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Author SHA1 Message Date
Dan Gohman
5b994215c8 Add an assertion to catch SUnits reallocations. And add a doxygen 
comment for the ScheduleDAGSDNodes class.

llvm-svn: 61341
 2008-12-22 21:06:20 +00:00
Dan Gohman
cfc84d4332 Clarify a comment. 
llvm-svn: 61338
 2008-12-22 19:44:39 +00:00
Mikhail Glushenkov
2cd5897920 Use ignore & grep instead of XFAIL. 
llvm-svn: 61307
 2008-12-21 07:47:49 +00:00
Nick Lewycky
8fd2389593 Turn strcmp into memcmp, such as strcmp(P, "x") --> memcmp(P, "x", 2). 
llvm-svn: 61297
 2008-12-21 00:19:21 +00:00
Dan Gohman
c9f244842c 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.

llvm-svn: 61281
 2008-12-20 17:19:40 +00:00
Dan Gohman
a8303269cf Reword the comment for ConstantInt's getLimitedValue. 
llvm-svn: 61280
 2008-12-20 17:06:39 +00:00
Nick Lewycky
dd2222ab27 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.

llvm-svn: 61279
 2008-12-20 16:48:00 +00:00
Dan Gohman
6124fd2975 LiveInterval::removeKills and isKill don't need 'this' and 
can be static member functions.

llvm-svn: 61278
 2008-12-20 16:44:40 +00:00
Dan Gohman
ab5072f624 Use SmallVector's pop_back_val. 
llvm-svn: 61277
 2008-12-20 16:42:33 +00:00
Dan Gohman
8c5bea15ca Use the correct Preds and Succs lists in setHeightDirty() 
and setDepthDirty(), respectively. This fixes PR3241.

llvm-svn: 61276
 2008-12-20 16:34:57 +00:00
Bill Wendling
3632d60482 More precise XFAIL. 
llvm-svn: 61265
 2008-12-19 22:28:23 +00:00
Bill Wendling
1bbcac82ce Un-XFAIL this test because it's passing and John doesn't seem interested in un-XFAILing it. 
llvm-svn: 61264
 2008-12-19 22:25:01 +00:00
Dan Gohman
e75b2ce6e2 Use ~0u instead of -1u as the special value, to hopefully avoid 
warnings on compilers that warn about such things.

llvm-svn: 61263
 2008-12-19 22:23:43 +00:00
Evan Cheng
da55c4ffb7 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.

llvm-svn: 61259
 2008-12-19 20:58:01 +00:00
John Criswell
b7e13addf7 The fields for the stoppoint debug intrinsic have not changed, so update the 
version number assertions.

llvm-svn: 61257
 2008-12-19 19:56:36 +00:00
Bill Wendling
8f79cd1f1b This test works again for Darwin because a patch was reverted. 
llvm-svn: 61254
 2008-12-19 19:08:13 +00:00
Gordon Henriksen
9b8b72fe0a Add dyn_cast_or_null bindings for some additional classes missed in r61252. 
llvm-svn: 61253
 2008-12-19 18:51:17 +00:00
Gordon Henriksen
1f4a555efc C bindings for dyn_cast_or_null. 
This operation can be used to build dyn_cast, isa, and cast.

llvm-svn: 61252
 2008-12-19 18:39:45 +00:00
Chris Lattner
7819d9c8be Add support for writing LLVM IR to a specified BitstreamWriter. 
Patch by Lukasz Janyst!

llvm-svn: 61251
 2008-12-19 18:37:59 +00:00
Dan Gohman
22b7b328a4 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.

llvm-svn: 61250
 2008-12-19 18:25:21 +00:00
Dan Gohman
84db870cc3 Use dyn_cast intead of isa + cast in the generated DAGISel code. This 
reduces the amount of code slightly when assertions are enabled.

llvm-svn: 61249
 2008-12-19 18:13:39 +00:00
Evan Cheng
17b53ef5b0 - 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.

llvm-svn: 61248
 2008-12-19 18:03:11 +00:00
Chris Lattner
27c3b1df00 Fix some release-assert warnings 
llvm-svn: 61244
 2008-12-19 17:03:38 +00:00
Rafael Espindola
7593f0004f 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.

