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26713 Commits

Author SHA1 Message Date
Owen Anderson
d1a2413f88 I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter. 
llvm-svn: 62678
 2009-01-21 08:18:03 +00:00
Sanjiv Gupta
37fdb5ca11 Implement LowerOperationWrapper for legalizer. 
Also a few signed comparison fixes.

llvm-svn: 62665
 2009-01-21 05:44:05 +00:00
Scott Michel
c80e71ac35 CellSPU: 
- Ensure that (operation) legalization emits proper FDIV libcall when needed.
- Fix various bugs encountered during llvm-spu-gcc build, along with various
  cleanups.
- Start supporting double precision comparisons for remaining libgcc2 build.
  Discovered interesting DAGCombiner feature, which is currently solved via
  custom lowering (64-bit constants are not legal on CellSPU, but DAGCombiner
  insists on inserting one anyway.)
- Update README.

llvm-svn: 62664
 2009-01-21 04:58:48 +00:00
Sanjiv Gupta
074553c4fb Allow targets to legalize operations (with illegal operands) that produces multiple values. For example, a load with an illegal operand (a load produces two values, a value and chain). 
llvm-svn: 62663
 2009-01-21 04:48:39 +00:00
Evan Cheng
0ed6a9d7e0 Favors generating "not" over "xor -1". For example. 
unsigned test(unsigned a) {
  return ~a;
}
llvm used to generate:
movl    $4294967295, %eax
xorl    4(%esp), %eax

Now it generates:
movl      4(%esp), %eax
notl      %eax

It's 3 bytes shorter.

llvm-svn: 62661
 2009-01-21 02:09:05 +00:00
Dale Johannesen
6854f86296 Make special cases (0 inf nan) work for frem. 
Besides APFloat, this involved removing code
from two places that thought they knew the
result of frem(0., x) but were wrong.

llvm-svn: 62645
 2009-01-21 00:35:19 +00:00
Owen Anderson
10ad717dc8 Be more aggressive about renumbering vregs after splitting them. 
llvm-svn: 62639
 2009-01-21 00:13:28 +00:00
Devang Patel
c129e798c7 Encode member accessibility. 
llvm-svn: 62638
 2009-01-21 00:08:04 +00:00
Devang Patel
bb4362571a Appropriately mark fowrad decls. 
llvm-svn: 62625
 2009-01-20 22:27:02 +00:00
Evan Cheng
5bea79c062 Fix PR3243: a LiveVariables bug. When HandlePhysRegKill is checking whether the last reference is also the last def (i.e. dead def), it should also check if last reference is the current machine instruction being processed. This can happen when it is processing a physical register use and setting the current machine instruction as sub-register's last ref. 
llvm-svn: 62617
 2009-01-20 21:25:12 +00:00
Duncan Sands
eb7ffc9654 Fix typo. Patch by Alexei Svitkine. 
llvm-svn: 62616
 2009-01-20 21:20:23 +00:00
Bill Wendling
cf901346da Use "SINT_TO_FP" instead of "UINT_TO_FP" when getting the exponent. This was 
causing the limited precision stuff to produce the wrong result for values in
the range [0, 1).

llvm-svn: 62615
 2009-01-20 21:17:57 +00:00
Devang Patel
4c79c8be26 Fix struct member's debug info. 
llvm-svn: 62610
 2009-01-20 21:02:02 +00:00
Devang Patel
ccc3162f69 Need only one set of debug info versions enum. 
llvm-svn: 62602
 2009-01-20 19:22:03 +00:00
Evan Cheng
b3c82db63d Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well. 
llvm-svn: 62600
 2009-01-20 19:12:24 +00:00
Devang Patel
10f2f03c68 Fix global variable's address in a DIE. 
llvm-svn: 62596
 2009-01-20 18:55:39 +00:00
Devang Patel
7f6ef3bdd6 Enable debug info for enums. 
llvm-svn: 62594
 2009-01-20 18:35:14 +00:00
Dale Johannesen
c9e6e85a38 Add an IEEE remainder function, which is not 
fully implemented yet and not used.  This is
mainly to clarify that APFloat::mod implements
C fmod, not remainder.

llvm-svn: 62593
 2009-01-20 18:35:05 +00:00
Chris Lattner
8ab719c566 improve compatibility with various versions of graphviz, patch by 
Patrick Boettcher!

