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22494 Commits

Author SHA1 Message Date
Jeff Cohen e128d5f724 Improve X86 subtarget support for Windows and AMD. 
llvm-svn: 25747
 2006-01-28 18:09:06 +00:00
Chris Lattner d02b05473c Use the new "UpdateNodeOperands" method to simplify LegalizeDAG and make it 
faster.  This cuts about 120 lines of code out of the legalizer (mostly code
checking to see if operands have changed).

It also fixes an ugly performance issue, where the legalizer cloned the entire
graph after any change.  Now the "UpdateNodeOperands" method gives it a chance
to reuse nodes if the operands of a node change but not its opcode or valuetypes.

This speeds up instruction selection time on kimwitu++ by about 8.2% with a
release build.

llvm-svn: 25746
 2006-01-28 10:58:55 +00:00
Chris Lattner ccd2a20c4b silence a warning 
llvm-svn: 25745
 2006-01-28 10:34:47 +00:00
Chris Lattner 580b12ad34 add another method variant 
llvm-svn: 25744
 2006-01-28 10:09:25 +00:00
Chris Lattner 64f934f07f add another variant 
llvm-svn: 25743
 2006-01-28 10:08:58 +00:00
Chris Lattner f34156e8cb add some methods for updating nodes 
llvm-svn: 25742
 2006-01-28 09:32:45 +00:00
Chris Lattner 009c53f688 Add some methods 
llvm-svn: 25741
 2006-01-28 09:32:01 +00:00
Chris Lattner eb63751499 minor tweaks 
llvm-svn: 25740
 2006-01-28 08:31:04 +00:00
Chris Lattner 689bdcc9cf move a bunch of code, no other change. 
llvm-svn: 25739
 2006-01-28 08:25:58 +00:00
Chris Lattner fcfda5a174 remove a couple more now-extraneous legalizeop's 
llvm-svn: 25738
 2006-01-28 08:22:56 +00:00
Chris Lattner 364b89a784 fix a bug 
llvm-svn: 25737
 2006-01-28 07:42:08 +00:00
Chris Lattner 9dcce6da8e Several major changes: 
1. Pull out the expand cases for BSWAP and CT* into a separate function,
   reducing the size of LegalizeOp.
2. Fix a bug where expand(bswap i64) was wrong when i64 is legal.
3. Changed LegalizeOp/PromoteOp so that the legalizer never needs to be
   iterative.  It now operates in a single pass over the nodes.
4. Simplify a LOT of code, with a net reduction of ~280 lines.

llvm-svn: 25736
 2006-01-28 07:39:30 +00:00
Chris Lattner 30432e07f0 Fix a bug in my elimination of ISD::CALL this morning. PPC now has to 
provide the expansion for i64 calls itself

llvm-svn: 25735
 2006-01-28 07:33:03 +00:00
Chris Lattner dc8bbb6527 make this work on non-native hosts 
llvm-svn: 25734
 2006-01-28 06:05:41 +00:00
Chris Lattner 0c7b4666a3 add a note about how we should implement this FIXME from the legalizer: 
// FIXME: revisit this when we have some kind of mechanism by which targets
    // can decided legality of vector constants, of which there may be very
    // many.

llvm-svn: 25733
 2006-01-28 05:40:47 +00:00
Chris Lattner fd4a7f76a9 Eliminate the need for ExpandOp to set 'needsanotheriteration', as it already 
relegalizes the stuff it returns.

Add the ability to custom expand ADD/SUB, so that targets don't need to deal
with ADD_PARTS/SUB_PARTS if they don't want.

Fix some obscure potential bugs and simplify code.

llvm-svn: 25732
 2006-01-28 05:07:51 +00:00
Chris Lattner 10f677508f Instead of making callers of ExpandLibCall legalize the result, make 
ExpandLibCall do it itself.

llvm-svn: 25731
 2006-01-28 04:28:26 +00:00
Chris Lattner a593acfe66 Eliminate the need to do another iteration of the legalizer after inserting 
a libcall.

llvm-svn: 25730
 2006-01-28 04:23:12 +00:00
Chris Lattner b256104073 remove this method I just added, now is not the time. 
llvm-svn: 25729
 2006-01-28 03:43:33 +00:00
Chris Lattner 98ed05c81d remove method I just added 
llvm-svn: 25728
 2006-01-28 03:43:09 +00:00
Chris Lattner 43b867dd3b add a new callback 
llvm-svn: 25727
 2006-01-28 03:37:03 +00:00
Nate Begeman 595ec734fc Implement Promote for VAARG, and allow it to be custom promoted for people 
who don't want the default behavior (Alpha).

