Fix this comment to reflect that it applies to types other 
than just i32.

llvm-svn: 60455
 2008-12-03 01:39:44 +00:00
Dan Gohman
dcd4896f12 Fix byval arguments in the fastcc calling convention. The fastcc convention 
delegates to the regular x86-32 convention which handles byval, but only
after it handles a few cases, and it's necessary to handle byval before
handling those cases. This fixes PR3122 (and rdar://6400815), llvm-gcc
miscompiling LLVM.

llvm-svn: 60453
 2008-12-03 01:28:04 +00:00
Bill Wendling
580f12ae30 Second stab at target-dependent lowering of everyone's favorite nodes: [SU]ADDO 
- LowerXADDO lowers [SU]ADDO into an ADD with an implicit EFLAGS define. The
  EFLAGS are fed into a SETCC node which has the conditional COND_O or COND_C,
  depending on the type of ADDO requested.

- LowerBRCOND now recognizes if it's coming from a SETCC node with COND_O or
  COND_C set.

llvm-svn: 60388
 2008-12-02 01:06:39 +00:00
Bill Wendling
039240b301 Reapply r60382. This time, don't mark "ADC" nodes with "implicit EFLAGS". 
llvm-svn: 60385
 2008-12-02 00:07:05 +00:00
Bill Wendling
16840cba04 Temporarily revert r60382. It caused CodeGen/X86/i2k.ll and others to fail. 
llvm-svn: 60383
 2008-12-01 23:44:08 +00:00
Bill Wendling
628848b540 - Have "ADD" instructions return an implicit EFLAGS. 
- Add support for seto, setno, setc, and setnc instructions.

llvm-svn: 60382
 2008-12-01 23:30:42 +00:00
Duncan Sands
5de8739964 There are no longer any places that require a 
MERGE_VALUES node with only one operand, so get
rid of special code that only existed to handle
that possibility.

llvm-svn: 60349
 2008-12-01 11:41:29 +00:00
Duncan Sands
1fae2ea219 Change the interface to the type legalization method 
ReplaceNodeResults: rather than returning a node which
must have the same number of results as the original
node (which means mucking around with MERGE_VALUES,
and which is also easy to get wrong since SelectionDAG
folding may mean you don't get the node you expect),
return the results in a vector.

llvm-svn: 60348
 2008-12-01 11:39:25 +00:00
Eli Friedman
3b8efd50d7 A couple small cleanups, plus a new potential optimization. 
llvm-svn: 60286
 2008-11-30 07:52:27 +00:00
Duncan Sands
7fd4ea5847 Fix build with gcc-4.4: it doesn't like PICStyle 
being both a namespace and a variable name.

llvm-svn: 60208
 2008-11-28 09:29:37 +00:00
Bill Wendling
4a6eedb51d Comment out code that isn't entirely correct. 
llvm-svn: 60156
 2008-11-27 07:18:35 +00:00
Evan Cheng
f18016728c On x86 favors folding short immediate into some arithmetic operations (e.g. add, and, xor, etc.) because materializing an immediate in a register is expensive in turns of code size. 
e.g.
movl 4(%esp), %eax
addl $4, %eax

is 2 bytes shorter than

movl $4, %eax
addl 4(%esp), %eax

llvm-svn: 60139
 2008-11-27 00:49:46 +00:00
Bill Wendling
c60a07dbf2 Generate something sensible for an [SU]ADDO op when the overflow/carry flag is 
the conditional for the BRCOND statement. For instance, it will generate:

    addl %eax, %ecx
    jo LOF

instead of

    addl %eax, %ecx
    ; About 10 instructions to compare the signs of LHS, RHS, and sum.
    jl LOF

llvm-svn: 60123
 2008-11-26 22:37:40 +00:00
Dan Gohman
6a589b31f7 Fish kill flag annotations in PUSH instructions. 
llvm-svn: 60095
 2008-11-26 06:39:12 +00:00
Bill Wendling
0560ba7668 - Make lowering of "add with overflow" customizable by back-ends. 
- Mark "add with overflow" as having a custom lowering for X86. Give it a null
  lowering representation for now.

