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Author SHA1 Message Date
Dan Gohman
983bbbaf36 Add an assertion to catch SUnits reallocations. And add a doxygen 
comment for the ScheduleDAGSDNodes class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61341 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-22 21:06:20 +00:00
Dan Gohman
b5544940c1 Clarify a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61338 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-22 19:44:39 +00:00
Mikhail Glushenkov
a01ce0091a Use ignore & grep instead of XFAIL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61307 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-21 07:47:49 +00:00
Nick Lewycky
13a09e298c Turn strcmp into memcmp, such as strcmp(P, "x") --> memcmp(P, "x", 2). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61297 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-21 00:19:21 +00:00
Dan Gohman
b12b1a27f5 Fix fast-isel to not emit invalid assembly when presented with a 
constant shift count that doesn't fit in the shift instruction's
immediate field. This fixes PR3242.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61281 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 17:19:40 +00:00
Dan Gohman
edf22b97d0 Reword the comment for ConstantInt's getLimitedValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61280 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 17:06:39 +00:00
Nick Lewycky
9dce873c1a Remove redundant test for vector-nature. Scan the vector first to see whether 
our optz'n will apply to it, then build the replacement vector only if needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61279 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:48:00 +00:00
Dan Gohman
fce4028718 LiveInterval::removeKills and isKill don't need 'this' and 
can be static member functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61278 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:44:40 +00:00
Dan Gohman
e19c6362d2 Use SmallVector's pop_back_val. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:42:33 +00:00
Dan Gohman
f89e6e6577 Use the correct Preds and Succs lists in setHeightDirty() 
and setDepthDirty(), respectively. This fixes PR3241.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61276 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-20 16:34:57 +00:00
Bill Wendling
b8fd41985f More precise XFAIL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61265 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 22:28:23 +00:00
Bill Wendling
c6acb579f9 Un-XFAIL this test because it's passing and John doesn't seem interested in un-XFAILing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61264 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 22:25:01 +00:00
Dan Gohman
6c3643c41b Use ~0u instead of -1u as the special value, to hopefully avoid 
warnings on compilers that warn about such things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61263 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 22:23:43 +00:00
Evan Cheng
5379f412bc Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this. 
172     %ECX<def> = MOV32rr %reg1039<kill>
180     INLINEASM <es:subl $5,$1
        sbbl $3,$0>, 10, %EAX<def>, 14, %ECX<earlyclobber,def>, 9, %EAX<kill>,
36, <fi#0>, 1, %reg0, 0, 9, %ECX<kill>, 36, <fi#1>, 1, %reg0, 0
188     %EAX<def> = MOV32rr %EAX<kill>
196     %ECX<def> = MOV32rr %ECX<kill>
204     %ECX<def> = MOV32rr %ECX<kill>
212     %EAX<def> = MOV32rr %EAX<kill>
220     %EAX<def> = MOV32rr %EAX
228     %reg1039<def> = MOV32rr %ECX<kill>

The early clobber operand ties ECX input to the ECX def.

The live interval of ECX is represented as this:
%reg20,inf = [46,47:1)[174,230:0)  0@174-(230) 1@46-(47)

The right way to represent this is something like
%reg20,inf = [46,47:2)[174,182:1)[181:230:0)  0@174-(182) 1@181-230 @2@46-(47)

Of course that won't work since that means overlapping live ranges defined by two val#.

The workaround for now is to add a bit to val# which says the val# is redefined by a early clobber def somewhere. This prevents the move at 228 from being optimized away by SimpleRegisterCoalescing::AdjustCopiesBackFrom.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61259 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 20:58:01 +00:00
John Criswell
de8c611c08 The fields for the stoppoint debug intrinsic have not changed, so update the 
version number assertions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61257 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 19:56:36 +00:00
Bill Wendling
94920c123a This test works again for Darwin because a patch was reverted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61254 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 19:08:13 +00:00
Gordon Henriksen
95ca7314fd Add dyn_cast_or_null bindings for some additional classes missed in r61252. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61253 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:51:17 +00:00
Gordon Henriksen
2a9c671a51 C bindings for dyn_cast_or_null. 
This operation can be used to build dyn_cast, isa, and cast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61252 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:39:45 +00:00
Chris Lattner
38e7721455 Add support for writing LLVM IR to a specified BitstreamWriter. 
Patch by Lukasz Janyst!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61251 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:37:59 +00:00
Dan Gohman
018a34c576 Move the patterns which have i8 immediates before the patterns 
that have i32 immediates so that they get selected first. This
currently only matters in the JIT, as assemblers will
automatically use the smallest encoding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61250 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:25:21 +00:00
Dan Gohman
0b53d98c29 Use dyn_cast intead of isa + cast in the generated DAGISel code. This 
reduces the amount of code slightly when assertions are enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61249 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:13:39 +00:00
Evan Cheng
ab63152871 - CodeGenPrepare does not split loop back edges but it only knows about back edges of single block loops. It now does a DFS walk to find loop back edges. 
- Use SplitBlockPredecessors to factor out common predecessors of the critical edge destination. This is disabled for now due to some regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61248 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 18:03:11 +00:00
Chris Lattner
a33649e98c Fix some release-assert warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61244 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 17:03:38 +00:00
Rafael Espindola
2f6fea90a5 Fix bug 3202. 
The EH_frame and .eh symbols are now private, except for darwin9 and earlier.
The patch also fixes the definition of PrivateGlobalPrefix on pcc linux.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61242 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 10:55:56 +00:00
Nick Lewycky
d802be39d7 Update the .cvs files for nocapture. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61241 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 09:41:54 +00:00
Nick Lewycky
73ddd4f00d Commit missed files from nocapture change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61240 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 09:38:31 +00:00
Nick Lewycky
f23d0d392a Resubmit support for the 'nocapture' attribute. 
The problematic part of this patch is that we were out of attribute bits,
requiring some fancy bit hacking to make it fit (by shrinking alignment)
without breaking existing users or the file format.

