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Author SHA1 Message Date
Dan Gohman
1bb346f9f1 When both x/y and x%y are needed (x and y both scalar integer), compute 
both results with a single div or idiv instruction. This uses new X86ISD
nodes for DIV and IDIV which are introduced during the legalize phase
so that the SelectionDAG's CSE can automatically eliminate redundant
computations.

llvm-svn: 42308
 2007-09-25 18:23:27 +00:00
Devang Patel
ab58843813 Do not reserve DOM check for GetElementPtrInst. 
llvm-svn: 42306
 2007-09-25 17:55:50 +00:00
Dale Johannesen
fe773726a9 Some tests for APFloat conversions. 
llvm-svn: 42303
 2007-09-25 17:50:55 +00:00
Evan Cheng
dab211c87b Forgot to check in the changes. Fix test case so it doesn't break with any scheduling changes. 
llvm-svn: 42302
 2007-09-25 17:47:38 +00:00
Devang Patel
f35e6c1181 doh.. 
llvm-svn: 42300
 2007-09-25 17:43:08 +00:00
Devang Patel
de9d1c3654 Add transformation to update loop interation space. Now, 
for (i=A; i<N; i++) {
  if (i < X && i > Y)
    do_something();
}

is transformed into

U=min(N,X); L=max(A,Y);
for (i=L;i<U;i++)
  do_somethihg();                            

llvm-svn: 42299
 2007-09-25 17:31:19 +00:00
Dale Johannesen
ee2f3359f4 Fix long double<->shorter FP type conversions 
of zero, infinity, and NaNs.

llvm-svn: 42298
 2007-09-25 17:25:00 +00:00
Dan Gohman
8385890394 Move the setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand) and 
the check to see if the assembler supports .loc from X86TargetLowering
into the superclass TargetLowering.

llvm-svn: 42297
 2007-09-25 15:10:49 +00:00
Duncan Sands
1118f5f67f Fix spelling. 
llvm-svn: 42296
 2007-09-25 13:53:22 +00:00
Duncan Sands
130f4e01fa Add missing end-of-file newlines. 
llvm-svn: 42294
 2007-09-25 07:10:01 +00:00
Owen Anderson
87f3667bcf Fill in the sections about my contributions. 
llvm-svn: 42286
 2007-09-25 02:10:58 +00:00
Evan Cheng
36b3babfde Added support for new condition code modeling scheme (i.e. physical register dependency). These are a bunch of instructions that are duplicated so the x86 backend can support both the old and new schemes at the same time. They will be deleted after 
all the kinks are worked out.

llvm-svn: 42285
 2007-09-25 01:57:46 +00:00
Evan Cheng
6d8f155a63 Added major new capabilities to scheduler (only BURR for now) to support physical register dependency. The BURR scheduler can now backtrace and duplicate instructions in order to avoid "expensive / impossible to copy" values (e.g. status flag EFLAGS for x86) from being clobbered. 
llvm-svn: 42284
 2007-09-25 01:54:36 +00:00
Evan Cheng
6bfaf13dd9 New temporary option -new-cc-modeling-scheme to test the new cc modeling scheme. 
llvm-svn: 42283
 2007-09-25 01:50:04 +00:00
Evan Cheng
0a3651a70d Rename keyword "modify" -> "implicit". 
llvm-svn: 42282
 2007-09-25 01:48:59 +00:00
Dale Johannesen
5ea6a9bc3a When mixing SSE and x87 codegen, it's possible to 
have situations where an SSE instruction turns into
multiple blocks, with the live range of an x87
register crossing them.  To do this correctly make
sure we examine all blocks when inserting
FP_REG_KILL.  PR 1697.  (This was exposed by my
fix for PR 1681, but the same thing could happen
mixing x87 long double with SSE.)

llvm-svn: 42281
 2007-09-24 22:52:39 +00:00
Bill Wendling
9390abcf16 Don't execute dump unless NDEBUG isn't defined. 
llvm-svn: 42280
 2007-09-24 22:43:48 +00:00
Daniel Berlin
f6cb4c3d65 Comment fixups 
llvm-svn: 42279
 2007-09-24 22:20:45 +00:00
Dan Gohman
96d5f979bc Add support on x86 for having Legalize lower ISD::LOCATION to ISD::DEBUG_LOC 
instead of ISD::LABEL with a manual .debug_line entry when the assembler
supports .file and .loc directives.

llvm-svn: 42278
 2007-09-24 21:54:14 +00:00
Dan Gohman
db6903c748 Don't emit .debug_line header data if there aren't any lines to put in it, 
such as will happen when .loc directives are used.

llvm-svn: 42277
 2007-09-24 21:43:52 +00:00
Dan Gohman
a5a089d5f9 Move the Asm->EOL() call for EmitDebugARanges outside the #ifdef for 
consistency with the other currently empty sections.

llvm-svn: 42276
 2007-09-24 21:36:21 +00:00
Dan Gohman
7de5440570 Add support for emitting .file directives to set up file numbers for 
use with .loc directives.

llvm-svn: 42275
 2007-09-24 21:32:18 +00:00
Dan Gohman
b642a1ddf8 Merge hasDotLoc and hasDotFile into hasDotLocAndDotFile since .loc and .file 
aren't really usable without each other. 

llvm-svn: 42274
 2007-09-24 21:09:53 +00:00
Dale Johannesen
4208f4103d float->int conversion rounds toward 0. Duh. 
Fixes PR1698.

llvm-svn: 42273
 2007-09-24 21:06:09 +00:00
Dan Gohman
d005faa65d Add a routine for emitting .file directives, for setting up 
file numbers to use with .loc directives.