llvm-svn: 62592
 2009-01-20 18:25:03 +00:00
Chris Lattner
391f04d56e Eliminate use of uint32_t to improve compatibility with cygwin 
llvm-svn: 62590
 2009-01-20 18:22:57 +00:00
Devang Patel
6bd9ebdef8 Enable debug info for composite types. 
llvm-svn: 62589
 2009-01-20 18:13:03 +00:00
Evan Cheng
58488a481f Refactor code. No functionality change. 
llvm-svn: 62573
 2009-01-20 06:44:16 +00:00
Bill Wendling
5685c90e04 Shift types need to match. 
llvm-svn: 62571
 2009-01-20 06:10:42 +00:00
Chris Lattner
6ade48fcaa another fix for PR3354 
llvm-svn: 62561
 2009-01-20 01:15:41 +00:00
Dan Gohman
7663e08915 Add a README entry noticed while investigating PR3216. 
llvm-svn: 62558
 2009-01-20 01:07:33 +00:00
Dan Gohman
ff4c4ab39f Fix a dagcombine to not generate loads of non-round integer types, 
as its comment says, even in the case where it will be generating
extending loads. This fixes PR3216.

llvm-svn: 62557
 2009-01-20 01:06:45 +00:00
Devang Patel
6a88f8849b Do not use DenseMap because the iterator is invalidated while constructing types. After all there was a reason why std::map was used initially! 
llvm-svn: 62555
 2009-01-20 00:58:55 +00:00
Nick Lewycky
6ef90b1a25 Make the Interpreter use libffi if it's available. Patch from Alexei Svitkine! 
This requires a rebuild of 'configure' itself. I will be committing that next, but
built with the wrong version of autoconf. Somebody who has the right one, please update
it.

As a side-note, because of the way autoconf works, all built tools will link against
libffi, not just lli. If you know how to fix this, please let me know ...

llvm-svn: 62553
 2009-01-20 00:51:40 +00:00
Evan Cheng
5ee5ba12be Make linear scan's trivial coalescer slightly more aggressive. 
llvm-svn: 62547
 2009-01-20 00:16:18 +00:00
Bill Wendling
5281f4fb64 Doxygen-ify comments. 
llvm-svn: 62546
 2009-01-19 23:43:56 +00:00
Devang Patel
7c2157602d Verify debug info. 
llvm-svn: 62545
 2009-01-19 23:21:49 +00:00
Chris Lattner
e8fa6f2468 Fix a problem exposed by PR3354: simplifycfg was making a potentially 
trapping instruction be executed unconditionally.

llvm-svn: 62541
 2009-01-19 23:03:13 +00:00
Dan Gohman
02b5657666 Remove SDNode's virtual destructor. This makes it impossible for 
SDNode subclasses to keep state that requires non-trivial
destructors, however it was already effectively impossible,
since the destructor isn't actually ever called. There currently
aren't any SDNode subclasses affected by this, and in general
it's desireable to keep SDNode objects light-weight.

This eliminates the last virtual member function in the SDNode
class, so it eliminates the need for a vtable pointer, making
SDNode smaller.

llvm-svn: 62539
 2009-01-19 22:39:36 +00:00
Chris Lattner
45a7b5ce57 improve compatibility with cygwin, patch by Jay Foad! 
llvm-svn: 62535
 2009-01-19 22:00:18 +00:00
Chris Lattner
8c8234435a div/rem by zero and div/rem overflow are both undefined according to 
langref.  Constant fold them to undef instead of trying to preserve
the trap.  This fixes PR3354.

llvm-svn: 62534
 2009-01-19 21:55:26 +00:00
Dan Gohman
af4e583c93 Fix SelectionDAG::ReplaceAllUsesWith to behave correctly when 
uses are added to the From node while it is processing From's
use list, because of automatic local CSE. The fix is to avoid
visiting any new uses.

Fix a few places in the DAGCombiner that assumed that after
a RAUW call, the From node has no users and may be deleted.

This fixes PR3018.

