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Author SHA1 Message Date
Evan Cheng
4ebe9b79fa Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. 
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1028                                                                                                                                            
%reg1030<def> = ADD8rr %reg1028<kill>, %reg1029<kill>, %EFLAGS<imp-def,dead>                                                                                                         

In this case, it might not be possible to coalesce the second MOV8rr                                                                                                                 
instruction if the first one is coalesced. So it would be profitable to                                                                                                              
commute it:                                                                                                                                                                          
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1029                                                                                                                                            
%reg1030<def> = ADD8rr %reg1029<kill>, %reg1028<kill>, %EFLAGS<imp-def,dead>

llvm-svn: 62954
 2009-01-25 03:53:59 +00:00
Dan Gohman
14a8caaef9 Add a PR comment to this test. 
llvm-svn: 62921
 2009-01-24 17:32:54 +00:00
Torok Edwin
2a7e7066b3 testcase for PR3381. 
Also it was an empty struct, not a void after all.

llvm-svn: 62920
 2009-01-24 17:16:04 +00:00
Chris Lattner
d386e82ec9 Make InstCombineStoreToCast handle aggregates more aggressively, 
handling the case in Transforms/InstCombine/cast-store-gep.ll, which
is a heavily reduced testcase from Clang on x86-64.

llvm-svn: 62904
 2009-01-24 01:00:13 +00:00
Devang Patel
a19a3f5f32 Fix test case. Use valid file name and directory in global variable's debug info entry. 
llvm-svn: 62883
 2009-01-23 21:54:18 +00:00
Chris Lattner
b36503c31b fix two more cases where we could let the NLPDI cache get unsorted. 
With this, sqlite3 now passes.

llvm-svn: 62839
 2009-01-23 07:12:16 +00:00
Evan Cheng
4a5296ec5f Update test to reflect command line option name change. 
llvm-svn: 62836
 2009-01-23 05:45:31 +00:00
Dan Gohman
a6e5948fce Don't create ISD::FNEG nodes after legalize if they aren't legal. 
Simplify x+0 to x in unsafe-fp-math mode. This avoids a bunch of
redundant work in many cases, because in unsafe-fp-math mode,
ISD::FADD with a constant is considered free to negate, so the
DAGCombiner often negates x+0 to -0-x thinking it's free, when
in reality the end result is -x, which is more expensive than x.

Also, combine x*0 to 0.

This fixes PR3374.

llvm-svn: 62789
 2009-01-22 21:58:43 +00:00
Devang Patel
386023e3f0 Do not use buggy llvm-gcc to generate testcases. 
llvm-svn: 62770
 2009-01-22 18:28:11 +00:00
Duncan Sands
f549eb9f12 Remove no-longer relevant comment. Pointed out 
by Gabor.

llvm-svn: 62765
 2009-01-22 15:37:29 +00:00
Duncan Sands
af90c712dd This passes on linux. 
llvm-svn: 62764
 2009-01-22 15:07:15 +00:00
Chris Lattner
d3b233ba51 fix a testcase. 
llvm-svn: 62758
 2009-01-22 07:08:58 +00:00
Chris Lattner
ddc8e78d54 Fix PR3358, a really nasty bug where recursive phi translated 
analyses could be run without the caches properly sorted.  This
can fix all sorts of weirdness.  Many thanks to Bill for coming
up with the 'issorted' verification idea.

llvm-svn: 62757
 2009-01-22 07:04:01 +00:00
Bill Wendling
58a51ca0f9 Now with RUN line. 
llvm-svn: 62716
 2009-01-21 21:28:03 +00:00
Bill Wendling
1eb2ec148b Run this through -simplifycfg and -mem2reg to test only what we need to test. 
llvm-svn: 62714
 2009-01-21 21:02:27 +00:00
Dale Johannesen
a5699a1e8b Do not use host floating point types when emitting 
ASCII IR; loading and storing these can change the
bits of NaNs on some hosts.  Remove or add warnings
at a few other places using host floating point;
this is a bad thing to do in general.

