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34985 Commits

Author SHA1 Message Date
Chris Lattner 93b76e0c60 Finish up expr codegen. 
llvm-svn: 43238
 2007-10-23 04:51:30 +00:00
Chris Lattner 61b4ec70aa several improvements suggested by Dan, thanks! 
llvm-svn: 43237
 2007-10-23 04:27:44 +00:00
Evan Cheng 1f2dd35898 Fix memcpy lowering when addresses are 4-byte aligned but size is not multiple of 4. 
llvm-svn: 43234
 2007-10-22 22:11:27 +00:00
Dan Gohman d09f1c40a2 The #include <iterator> isn't needed in this header. 
llvm-svn: 43232
 2007-10-22 20:44:10 +00:00
Dan Gohman e0c3d9f338 Strength reduction improvements. 
- Avoid attempting stride-reuse in the case that there are users that
   aren't addresses. In that case, there will be places where the
   multiplications won't be folded away, so it's better to try to
   strength-reduce them.

 - Several SSE intrinsics have operands that strength-reduction can
   treat as addresses. The previous item makes this more visible, as
   any non-address use of an IV can inhibit stride-reuse.

 - Make ValidStride aware of whether there's likely to be a base
   register in the address computation. This prevents it from thinking
   that things like stride 9 are valid on x86 when the base register is
   already occupied.

Also, XFAIL the 2007-08-10-LEA16Use32.ll test; the new logic to avoid
stride-reuse elimintes the LEA in the loop, so the test is no longer
testing what it was intended to test.

llvm-svn: 43231
 2007-10-22 20:40:42 +00:00
Dan Gohman bf474959a3 Fix the folding of multiplication into addresses on x86, which was broken 
by the recent {U,S}MUL_LOHI changes.

llvm-svn: 43230
 2007-10-22 20:22:24 +00:00
Evan Cheng bdbed66333 Use ptr type in the immediate field of a BxA instruction so we don't end up selecting 32-bit call instruction for ppc64. 
llvm-svn: 43228
 2007-10-22 19:46:19 +00:00
Evan Cheng 5163a8f53e Add missing paratheses. 
llvm-svn: 43227
 2007-10-22 19:42:28 +00:00
Chris Lattner fee916334a add a 'don't use me' marker. 
llvm-svn: 43226
 2007-10-22 19:41:46 +00:00
Duncan Sands 941db4da0a Support for expanding extending loads of integers with 
funky bit-widths.

llvm-svn: 43225
 2007-10-22 19:00:05 +00:00
Dan Gohman a37eaf2bf9 Move the SCEV object factors from being static members of the individual 
SCEV subclasses to being non-static member functions of the ScalarEvolution
class.

llvm-svn: 43224
 2007-10-22 18:31:58 +00:00
Duncan Sands 8fc995069b Fix up the logic for result expanding the various extension 
operations so they work right for integers with funky
bit-widths.  For example, consider extending i48 to i64
on a 32 bit machine.  The i64 result is expanded to 2 x i32.
We know that the i48 operand will be promoted to i64, then
also expanded to 2 x i32.  If we had the expanded promoted
operand to hand, then expanding the result would be trivial.
Unfortunately at this stage we can only get hold of the
promoted operand.  So instead we kind of hand-expand, doing
explicit shifting and truncating to get the top and bottom
halves of the i64 operand into 2 x i32, which are then used
to expand the result.  This is harmless, because when the
promoted operand is finally expanded all this bit fiddling
turns into trivial operations which are eliminated either
by the expansion code itself or the DAG combiner.

llvm-svn: 43223
 2007-10-22 18:26:21 +00:00
Chris Lattner ce2c3a456f fit in 80 cols :) 
llvm-svn: 43222
 2007-10-22 16:44:31 +00:00
Chris Lattner 560762d118 start of chapter 3 
llvm-svn: 43221
 2007-10-22 07:01:42 +00:00
Owen Anderson c2b2fc0a26 Fix a few typos I noticed. 
llvm-svn: 43220
 2007-10-22 06:48:28 +00:00
Owen Anderson 3295cfde98 Add downloadable code samples. 
llvm-svn: 43219
 2007-10-22 06:35:07 +00:00
Chris Lattner 3a48708c91 Check in part 2: parser and ast. 
llvm-svn: 43218
 2007-10-22 06:34:15 +00:00
Owen Anderson bbed04336c Fix some code to make it actually work. 
llvm-svn: 43217
 2007-10-22 06:29:31 +00:00
Bill Wendling 8830ffed4c Put correct link in example 
llvm-svn: 43216
 2007-10-22 05:10:05 +00:00
Chris Lattner 5e0f459da6 add part 1, review appreciated. 
llvm-svn: 43215
 2007-10-22 04:32:37 +00:00
Chris Lattner 5e63999d71 add an outline for "part 2". 
llvm-svn: 43214
 2007-10-22 03:19:07 +00:00
Chris Lattner c14c8cd1a7 rename tutorial 1 -> JITTutorial1, make unimplemented links not be dead links. 
llvm-svn: 43213
 2007-10-22 03:12:24 +00:00
Evan Cheng c92446af1f Fix an unfolding bug. 
llvm-svn: 43212
 2007-10-22 03:03:20 +00:00
Evan Cheng 8557603781 - Only perform the unfolding optimization when the folding in question is modref. 
- Remove a bogus assertion.

