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25 Commits

Author SHA1 Message Date
Chris Lattner
16700b9beb Change the arg lowering code to use copyfromreg from vregs associated 
with incoming arguments instead of the pregs themselves.  This fixes
the scheduler from causing problems by moving a copyfromreg for an argument
to after a select_cc node (now it can, and bad things won't happen).

llvm-svn: 23334
 2005-09-13 19:33:40 +00:00
Chris Lattner
766369cf45 Remove some dead vectors 
llvm-svn: 23329
 2005-09-13 18:47:49 +00:00
Chris Lattner
00e9278551 PowerPC cannot truncstore i1 natively 
llvm-svn: 23304
 2005-09-10 00:21:06 +00:00
Nate Begeman
718cae4eba Implement i64<->fp using the fctidz/fcfid instructions on PowerPC when we 
are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts,
such as the PowerPC 970.

This speeds up 189.lucas from 81.99 to 32.64 seconds.

llvm-svn: 23250
 2005-09-06 22:03:27 +00:00
Chris Lattner
813a73e8e9 Decouple fsqrt from gpul optimizations, implementing fsqrt.ll. 
Remove the -enable-gpopt option which is subsumed by feature flags.

llvm-svn: 23218
 2005-09-02 18:33:05 +00:00
Chris Lattner
6f9e01aa94 Restore this patch now that the latent bug has been fixed 
llvm-svn: 23209
 2005-09-02 01:24:55 +00:00
Chris Lattner
a58ee78b78 Revert the previous patch which causes a mysterious regression in toast. 
llvm-svn: 23207
 2005-09-02 00:47:05 +00:00
Chris Lattner
983190ce4c Implement small-arguments.ll:test3 by teaching the DAG optimizer that 
the results of calls to functions returning small values are properly
sign/zero extended.

llvm-svn: 23198
 2005-09-01 23:44:32 +00:00
Chris Lattner
914a0dbba1 Move FCTIWZ handling out of the instruction selectors and into legalization, 
getting them out of the business of making stack slots.

llvm-svn: 23180
 2005-08-31 21:09:52 +00:00
Chris Lattner
173c3fb3e5 Move SHL,SHR i64 -> legalizer 
llvm-svn: 23178
 2005-08-31 20:23:54 +00:00
Chris Lattner
353d5c167f lower sra_parts on the dag, implementing it for the dag isel, and exposing 
the ops to dag optimization.

llvm-svn: 23176
 2005-08-31 19:09:57 +00:00
Nate Begeman
c28c33f5a4 Enable generation of AssertSext and AssertZext in the PPC backend. 
llvm-svn: 23168
 2005-08-31 01:58:39 +00:00
Chris Lattner
a31670b930 Fix a bug in my patch for legalizing to fsel. It cannot handle seteq/setne, 
which I failed to include when I moved the code over.  This fixes
MallocBench/gs.

llvm-svn: 23140
 2005-08-30 00:45:18 +00:00
Chris Lattner
14f50b0df9 Fix some really strange indentation that xcode likes to use. 
no xcode, this is not right:

   if (!foo) break;
     X;

llvm-svn: 23138
 2005-08-30 00:19:00 +00:00
Chris Lattner
f470259b50 implement SELECT_CC fully for the DAG->DAG isel! 
llvm-svn: 23101
 2005-08-26 21:23:58 +00:00
Chris Lattner
04b88ca768 Make fsel emission work with both the pattern and dag-dag selectors, by 
giving it a non-instruction opcode.  The dag->dag selector used to not
select the operands of the fsel, because it thought that whole tree was
already selected.

llvm-svn: 23091
 2005-08-26 20:25:03 +00:00
Chris Lattner
007e1e07e3 implement the other half of the select_cc -> fsel lowering, which handles 
when the RHS of the comparison is 0.0.  Turn this on by default.

llvm-svn: 23083
 2005-08-26 17:36:52 +00:00
Chris Lattner
dae9a4899f add initial support for converting select_cc -> fsel in the legalizer 
instead of in the backend.  This currently handles fsel cases with registers,
but doesn't have the 0.0 and -0.0 optimization enabled yet.

Once this is finished, special hack for fp immediates can go away.

llvm-svn: 23075
 2005-08-26 00:52:45 +00:00
Nate Begeman
0f60221f2e Remove option to make SetCC illegal on PowerPC after long discussion with 
Chris.  This will be accomplished through correctly modeling CR's and
subregs.

llvm-svn: 23056
 2005-08-25 20:01:10 +00:00
Nate Begeman
a8ec868347 Ack, typo 
llvm-svn: 22981
 2005-08-23 05:45:10 +00:00
Nate Begeman
0ac8bb2fe1 Add an option to make SetCC illegal as a beta option 
llvm-svn: 22979
 2005-08-23 05:42:36 +00:00
Jim Laskey
cdde9cec23 Make UINT_TO_FP and SINT_TO_FP use generic expansion. 
llvm-svn: 22815
 2005-08-17 00:40:22 +00:00
Chris Lattner
9d651a0e3c updates for changes in nodes 
llvm-svn: 22808
 2005-08-16 21:58:15 +00:00
Nate Begeman
f6b6378f23 Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nasty 
fixme from the PowerPC backend.  Emit slightly better code for legalizing
select_cc.

llvm-svn: 22805
 2005-08-16 19:49:35 +00:00
Chris Lattner
a4c5954c52 Pull the LLVM -> DAG lowering code out of the pattern selector so that it 
can be shared with the DAG->DAG selector.

llvm-svn: 22799
 2005-08-16 17:14:42 +00:00