llvm-svn: 62533
 2009-01-19 21:44:21 +00:00
Chris Lattner
b88febb5cd Fix PR3353, infinitely jump threading an infinite loop make from switches. 
llvm-svn: 62529
 2009-01-19 21:20:34 +00:00
Dale Johannesen
31f3cac06b compile-time fmod was done incorrectly. PR 3316. 
llvm-svn: 62528
 2009-01-19 21:17:05 +00:00
Devang Patel
50ac518b6c Verify Intrinsic::dbg_declare. 
llvm-svn: 62526
 2009-01-19 21:00:48 +00:00
Evan Cheng
06cfade044 DIVREM isel deficiency: If sign bit is known zero, zero out DX/EDX/RDX instead of sign extending the low part (in AX/EAX/RAX) into it. 
llvm-svn: 62519
 2009-01-19 19:06:11 +00:00
Evan Cheng
3c00875658 Fix 80 col violations. 
llvm-svn: 62518
 2009-01-19 18:57:29 +00:00
Evan Cheng
2f50b49f22 Handle ISD::DECLARE with PIC relocation model. 
llvm-svn: 62516
 2009-01-19 18:31:51 +00:00
Nick Lewycky
b98042a414 Fix typo, sentence fragment. 
llvm-svn: 62512
 2009-01-19 17:42:33 +00:00
Bill Wendling
bf83203ae6 Temporarily revert r62487. It's causing this error during a release bootstrap of 
llvm-gcc. Most likely, it's miscompiling one of the "gen*" programs:

/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/xgcc -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./prev-gcc/ -B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.6.0/bin/ -c -g -O2 -mdynamic-no-pic -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -mdynamic-no-pic -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/build -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -o build/gencondmd.o build/gencondmd.c
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: excess elements in struct initializer
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: warning: (near initialization for 'insn_conditions[4]')
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected '}' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:926: error: expected ',' or ';' before ')' token
../../llvm-gcc.src/gcc/config/i386/mmx.md:927: error: expected identifier or '(' before ',' token
../../llvm-gcc.src/gcc/config/i386/sse.md:3458: error: expected identifier or '(' before ',' token
...

llvm-svn: 62506
 2009-01-19 08:46:20 +00:00
Evan Cheng
a14fd26a8b Minor tweak to LowerUINT_TO_FP_i32. Bias (after scalar_to_vector) has two uses so we should make it the second source operand of ISD::OR so 2-address pass won't have to be smart about commuting. 
%reg1024<def> = MOVSDrm %reg0, 1, %reg0, <cp#0>, Mem:LD(8,8) [ConstantPool + 0]
%reg1025<def> = MOVSD2PDrr %reg1024
%reg1026<def> = MOVDI2PDIrm <fi#-1>, 1, %reg0, 0, Mem:LD(4,16) [FixedStack-1 + 0]
%reg1027<def> = ORPSrr %reg1025<kill>, %reg1026<kill>
%reg1028<def> = MOVPD2SDrr %reg1027<kill>
%reg1029<def> = SUBSDrr %reg1028<kill>, %reg1024<kill>
%reg1030<def> = CVTSD2SSrr %reg1029<kill>
MOVSSmr <fi#0>, 1, %reg0, 0, %reg1030<kill>, Mem:ST(4,4) [FixedStack0 + 0]
%reg1031<def> = LD_Fp32m80 <fi#0>, 1, %reg0, 0, Mem:LD(4,16) [FixedStack0 + 0]
RET %reg1031<kill>, %ST0<imp-use,kill>

The reason 2-addr pass isn't smart enough to commute the ORPSrr is because it can't look pass the MOVSD2PDrr instruction.

llvm-svn: 62505
 2009-01-19 08:19:57 +00:00
Evan Cheng
53e83a2eb9 Now not UINT_TO_FP is legal (it's marked custom), dag combiner won't 
optimize it to a SINT_TO_FP when the sign bit is known zero. X86 isel should perform the optimization itself.

llvm-svn: 62504
 2009-01-19 08:08:22 +00:00
Chris Lattner
bb76cc9447 Fix PR3016, a bug which can occur do to an invalid assumption: 
we assumed a CFG structure that would be valid when all code in 
the function is reachable, but not all code is necessarily 
reachable.  Do a simple, but horrible, CFG walk to check for this
case.

llvm-svn: 62487
 2009-01-19 02:46:28 +00:00
Chris Lattner
af6f58bbf4 reduce indentation by using 'continue', no functionality change. 
llvm-svn: 62477
 2009-01-19 02:07:32 +00:00
Chris Lattner
c03b442e54 Fix some problems in SpeculativelyExecuteBB. Basically, 
because of dead code, a phi could use the speculated instruction
that was not in "BB2".  Make this check explicit and tighten up 
some other corners.  This fixes PR3292.  No testcase becauase this
depends entirely on visitation order of blocks and requires a 
sequence of 8 passes to repro.

llvm-svn: 62476
 2009-01-19 00:36:37 +00:00
Chris Lattner
ead19aaccb Make this a bit more explicit about which cases need the 
check.  No functionality change.

llvm-svn: 62474
 2009-01-18 23:22:07 +00:00