llvm-svn: 43211
 2007-10-22 03:01:44 +00:00
Chris Lattner fd6f3257b8 add a mechanism for the JIT to invoke a function to lazily create functions as they are referenced. 
llvm-svn: 43210
 2007-10-22 02:50:12 +00:00
Chris Lattner bf5e958ba0 llvm-gcc3 is dead, along with it __main. 
llvm-svn: 43209
 2007-10-22 02:39:47 +00:00
Anton Korobeynikov 7499a3b092 Reg2Mem cleanup and optimizations: 
- enable phi instructions demotion to stack
 - create alloca instructions in the entry block

llvm-svn: 43208
 2007-10-21 23:05:16 +00:00
Chris Lattner edaf0b4651 LoadLibraryPermanently doesn't throw. 
llvm-svn: 43207
 2007-10-21 22:58:11 +00:00
Chris Lattner b5163bb9f0 Add a convenience method for creating EE's. 
llvm-svn: 43206
 2007-10-21 22:57:11 +00:00
Dale Johannesen 8ee70112ea Allow for copysign having f80 second argument. 
Fixes 5550319.

llvm-svn: 43205
 2007-10-21 01:07:44 +00:00
Chris Lattner 36f06c80e6 Add promote operand support for [su]int_to_fp. 
llvm-svn: 43204
 2007-10-20 22:57:56 +00:00
Owen Anderson 18be874e67 Some improvements based on feedback from Anders. 
llvm-svn: 43203
 2007-10-20 06:12:33 +00:00
Owen Anderson 9f2be01f86 Fix some weird indenting in code. 
llvm-svn: 43202
 2007-10-20 05:41:39 +00:00
Owen Anderson f747ab10fb Use getOrInsertFunction() in tutorial 1. This makes for shorter, simpler, and better example code. 
llvm-svn: 43201
 2007-10-20 05:40:47 +00:00
Owen Anderson b207ff2c18 Add the beginnings of an LLVM tutorial. If anyone has suggestions, comments, 
or would like to contribute, let me know!

llvm-svn: 43200
 2007-10-20 05:23:06 +00:00
Chris Lattner 2ba4b148f3 Add result promotion of FP_TO_*INT, fixing CodeGen/X86/trunc-to-bool.ll 
with the new legalizer.

llvm-svn: 43199
 2007-10-20 04:32:38 +00:00
Chris Lattner 1c87f0c620 simplify some code. 
llvm-svn: 43198
 2007-10-20 04:09:48 +00:00
Chris Lattner 2bcac640b7 Implement promote and expand for operands of memcpy and friends. 
This fixes CodeGen/X86/mem*.ll.

llvm-svn: 43197
 2007-10-20 04:07:07 +00:00
Evan Cheng f12967124c Added missing curly braces which renders the if clause useless in debug build. 
llvm-svn: 43196
 2007-10-20 04:01:47 +00:00
Dale Johannesen 771188cf60 Fix a few places vector operations were not getting 
the operand's type from the right place.

llvm-svn: 43195
 2007-10-20 00:07:52 +00:00
Evan Cheng 45e096c77e Resolve unfold tables ambiguity. 
llvm-svn: 43194
 2007-10-19 23:50:58 +00:00
Evan Cheng f52a6fc50c New test case. 
llvm-svn: 43193
 2007-10-19 22:05:00 +00:00
Evan Cheng 35ff79370b Local spiller optimization: 
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.

llvm-svn: 43192
 2007-10-19 21:23:22 +00:00
Bill Wendling ac5c93040f Don't branch fold inline asm statements. 
llvm-svn: 43191
 2007-10-19 21:09:55 +00:00
Duncan Sands a87c9e4b75 Add support for a few more nodes. 
llvm-svn: 43190
 2007-10-19 20:29:48 +00:00
Dale Johannesen 6802d0c96f Redo "last ppc long double fix" as Chris wants. 
llvm-svn: 43189
 2007-10-19 20:29:00 +00:00
Bill Wendling b5bc897864 Removed "-arch i386" by popular demand... 
llvm-svn: 43186
 2007-10-19 18:49:16 +00:00
Bill Wendling 5f1a253a3f Now with RUN line! 
llvm-svn: 43185
 2007-10-19 18:40:53 +00:00
Bill Wendling 89151b1f0a Remove the Foundation.h file because not everyone has that. 
llvm-svn: 43184
 2007-10-19 18:36:04 +00:00
Devang Patel c0ced49a14 This test now passes. 
llvm-svn: 43183
 2007-10-19 17:11:01 +00:00