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136 Commits

Author SHA1 Message Date
Chris Lattner
920c0aa9c2 Pass i64 values correctly split in reg/mem to fastcc calls. 
This fixes fourinarow with -enable-x86-fastcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22022 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 12:03:10 +00:00
Chris Lattner
239738a162 Use target-specific nodes for calls. This allows the fastcc code to not have 
to do ugly hackery to avoid emitting code like this:

   call foo
   mov vreg, EAX
   adjcallstackup ...

If foo is a fastcc call and if vreg gets spilled, we might end up with this:

   call foo
   mov [ESP+offset], EAX     ;; Offset doesn't consider the 12!
   sub ESP, 12

Which is bad.  The previous hacky code to deal with this was A) gross B) not
good enough.  In particular, it could miss cases and emit the bad code above.
Now we always emit this:

   call foo
   adjcallstackup ...
   mov vreg, EAX

directly.

This makes fastcc with callees poping the stack work much better.  Next
stop (finally!) really is tail calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22021 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 08:48:15 +00:00
Chris Lattner
67649dfc32 use a target-specific node and custom expander to lower long->FP to FILD64m. 
This should fix some missing symbols problems on BSD and improve performance
of programs that use that operation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22012 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 06:52:07 +00:00
Chris Lattner
10d2645710 Make sure the start of the arg area and the end (after the RA is pushed) 
is always 8-byte aligned for fastcc


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21995 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 23:49:10 +00:00
Chris Lattner
653f7230ad fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21991 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 22:46:57 +00:00
Chris Lattner
06cebb456a Fix the problems with callee popped argument lists 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21988 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 22:13:49 +00:00
Chris Lattner
ca96c8217d Don't emit SAR X, 0 in the case of sdiv Y, 2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21986 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 21:50:27 +00:00
Chris Lattner
a96e577f53 Fix UnitTests/2005-05-13-SDivTwo.c 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21985 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 21:48:20 +00:00
Chris Lattner
3648c67eb2 switch to having the callee pop stack operands for fastcc. This is currently buggy 
do not use


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21984 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 21:44:04 +00:00
Chris Lattner
2e7714ad2b Build TAILCALL nodes in LowerCallTo, treat them like normal calls everywhere. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21976 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 20:29:13 +00:00
Chris Lattner
adf6a965a3 Add an isTailCall flag to LowerCallTo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21958 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 18:50:42 +00:00
Chris Lattner
63602fb868 Do not CopyFromReg physregs for live-in values. Instead, create a vreg for 
each live in, and copy the regs from the vregs.  As the very first thing we
do in the function, insert copies from the pregs to the vregs.  This fixes
problems where the token chain of CopyFromReg was not enough to allow reordering
of the copyfromreg nodes and other unchained nodes (e.g. div, which clobbers
eax on intel).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21932 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 07:38:09 +00:00
Chris Lattner
16cd04d26c rename the ADJCALLSTACKDOWN/ADJCALLSTACKUP nodes to be CALLSEQ_START/BEGIN. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21915 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 23:24:06 +00:00
Chris Lattner
c6f4181923 Add a new -enable-x86-fastcc option that enables passing the first 
two integer values in registers for the fastcc calling conv.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21912 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 23:06:28 +00:00
Chris Lattner
c57f682113 Pass in Calling Convention to use into LowerCallTo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21899 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 19:56:45 +00:00
Chris Lattner
c610d4267f X86 has more than just 32-bit registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21857 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:00:34 +00:00
Chris Lattner
6415bb4c29 Convert feature of the simple isel over for the pattern isel to use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21840 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 03:53:18 +00:00
Jeff Cohen
19bb2283e6 Silence some VC++ warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21838 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 02:22:38 +00:00
Chris Lattner
966cdfb600 Implement READPORT/WRITEPORT, implementing the last X86 regression tests 
that were failing with the pattern selector.  Note that the support that
existed in the simple selector was clearly broken in several ways though
(which has also been fixed).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21831 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 21:17:38 +00:00
Chris Lattner
4e6ce5f9c7 legalize readio/writeio into load/stores, fixing CodeGen/X86/io.llx with 
the pattern isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21828 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:37:29 +00:00
Chris Lattner
a0dbf181e0 restore some non-dead code I removed last night breaking double casts to 
uint


