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5937 Commits

Author SHA1 Message Date
Anton Korobeynikov
1442f5c066 Add global variable to test for consistency 
llvm-svn: 57597
 2008-10-15 20:22:44 +00:00
Anton Korobeynikov
982947e183 This is not failing anymore 
llvm-svn: 57596
 2008-10-15 20:13:10 +00:00
Bill Wendling
8d26b9c07a Testcase for PR1638. 
llvm-svn: 57590
 2008-10-15 18:27:15 +00:00
Chris Lattner
9449f199b3 Fix the .ll grammar rules to allow any type before an 'i32', not just an 
integer type.  Invalid things like 'float 42' are now rejected by the
semantic analysis in the productions not the parser.  This fixes PR2733.

llvm-svn: 57560
 2008-10-15 06:16:45 +00:00
Evan Cheng
cb8b4e9dd4 - Add target lowering hooks that specify which setcc conditions are illegal, 
i.e. conditions that cannot be checked with a single instruction. For example,
SETONE and SETUEQ on x86.
- Teach legalizer to implement *illegal* setcc as a and / or of a number of
legal setcc nodes. For now, only implement FP conditions. e.g. SETONE is
implemented as SETO & SETNE, SETUEQ is SETUO | SETEQ.
- Move x86 target over.

llvm-svn: 57542
 2008-10-15 02:05:31 +00:00
Daniel Dunbar
e11e618cc6 Prevent assert when using '"' in names (via hexadecimal). 
Update LangRef to mention \xx quoting in names.

llvm-svn: 57538
 2008-10-14 23:51:43 +00:00
Evan Cheng
591baeed7c Combine (fcmp cc0 x, y) | (fcmp cc1 x, y) into a single fcmp when possible. 
llvm-svn: 57515
 2008-10-14 18:44:08 +00:00
Evan Cheng
778b47e6c0 - Somehow I forgot about one / une. 
- Renumber fcmp predicates to match their icmp counterparts.
- Try swapping operands to expose more optimization opportunities.

llvm-svn: 57513
 2008-10-14 18:13:38 +00:00
Evan Cheng
91528965e7 Optimize anding of two fcmp into a single fcmp if the operands are the same. e.g. uno && ueq -> ueq 
ord && olt -> olt
     ord && ueq -> oeq

llvm-svn: 57507
 2008-10-14 17:15:11 +00:00
Chris Lattner
5d6b61c4c8 new testcase for PR2797 
llvm-svn: 57481
 2008-10-14 06:56:04 +00:00
Dan Gohman
e08e0dcfcc When doing the very-late shift-and address-mode optimization, 
create a new DAG node to represent the new shift to keep the
DAG consistent, even though it'll almost always be folded into
the address.

If a user of the resulting address has multiple uses, the
nodes may get revisited by a later MatchAddress call, in which
case DAG inconsistencies do matter.

This fixes PR2849.

llvm-svn: 57465
 2008-10-13 20:52:04 +00:00
Duncan Sands
a119167d74 Don't barf on 32 bit platforms if llvm-gcc is 
not built with 64 bit support.  Since this test
passes without -m64 on x86-32-linux, just remove
the -m64.

llvm-svn: 57462
 2008-10-13 19:56:36 +00:00
Evan Cheng
de99d94c58 FIX PR2794. Make sure SIGN_EXTEND_INREG nodes introduced by LegalizeSetCCOperands are leglized. Patch by Richard Pennington. 
llvm-svn: 57460
 2008-10-13 18:46:18 +00:00
Evan Cheng
731f400eac Also update sub-register intervals after a trivial computation is rematt'ed for a copy instruction. PR2775. 
llvm-svn: 57458
 2008-10-13 18:35:52 +00:00
Evan Cheng
023b124109 Add a test case for _Complex passed as a FCA. 
llvm-svn: 57456
 2008-10-13 18:13:07 +00:00
Dale Johannesen
123ca42f2c Remove "long" variants so these will pass on a 64-bit host. 
llvm-svn: 57418
 2008-10-12 18:40:49 +00:00
Chris Lattner
7a61ef92f5 Fix PR2697 by rewriting the '(X / pos) op neg' logic. This also changes 
a couple other cases for clarity, but shouldn't affect correctness.

Patch by Eli Friedman!

llvm-svn: 57387
 2008-10-11 22:55:00 +00:00
Chris Lattner
7910d59d44 Change CALLSEQ_BEGIN and CALLSEQ_END to take TargetConstant's as 
parameters instead of raw Constants.  This prevents the constants from
being selected by the isel pass, fixing PR2735.

llvm-svn: 57385
 2008-10-11 22:08:30 +00:00
Devang Patel
255fee3bce Check loop exit predicate properly while eliminating one iteration loop. 
This patch fixes PR 2869

llvm-svn: 57369
 2008-10-10 22:02:57 +00:00
Anton Korobeynikov
72e9aa27f0 Add testcase for 'r' inline asm operand 
llvm-svn: 57361
 2008-10-10 20:28:59 +00:00
Anton Korobeynikov
3f74df506c This does not fail anymore 
llvm-svn: 57360
 2008-10-10 20:28:32 +00:00
Anton Korobeynikov
40b8d5fc4d Add sparc test for memory operand used in inline asm 
llvm-svn: 57348
 2008-10-10 10:15:33 +00:00
Anton Korobeynikov
1134867d55 This is not failing anymore 
llvm-svn: 57347
 2008-10-10 10:15:18 +00:00
Chris Lattner
284ae75537 get CodeGen/Alpha/mul128.ll to work. 
llvm-svn: 57318
 2008-10-09 04:50:56 +00:00
Dan Gohman
08e60cee90 Remove -disable-fast-isel. Use cl::boolOrDefault with -fast-isel 
instead.