llvm-svn: 25726
 2006-01-28 03:14:31 +00:00
Nate Begeman 6c82262289 Add a couple more things to the readme. 
llvm-svn: 25724
 2006-01-28 01:22:10 +00:00
Nate Begeman af397cec0b Add a missing case to the dag combiner. 
llvm-svn: 25723
 2006-01-28 01:06:30 +00:00
Chris Lattner fb16a62fba Remove the ISD::CALL and ISD::TAILCALL nodes 
llvm-svn: 25721
 2006-01-28 00:18:58 +00:00
Chris Lattner b95594b2f0 The 'target-independent' ISD::CALL isn't. Nuke it, making way for Nate's 
future work.

llvm-svn: 25720
 2006-01-28 00:18:27 +00:00
Chris Lattner b292de6703 Remove some dead code 
llvm-svn: 25719
 2006-01-28 00:02:51 +00:00
Chris Lattner 2c00db82bd Switch to AlphaISD::CALL instead of ISD::CALL 
llvm-svn: 25718
 2006-01-27 23:39:00 +00:00
Chris Lattner f424a66524 Use PPCISD::CALL instead of ISD::CALL 
llvm-svn: 25717
 2006-01-27 23:34:02 +00:00
Chris Lattner a9382ca59e Use V8ISD::CALL instead of ISD::CALL 
llvm-svn: 25716
 2006-01-27 23:30:03 +00:00
Evan Cheng 18243826fd A bit of wisdom from Chris on the last entry. 
llvm-svn: 25715
 2006-01-27 22:54:32 +00:00
Evan Cheng 63045d221b AT&T assembly convention: registers are in lower case. 
llvm-svn: 25714
 2006-01-27 22:53:29 +00:00
Evan Cheng 6a92822173 Use Intel assembly syntax to look for ST 
llvm-svn: 25713
 2006-01-27 22:51:51 +00:00
Chris Lattner a502b93fae initialize member vars 
llvm-svn: 25712
 2006-01-27 22:38:36 +00:00
Chris Lattner dbfc299915 initialize all instance vars 
llvm-svn: 25711
 2006-01-27 22:37:09 +00:00
Chris Lattner 4d967a4cbb Make llvm.frame/returnaddr not crash on ppc 
llvm-svn: 25710
 2006-01-27 22:25:06 +00:00
Jeff Cohen e251e92c23 Teach tablegen to generate code that is VC++ warning-free. 
llvm-svn: 25709
 2006-01-27 22:22:28 +00:00
Evan Cheng e555a92c8d (store (op (load ...)), ...) 
If store's chain operand is load, then use load's chain operand instead. If
it isn't (likely a TokenFactor), then do not allow the folding.

llvm-svn: 25708
 2006-01-27 22:13:45 +00:00
Chris Lattner b3eb31f7f9 * Eliminate FAKE_SOURCES 
* Make runtimes and projects build with the new front-end by not relying on
  'llvm-gcc -c' to build a .bc file.  Instead, use llvm-gcc -S -emit-llvm,
  then an explicit invocation of gccas.  Also, don't use llvm-gcc to link
  .bc files together, use gccld directly.

llvm-svn: 25707
 2006-01-27 22:13:12 +00:00
Evan Cheng 9857d075b5 Added notes about a x86 isel deficiency. 
llvm-svn: 25706
 2006-01-27 22:11:01 +00:00
Chris Lattner 4c251f89b4 Remove out of date comment 
llvm-svn: 25705
 2006-01-27 22:06:50 +00:00
Chris Lattner a4575c7349 Remove the only use of FAKE_SOURCES 
llvm-svn: 25704
 2006-01-27 22:06:23 +00:00
Chris Lattner 35b707cfcc Remove FAKE_SOURCES 
llvm-svn: 25703
 2006-01-27 22:06:01 +00:00
Evan Cheng 1073ae07b0 Added a temporary option -enable-x86-sse to enable sse support. It is used by 
llc-beta.

llvm-svn: 25701
 2006-01-27 21:49:34 +00:00
Evan Cheng a814f0b31c Bye bye Pattern ISel, hello DAG ISel. 
llvm-svn: 25700
 2006-01-27 21:26:54 +00:00
Evan Cheng 822f629538 X86 dag isel is now (soon) the default. 
llvm-svn: 25699
 2006-01-27 21:15:22 +00:00
Evan Cheng 7ca86912b7 These are fp stack test cases. 
llvm-svn: 25698
 2006-01-27 21:14:23 +00:00
Evan Cheng a3b41703f0 XFAIL tailcall test cases until it's implemented. 
llvm-svn: 25697
 2006-01-27 21:13:27 +00:00
Nate Begeman 8c47c3a3b1 Remove TLI.LowerReturnTo, and just let targets custom lower ISD::RET for 
the same functionality.  This addresses another piece of bug 680.  Next,
on to fixing Alpha VAARG, which I broke last time.

llvm-svn: 25696
 2006-01-27 21:09:22 +00:00
Jim Laskey 0cda006a69 Using bit size of integers instead of ambiguous "long" et all. 
llvm-svn: 25694
 2006-01-27 20:31:25 +00:00