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4043 Commits

Author SHA1 Message Date
Bill Wendling
74c3765291 Add sub/mul overflow intrinsics. This currently doesn't have a 
target-independent way of determining overflow on multiplication. It's very
tricky. Patch by Zoltan Varga!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60800 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 22:08:41 +00:00
Bill Wendling
c065b3f5ec Correct my English. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60753 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 07:55:31 +00:00
Bill Wendling
52370a1089 Add initial support for fast-isel of the [SU]ADDO intrinsics. It isn't 
complete. For instance, it lowers the common case into this less-than-optimal
code:

        addl    %ecx, %eax
        seto    %cl
        testb   %cl, %cl
        jne     LBB1_2  ## overflow

instead of:

        addl    %ecx, %eax
        jo      LBB1_2  ## overflow

That will come in a future commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60737 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 02:42:50 +00:00
Dan Gohman
55fdaec36a Fix a couple of mistaken switch case fall-throughs. Thanks to Bill 
for spotting these!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60728 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 23:50:06 +00:00
Evan Cheng
e4d1082b2c Re-apply 60689 now my head is screwed on right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60711 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 19:29:03 +00:00
Dan Gohman
2d4e9bc922 Revert 60689. It caused many regressions on Darwin targets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60705 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 17:38:02 +00:00
Dan Gohman
c8a1a3c426 Factor out the code for sign-extending/truncating gep indices 
and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 07:57:47 +00:00
Evan Cheng
dda346aa71 Perform cheap checks first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60689 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 06:52:43 +00:00
Nick Lewycky
6ecf5ce3e3 Fix typo, psuedo -> pseudo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60651 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-07 03:49:52 +00:00
Chris Lattner
f96ca79cf3 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60632 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-06 22:49:05 +00:00
Dale Johannesen
368eb2b22d Forgot a file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60609 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 21:55:35 +00:00
Dale Johannesen
203af58aea 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.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 21:47:27 +00:00
Evan Cheng
650d7f3ff4 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60596 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 17:41:31 +00:00
Evan Cheng
84100ba83d 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60595 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 17:23:48 +00:00
Evan Cheng
ae94e59416 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60571 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 01:06:39 +00:00
Bill Wendling
a8103dad4e 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....



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 04:07:00 +00:00
Evan Cheng
eb83dfde66 Visibility hidden GVs do not require extra load of symbol address from the GOT or non-lazy-ptr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60519 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 01:56:50 +00:00
Evan Cheng
62fb4f2e1c Use mmx (punpckldq VR64, (mmx_v_set0)) to clear high 32-bits of a VR64 register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:38:05 +00:00
Dan Gohman
c54baa2d43 Split foldMemoryOperand into public non-virtual and protected virtual 
parts, and add target-independent code to add/preserve
MachineMemOperands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60488 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:43:12 +00:00
Dan Gohman
15511cf166 Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60487 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:15:48 +00:00
Dan Gohman
8cf7713753 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:11:40 +00:00
Rafael Espindola
952b839ce9 Fix bug 3140. 
Print a single parameter .file directive if we have an ELF target.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 11:01:37 +00:00
Evan Cheng
370e5340a5 Refactor code. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60478 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 08:38:43 +00:00
Bill Wendling
0ea25cb941 CC should only be a ConstantSDNode at this point. Just use 'cast' instead of 'dyn_cast'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 08:32:02 +00:00
Dan Gohman
62c939d7d5 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 05:21:24 +00:00
Dan Gohman
c5a1a220ea Fix this comment to reflect that it applies to types other 
than just i32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60455 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:39:44 +00:00
Dan Gohman
e4300e271a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:28:04 +00:00
Bill Wendling
61edeb5ed2 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60388 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 01:06:39 +00:00
Bill Wendling
9f24874f2e Reapply r60382. This time, don't mark "ADC" nodes with "implicit EFLAGS". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 00:07:05 +00:00
Bill Wendling
e3b3c00454 Temporarily revert r60382. It caused CodeGen/X86/i2k.ll and others to fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 23:44:08 +00:00
Bill Wendling
a047bcacf2 - Have "ADD" instructions return an implicit EFLAGS. 
- Add support for seto, setno, setc, and setnc instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60382 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 23:30:42 +00:00
Duncan Sands
aaffa05d0a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60349 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 11:41:29 +00:00
Duncan Sands
1607f05cb7 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60348 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 11:39:25 +00:00
Eli Friedman
91db5271d2 A couple small cleanups, plus a new potential optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60286 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-30 07:52:27 +00:00
Duncan Sands
f9a67a8943 Fix build with gcc-4.4: it doesn't like PICStyle 
being both a namespace and a variable name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60208 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-28 09:29:37 +00:00
Bill Wendling
109872e360 Comment out code that isn't entirely correct. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60156 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 07:18:35 +00:00
Evan Cheng
884c70c912 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60139 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 00:49:46 +00:00
Bill Wendling
3fafd93560 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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60123 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-26 22:37:40 +00:00
Dan Gohman
25a1b47cc3 Fish kill flag annotations in PUSH instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60095 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-26 06:39:12 +00:00
Bill Wendling
41ea7e7eb3 - 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:21:46 +00:00
Evan Cheng
027fdbe3ba Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59953 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 07:34:46 +00:00
Mon P Wang
9f22a4aaaf Added missing description for -disable-mmx option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59929 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 02:10:43 +00:00
Duncan Sands
03228089d5 Rename SetCCResultContents to BooleanContents. In 
practice these booleans are mostly produced by SetCC,
however the concept is more general.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59911 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 15:47:28 +00:00
Mon P Wang
3c81d35e7d Added -disable-mmx using a patch from Preston Gurd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59901 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-23 04:37:22 +00:00
Anton Korobeynikov
7751ad92da Make a convenient helper for printing offsets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59872 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-22 16:15:34 +00:00
Mon P Wang
07239f13cd Allow XMM2 and XMM3 to be used for non ABI compliant code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59720 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-20 07:48:19 +00:00
Evan Cheng
eda60a8364 Eliminate a compile time warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59677 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-19 23:21:11 +00:00
Stuart Hastings
be362abe9c <rdar://problem/6351057> 
Discourage (allocate last) use of x86_64 R12 and R13 due to their
longer instruction encodings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59644 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-19 17:19:35 +00:00
Dan Gohman
c99da1348d Don't set neverHasSideEffects on x86's divide instructions, since 
they trap on divide-by-zero, and this side effect is otherwise
unmodeled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59551 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-18 21:29:14 +00:00
Dan Gohman
cbad42cfd1 Add more const qualifiers. This fixes build breakage from r59540. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-18 19:49:32 +00:00