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21821 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 18:37:02 +00:00
Chris Lattner
a80d2bd89c Wrap long lines, remove dead code that is now handled by legalize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21811 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 05:40:26 +00:00
Chris Lattner
2afa1910d4 Fix FP -> bool casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21810 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 05:33:18 +00:00
Chris Lattner
e3e0f2765a Fix X86/2005-05-08-FPStackifierPHI.ll: ugly gross hack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21801 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 03:36:39 +00:00
Andrew Lenharth
b5884d3116 fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21693 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-04 19:25:37 +00:00
Andrew Lenharth
691ef2ba06 Implement count leading zeros (ctlz), count trailing zeros (cttz), and count 
population (ctpop).  Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.

More coming soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21676 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-03 17:19:30 +00:00
Chris Lattner
c5dcb53bea Add support for FSIN/FCOS when unsafe math ops are enabled. Patch contributed by 
Morten Ofstad!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21632 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-30 04:25:35 +00:00
Chris Lattner
2c56e8a23e Add support for FSQRT node, patch contributed by Morten Ofstad 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21610 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-28 22:07:18 +00:00
Andrew Lenharth
2d86ea21dd Implement Value* tracking for loads and stores in the selection DAG. This enables one to use alias analysis in the backends. 
(TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*.  Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21599 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-27 20:10:01 +00:00
Misha Brukman
0e0a7a45d3 * Remove trailing whitespace 
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21426 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 23:38:14 +00:00
Chris Lattner
75f354bd7a Handle (store &GV -> mem) as a store immediate. This often occurs for 
printf format strings and other stuff.  Instead of generating this:

        movl $l1__2E_str_1, %eax
        movl %eax, (%esp)

we now emit:

        movl $l1__2E_str_1, (%esp)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21406 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 19:03:24 +00:00
Chris Lattner
5bf2686a1b Fix some mysteriously missing {}'s which cause the miscompilation of 
Olden/mst, Ptrdist/bc, Obsequi, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21274 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-13 03:29:53 +00:00
Chris Lattner
91302a10ae Z_E_I is gone 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21267 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-13 02:39:05 +00:00
Chris Lattner
4c52f0ec8c Use live out sets for return values instead of imp_defs, which is cleaner and faster. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21181 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-09 15:23:56 +00:00
Chris Lattner
da4d4694a8 This target does not support/want ISD::BRCONDTWOWAY 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21164 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-09 03:22:37 +00:00
Chris Lattner
6659bd7592 X86 zero extends setcc results 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21146 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-07 19:41:46 +00:00
Chris Lattner
8db0af1c8d Add (untested) support for MULHS and MULHU. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21107 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-06 04:21:07 +00:00
Chris Lattner
b7edaa1d08 add support for FABS and FNEG 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21015 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-02 05:30:17 +00:00
Chris Lattner
43fdea070c This target doesn't support fabs/fneg yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21010 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-02 05:03:24 +00:00
Chris Lattner
b38a7495da Add support for 64-bit shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21005 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-02 04:01:14 +00:00
Chris Lattner
7ce7eff54c Add support for ISD::UNDEF to the X86 be 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20990 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-01 22:46:45 +00:00
Chris Lattner
71df3f8cab don't depend on the cfg being set up yet 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20936 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-30 01:10:00 +00:00
Nate Begeman
8e21e71b24 Change interface to LowerCallTo to take a boolean isVarArg argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20842 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-26 01:29:23 +00:00
Nate Begeman
85fdeb233e Remove comments that are now meaningless from the pattern ISels, at Chris's 
request.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20804 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-24 04:39:54 +00:00
Chris Lattner
7805fa4acc Don't emit two comparisons when comparing a FP value against zero! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20651 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-17 16:29:26 +00:00
Chris Lattner
e4d5c441e0 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-15 04:54:21 +00:00
Chris Lattner
572dd08204 Silence some uninit variable warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20284 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-23 05:57:21 +00:00
Chris Lattner
3576c84baf We can fold promoted and non-promoted loads into divs also! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19835 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 20:35:10 +00:00
Chris Lattner
44129b5b68 Fold promoted loads into binary ops for FP, allowing us to generate m32 forms 
of FP ops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19834 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 20:03:11 +00:00
Chris Lattner
0a07883694 Silence a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19798 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 23:20:06 +00:00