llvm-svn: 61242
 2008-12-19 10:55:56 +00:00
Nick Lewycky
4f2d81176d Update the .cvs files for nocapture. 
llvm-svn: 61241
 2008-12-19 09:41:54 +00:00
Nick Lewycky
b8719a653f Commit missed files from nocapture change. 
llvm-svn: 61240
 2008-12-19 09:38:31 +00:00
Nick Lewycky
8f96b51785 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.

llvm-svn: 61239
 2008-12-19 06:39:12 +00:00
Bill Wendling
d4a3c71eb1 Perform this loop only when the -debug flag is specified. 
llvm-svn: 61238
 2008-12-19 02:09:57 +00:00
Dan Gohman
3991753a76 Initialize the ImplicitDefed member, to avoid getting stale 
data from a previous block.

llvm-svn: 61237
 2008-12-19 00:46:20 +00:00
Dan Gohman
1e66a47f73 Fix RegScavenger::forward() to work on basic blocks containing exactly 
one instruction.

llvm-svn: 61236
 2008-12-19 00:45:13 +00:00
Dan Gohman
40ff87ab97 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.

llvm-svn: 61234
 2008-12-19 00:34:32 +00:00
Mon P Wang
4e9022582d Fix test to account for generating some vector code for mul v2i64 instead 
of incorrectly generating pmuldq

llvm-svn: 61228
 2008-12-18 23:42:37 +00:00
Bill Wendling
4ca9e94f91 Didn't mean to commit this. 
llvm-svn: 61222
 2008-12-18 22:19:50 +00:00
Dan Gohman
42b2f38113 Teach LowerSubregs to preserve kill/dead information when lowering 
subreg instructions.

llvm-svn: 61220
 2008-12-18 22:14:08 +00:00
Bill Wendling
5ec9cb2217 Re-XFAIL this test until debug stuff settles down. 
llvm-svn: 61219
 2008-12-18 22:13:31 +00:00
Dan Gohman
ca2ab1f2c8 Make LowerSubregs' debug output for EXTRACT_SUBREG consistent with 
that of INSERT_SUBREG and SUBREG_TO_REG.

llvm-svn: 61218
 2008-12-18 22:11:34 +00:00
Dan Gohman
7000e62d3a Fix a copy+pasto in an assertion message. 
llvm-svn: 61217
 2008-12-18 22:07:25 +00:00
Dan Gohman
34e47d552b Fix indentation level. 
llvm-svn: 61216
 2008-12-18 22:06:01 +00:00
Dan Gohman
1c74326cea When emitting instructions that define EFLAGS and the EFLAGS value isn't 
used, mark the defs as dead.

llvm-svn: 61215
 2008-12-18 22:03:42 +00:00
Dan Gohman
54790143b2 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.

llvm-svn: 61214
 2008-12-18 22:01:52 +00:00
Dan Gohman
47de8c174c Print subreg information in MachineInstr::dump. 
llvm-svn: 61213
 2008-12-18 21:51:27 +00:00
Mon P Wang
9f8945c5b9 Fixed x86 code generation of multiple for v2i64. It was incorrect for SSE4.1. 
llvm-svn: 61211
 2008-12-18 21:42:19 +00:00
Mon P Wang
5b74ab1f1e Added some basic test cases for r61209 
llvm-svn: 61210
 2008-12-18 20:05:58 +00:00
Mon P Wang
84ad2a383d Added support for vector widening. 
llvm-svn: 61209
 2008-12-18 20:03:17 +00:00
Evan Cheng
d3d1efc584 Remove dead comments. 
llvm-svn: 61201
 2008-12-18 09:01:18 +00:00
Nick Lewycky
c6e4019d57 Oops! Left out a line. 
Simplifying the sdiv might allow further simplifications for our users.

llvm-svn: 61196
 2008-12-18 06:42:28 +00:00
Nick Lewycky
ab50d88e6a Make all the vector elements positive in an srem of constant vector. 
llvm-svn: 61195
 2008-12-18 06:31:11 +00:00
Chris Lattner
6ecf1b2bb1 Fix PR2929 by making bugpoint/code extract propagate the nothrow 
bit from the original function to the cloned one.

llvm-svn: 61194
 2008-12-18 05:52:56 +00:00
Mikhail Glushenkov
964b643cf8 Fix typo in error message. 
llvm-svn: 61191
 2008-12-18 04:06:58 +00:00
Nick Lewycky
4a36d896bf Recommit this grammar fix that was backed out along with nocapture. 
llvm-svn: 61189
 2008-12-18 02:15:05 +00:00