llvm-svn: 62712
 2009-01-21 20:32:55 +00:00
Dan Gohman
d021a20409 Simplify ReduceLoadWidth's logic: it doesn't need several different 
special cases after producing the new reduced-width load, because the
new load already has the needed adjustments built into it. This fixes
several bugs due to the special cases, including PR3317.

llvm-svn: 62692
 2009-01-21 15:17:51 +00:00
Dan Gohman
704f0d5879 Fix a recent regression. ClrOpcode is not set for i8; for i8, if 
we want to clear %ah to zero before a division, just use a
zero-extending mov to %al. This fixes PR3366.

llvm-svn: 62691
 2009-01-21 14:50:16 +00:00
Mikhail Glushenkov
9153777db7 Allow hooks with arguments. 
llvm-svn: 62685
 2009-01-21 13:04:00 +00:00
Duncan Sands
8ff90a156b This was causing invalid memory accesses when 
generating debug info in the compiler.

llvm-svn: 62684
 2009-01-21 11:51:17 +00:00
Duncan Sands
07b1beeba8 Let's try to have our cake and eat it to: move 
this test into FrontendC to ensure that llvm-gcc
is available; assemble using "llvm-gcc -xassembler"
rather than "as".

llvm-svn: 62683
 2009-01-21 11:37:31 +00:00
Duncan Sands
e60dd41a39 Don't rely on grep -w working. 
llvm-svn: 62682
 2009-01-21 09:41:42 +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
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
ba0f5e174f Disable on x86_64 until I figure out what's wrong. 
llvm-svn: 62660
 2009-01-21 02:08:30 +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
bb4362571a Appropriately mark fowrad decls. 
llvm-svn: 62625
 2009-01-20 22:27:02 +00:00
Devang Patel
fd1fff7178 Need compile unit to find location. 
llvm-svn: 62624
 2009-01-20 22:26:11 +00:00
Dale Johannesen
1c12d1b665 Calls to fmod, it turns out, are constant-folded by 
invoking the host fmod, not by lowering to frem and
constant-folding that.  Fix this so it tests what I
want to test.

llvm-svn: 62622
 2009-01-20 21:58:13 +00:00
Chris Lattner
4f4bbecafb Don't bother running the assembler, we don't know that it will be configured 
for whatever llc defaults to.  This fixes PR3363

llvm-svn: 62619
 2009-01-20 21:41:53 +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
Evan Cheng
0151af3a61 Add test case for PR3154. 
llvm-svn: 62604
 2009-01-20 19:29:54 +00:00
Duncan Sands
7af474d2da Check that the "don't barf on k8" fix is not 
accidentally reverted again.

llvm-svn: 62587
 2009-01-20 18:08:39 +00:00
Bill Wendling
5bd5863cdb Temporarily XFAIL until this can be looked at. r62557 is what caused it to start failing. 
llvm-svn: 62578
 2009-01-20 10:28:39 +00:00
Bill Wendling
68171bde8e Testcase for limited precision stuff. 
llvm-svn: 62572
 2009-01-20 06:23:59 +00:00
Chris Lattner
6ade48fcaa another fix for PR3354 
llvm-svn: 62561
 2009-01-20 01:15:41 +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
Evan Cheng
5ee5ba12be Make linear scan's trivial coalescer slightly more aggressive. 
llvm-svn: 62547
 2009-01-20 00:16:18 +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
Dale Johannesen
5508ead868 Move & restructure test per review. 
llvm-svn: 62538
 2009-01-19 22:33:12 +00:00
Chris Lattner
7b4c55fb34 convert this to an unfoldable potentially trapping constant expr. 
llvm-svn: 62536
 2009-01-19 22:12:33 +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
Nick Lewycky
7c5381a70c Port this test from dejagnu to unit testing. 
The way this worked before was to test APInt by running
"lli -force-interpreter=true" knowing the lli uses APInt under the hood to
store its values. Now, we test APInt directly.

llvm-svn: 62514
 2009-01-19 18:08:33 +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
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