llvm-svn: 59971
 2008-11-24 19:21:46 +00:00
Evan Cheng
a19ef59d6c Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 
llvm-svn: 59953
 2008-11-24 07:34:46 +00:00
Mon P Wang
c9ba9d066e Added missing description for -disable-mmx option. 
llvm-svn: 59929
 2008-11-24 02:10:43 +00:00
Duncan Sands
f9ea1124c9 Rename SetCCResultContents to BooleanContents. In 
practice these booleans are mostly produced by SetCC,
however the concept is more general.

llvm-svn: 59911
 2008-11-23 15:47:28 +00:00
Mon P Wang
0f887d148c Added -disable-mmx using a patch from Preston Gurd. 
llvm-svn: 59901
 2008-11-23 04:37:22 +00:00
Anton Korobeynikov
ba74a11c9b Make a convenient helper for printing offsets. 
llvm-svn: 59872
 2008-11-22 16:15:34 +00:00
Mon P Wang
76b86c996e Allow XMM2 and XMM3 to be used for non ABI compliant code. 
llvm-svn: 59720
 2008-11-20 07:48:19 +00:00
Evan Cheng
b434100baa Eliminate a compile time warning. 
llvm-svn: 59677
 2008-11-19 23:21:11 +00:00
Stuart Hastings
545f47a2cb <rdar://problem/6351057> 
Discourage (allocate last) use of x86_64 R12 and R13 due to their
longer instruction encodings.

llvm-svn: 59644
 2008-11-19 17:19:35 +00:00
Dan Gohman
e5420a0ae9 Don't set neverHasSideEffects on x86's divide instructions, since 
they trap on divide-by-zero, and this side effect is otherwise
unmodeled.

llvm-svn: 59551
 2008-11-18 21:29:14 +00:00
Dan Gohman
04e99d0f3f Add more const qualifiers. This fixes build breakage from r59540. 
llvm-svn: 59542
 2008-11-18 19:49:32 +00:00
Oscar Fuentes
42942c0bc5 Adds extern "C" ints to the .cpp files that use RegisterTarget, as 
well as 2 files that use "Registrator"s. These are to be used by the
MSVC builds, as the Win32 linker does not include libs that are
otherwise unreferenced, even if global constructors in the lib have
side-effects.

Patch by Scott Graham!

llvm-svn: 59378
 2008-11-15 21:36:30 +00:00
Dale Johannesen
29e1b2e9fd Remove unneeded stuff from GRAD register class. 
llvm-svn: 59311
 2008-11-14 18:10:48 +00:00
Dale Johannesen
de9fdff884 Extend InlineAsm::C_Register to allow multiple specific registers 
(actually, code already all worked, only the comment
changed).  Use this to implement 'A' constraint on x86.
Fixes PR 1779.

llvm-svn: 59266
 2008-11-13 21:52:36 +00:00
Dan Gohman
229c65c05b Move the code that inserts X87 FP_REG_KILL instructions from a 
special-purpose hook to a new pass. Also, add check to see if any
x87 virtual registers are used, to avoid doing any work in the
common case that no x87 code is needed.

llvm-svn: 59190
 2008-11-12 22:55:05 +00:00
Evan Cheng
82b17df2b0 Add a README entry. 
llvm-svn: 59052
 2008-11-11 17:35:52 +00:00
Dan Gohman
fd00e20872 The 32-bit displacement field in an x86 address is signed. Arrange for it 
to be sign-extended when it is promoted to 64 bits for intermediate
offset calculations. The offset calculations are done as uint64_t so that
overflow conditions are well defined.

This fixes a problem which is currently hidden by the x86 AsmPrinter but
which was exposed by r58917 (which is temporarily reverted).  See PR3027
for details.

llvm-svn: 59044
 2008-11-11 15:52:29 +00:00
Dan Gohman
b5857c2859 Fix indentation. 
llvm-svn: 59004
 2008-11-10 22:09:58 +00:00
Evan Cheng
080c1a9fac Rename isGVNonLazyPtr to isIndirectSym to reflect how it will be used. 
llvm-svn: 58949
 2008-11-10 01:08:07 +00:00