This change will require users to rebuild llvm-gcc to match llvm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61239 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 06:39:12 +00:00
Bill Wendling
bebbded574 Perform this loop only when the -debug flag is specified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61238 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 02:09:57 +00:00
Dan Gohman
1385758215 Initialize the ImplicitDefed member, to avoid getting stale 
data from a previous block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61237 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 00:46:20 +00:00
Dan Gohman
5b200d8a13 Fix RegScavenger::forward() to work on basic blocks containing exactly 
one instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61236 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 00:45:13 +00:00
Dan Gohman
9755faab60 Delete the RegScavenging constructor that takes a MachineBasicBlock 
argument. Nothing was using it, and it set the MBB member without
calling enterBasicBlock, which was problematic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61234 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-19 00:34:32 +00:00
Mon P Wang
7538454f9f Fix test to account for generating some vector code for mul v2i64 instead 
of incorrectly generating pmuldq


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61228 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 23:42:37 +00:00
Bill Wendling
e533f4e343 Didn't mean to commit this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61222 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:19:50 +00:00
Dan Gohman
a5b2fee757 Teach LowerSubregs to preserve kill/dead information when lowering 
subreg instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61220 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:14:08 +00:00
Bill Wendling
82c19ae10a Re-XFAIL this test until debug stuff settles down. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61219 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:13:31 +00:00
Dan Gohman
98c206921a Make LowerSubregs' debug output for EXTRACT_SUBREG consistent with 
that of INSERT_SUBREG and SUBREG_TO_REG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61218 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:11:34 +00:00
Dan Gohman
f04865f234 Fix a copy+pasto in an assertion message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61217 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:07:25 +00:00
Dan Gohman
07af765049 Fix indentation level. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61216 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:06:01 +00:00
Dan Gohman
bfd23c9961 When emitting instructions that define EFLAGS and the EFLAGS value isn't 
used, mark the defs as dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61215 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:03:42 +00:00
Dan Gohman
34d6ad73e1 When setting up the frame pointer, add it as a live-in register to all 
non-entry blocks, so that it doesn't appear use-before-def anywhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61214 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 22:01:52 +00:00
Dan Gohman
2ccc839669 Print subreg information in MachineInstr::dump. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61213 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 21:51:27 +00:00
Mon P Wang
af9b952627 Fixed x86 code generation of multiple for v2i64. It was incorrect for SSE4.1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61211 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 21:42:19 +00:00
Mon P Wang
1d045486ca Added some basic test cases for r61209 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61210 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 20:05:58 +00:00
Mon P Wang
87c8a8f304 Added support for vector widening. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61209 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 20:03:17 +00:00
Evan Cheng
5c9f34b7a0 Remove dead comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61201 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 09:01:18 +00:00
Nick Lewycky
19c2892677 Oops! Left out a line. 
Simplifying the sdiv might allow further simplifications for our users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61196 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 06:42:28 +00:00
Nick Lewycky
2a8f6597a3 Make all the vector elements positive in an srem of constant vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61195 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 06:31:11 +00:00
Chris Lattner
31535f1f04 Fix PR2929 by making bugpoint/code extract propagate the nothrow 
bit from the original function to the cloned one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61194 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 05:52:56 +00:00
Mikhail Glushenkov
65ee1e6ff4 Fix typo in error message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61191 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 04:06:58 +00:00
Nick Lewycky
78eb804068 Recommit this grammar fix that was backed out along with nocapture. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61189 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-18 02:15:05 +00:00