llvm-svn: 42272
 2007-09-24 20:58:13 +00:00
Bruno Cardoso Lopes
23468a24c9 Added "LoadEffective" pattern to handle stack locations. 
Fixed some comments

llvm-svn: 42271
 2007-09-24 20:15:11 +00:00
Devang Patel
65f8d0c2d7 Do not promote null values because it may be unsafe to do so. 
llvm-svn: 42270
 2007-09-24 20:02:42 +00:00
Daniel Berlin
f900d1295f Implement offline variable substitution in order to reduce memory 
and time usage.
Fixup operator == to make this work, and add a resize method to DenseMap
so we can resize our hashtable once we know how big it should be.

llvm-svn: 42269
 2007-09-24 19:45:49 +00:00
Dan Gohman
a264777dc1 Fix the syntax for the .loc directive in preparation for using it. 
llvm-svn: 42268
 2007-09-24 19:25:06 +00:00
Daniel Berlin
2b33136f50 Add section on bit containers. 
(Not the most well written stuff in the universe :P)

llvm-svn: 42267
 2007-09-24 17:52:25 +00:00
Tanya Lattner
52ae97fea6 XFAIL for llvm-gcc4.0 
llvm-svn: 42266
 2007-09-24 17:14:53 +00:00
Dan Gohman
32b1df2aa3 The code that used the StartLabelId label was removed, so remove the 
code that creates the label too.

llvm-svn: 42265
 2007-09-24 16:44:26 +00:00
Dan Gohman
dd675a5064 Use the correct result value type instead of using getValueType(0) 
in ExpandEXTRACT_VECTOR_ELT and SplitVectorOp. This fixes an abort
in the included testcase.

llvm-svn: 42264
 2007-09-24 15:54:53 +00:00
Dan Gohman
39313e0fa3 Fix a typo in a comment. 
llvm-svn: 42263
 2007-09-24 15:50:11 +00:00
Dan Gohman
ed361aa114 explicit keywords. 
llvm-svn: 42262
 2007-09-24 15:48:49 +00:00
Dan Gohman
c852b7450b Remove an unnecessary static_cast. 
llvm-svn: 42261
 2007-09-24 15:46:02 +00:00
Chris Lattner
594d3aa066 claim that "st" is from the 80-bit register file. This causes x87-using inline 
asm to die with:

ScheduleDAG.cpp:269: failed assertion `false && "Couldn't find the register class"'

instead of:
failed assertion `RegMap->getRegClass(VReg) == RC && "Register class of operand and regclass of use don't agree!"'

yay.

llvm-svn: 42259
 2007-09-24 05:27:37 +00:00
Chris Lattner
0fc154af3d When emitting .set directives, make sure the EH and Debug labels can't conflict. 
llvm-svn: 42257
 2007-09-24 03:35:37 +00:00
Owen Anderson
02c6c6bba7 Fix typo. 
llvm-svn: 42256
 2007-09-24 02:33:22 +00:00
Owen Anderson
a0a11ee8b9 Merge significant portions of the DomTree and PostDomTree implementations. 
The two remaining unmerged parts are DFSPass, and the Calculate().

llvm-svn: 42255
 2007-09-24 02:29:29 +00:00
Dale Johannesen
f7e8b1262b Just use APFloat for const / const. Fixes 
-1. / -0.

llvm-svn: 42254
 2007-09-24 00:32:45 +00:00
Owen Anderson
bc099e74d8 Factor the calculation details for PostDomTree out of PostDominators.cpp and 
into a separate header file.

Next step: merging PostDominatorCalculation.h with DominatorCalculation.h.

llvm-svn: 42251
 2007-09-23 22:21:00 +00:00
Owen Anderson
677db80624 Move DFSPass back down into DominatorTree. I need to figure out what the difference is between it 
and the PostDomTree version first.

llvm-svn: 42250
 2007-09-23 22:16:38 +00:00
Owen Anderson
e04633f0ff Fix header. 
llvm-svn: 42249
 2007-09-23 21:32:55 +00:00
Owen Anderson
de1937fcee Factor the dominator tree calculation details out into DominatorCalculation.h. This 
change is not useful in and of itself, but it lays the groundwork for combining
the dominator and postdominator implementations.

Also, factor a few methods that are common to DominatorTree and PostDominatorTree
into DominatorTreeBase.  Again, this will make merging the two calculation methods
simpler in the future.

llvm-svn: 42248
 2007-09-23 21:31:44 +00:00
Dale Johannesen
a928e8b8b2 Implementation of +sse -sse2 has changed; add 
-sse to preserve intent of this test.

llvm-svn: 42247
 2007-09-23 14:58:14 +00:00
Dale Johannesen
ea6ffa0b36 Fix PR 1681. When X86 target uses +sse -sse2, 
keep f32 in SSE registers and f64 in x87.  This
is effectively a new codegen mode.
Change addLegalFPImmediate to permit float and
double variants to do different things.
Adjust callers.

llvm-svn: 42246
 2007-09-23 14:52:20 +00:00
Gordon Henriksen
7b659bff9c Fix srcdir <> objdir builds with ocaml 2.10. Downrev versions don't care whether 
'dir' exists in 'ocamldep -I dir ...', but recent ones demand that it actually
exists.

llvm-svn: 42245
 2007-09-23 13:37:44 +00:00
Chris Lattner
cdb6479d76 fix syntax 
llvm-svn: 42242
 2007-09-22 23:41:15 +00:00
Gordon Henriksen
dfcd4b7fb0 Regenerate. 
llvm-svn: 42241
 2007-09-22 21:36:59 +00:00