So now: -fast-isel or -fast-isel=true enable fast-isel, and
-fast-isel=false disables it. Fast-isel is also on by default
with -fast, and off by default otherwise.

llvm-svn: 57270
 2008-10-07 23:00:56 +00:00
Dan Gohman
bc47391399 Add a testcase for i256 add. i256 isn't fully supported in 
codegen right now, but add and subtract work.

llvm-svn: 57260
 2008-10-07 20:39:12 +00:00
Andrew Lenharth
dccb47de69 128 mul test, xfailed 
llvm-svn: 57250
 2008-10-07 17:13:32 +00:00
Anders Carlsson
a9c42526f8 Certain patterns involving the "movss" instruction were marked as requiring SSE2, when in reality movss is an SSE1 instruction. 
llvm-svn: 57246
 2008-10-07 16:14:11 +00:00
Nuno Lopes
7127e22321 add support for running the test suite with valgrind. to run it just type 'make VG=1', as in clang 
beware of the 42000 leaks reported by valgrind in the Constant.cpp + Type.cpp files. it needs fixing IMHO

llvm-svn: 57245
 2008-10-07 14:48:14 +00:00
Andrew Lenharth
c00c2a0058 Expand arith on machines without carry flags 
llvm-svn: 57243
 2008-10-07 14:15:42 +00:00
Gabor Greif
ed536c45df fix filetype suffix 
llvm-svn: 57237
 2008-10-07 06:41:02 +00:00
Chris Lattner
75c684100c no need to write the output to the disk 
llvm-svn: 57232
 2008-10-07 04:06:55 +00:00
Andrew Lenharth
99c106c2a2 Add test case for ADDC ADDE expansion 
llvm-svn: 57228
 2008-10-07 02:30:13 +00:00
Devang Patel
378c8633e5 Fix typo, fix PR 2865. 
llvm-svn: 57221
 2008-10-06 23:22:54 +00:00
Dale Johannesen
40d00c0979 Be more precise about which conversions of NaNs 
are Inexact.  (These are not Inexact as defined
by IEEE754, but that seems like a reasonable way
to abstract what happens:  information is lost.)

llvm-svn: 57218
 2008-10-06 22:59:10 +00:00
Evan Cheng
88d76ffe8a Fix PR2850 and PR2863. Only generate movddup for 128-bit SSE vector shuffles. 
llvm-svn: 57210
 2008-10-06 21:13:08 +00:00
Devang Patel
ca66d093c0 Remove interfaces implemented by dead pass from the list of available passes. 
Patch By Matthijs Kooijman.

llvm-svn: 57202
 2008-10-06 20:36:36 +00:00
Evan Cheng
9b23fa5fb5 This is an objective-c test, not an objective-c++ one. 
llvm-svn: 57193
 2008-10-06 18:42:48 +00:00
Matthijs Kooijman
12cd5d041d Allow scalarrepl to treat an all-zero GEP just as bitcast. 
This includes not marking a GEP involving a vector as unsafe, but only when it
has all zero indices. This allows scalarrepl to work in a few more cases.

llvm-svn: 57177
 2008-10-06 16:23:31 +00:00
Duncan Sands
dcc1048912 Actually run Obj-C++ tests if llvm-gcc supports. 
Before there were two problems: (1) configure
turned "obj-c++" into "obj" in the langs line;
(2) the dejagnu library called it objc++ not
obj-c++.
Now the problem is that some of these tests don't
pass!

llvm-svn: 57167
 2008-10-06 10:31:21 +00:00
Chris Lattner
107e8f8b60 rewrite bswap matching to be more general, allowing arbitrary 
shifting and masking inside a bswap expr.  This allows it to handle
the cases from PR2842, which involve the intermediate 'or' 
expressions being shifted, not just the input value.

llvm-svn: 57095
 2008-10-05 02:13:19 +00:00
Duncan Sands
e22385630e Ignore loads from and stores to local memory (i.e. allocas) 
when deciding whether to mark a function readnone/readonly.
Since the pass is currently run before SROA, this may be
quite helpful.  Requested by Chris on IRC.

llvm-svn: 57050
 2008-10-04 13:24:24 +00:00
Nick Lewycky
53e751fcba Allow the construction of SCEVs with SCEVCouldNotCompute operands, by 
implementing folding. Fixes PR2857.

llvm-svn: 57049
 2008-10-04 11:19:07 +00:00
Anton Korobeynikov
4cc9051fbb Revert r56675 - it breaks unwinding runtime everywhere. 
llvm-svn: 57048
 2008-10-04 11:09:36 +00:00
Dan Gohman
638a8001c8 Fix a bug in the local allocator's liveness computation where it 
was setting kill flags on tied uses in two-address instructions.
The kill flags were causing the allocator to think it could
allocate the use and its tied def in different registers.

llvm-svn: 57039
 2008-10-04 00:31:14 +00:00
Devang Patel
55401473f9 Nick Lewycky's patch. 
While hosting instruction check PHI node.

llvm-svn: 57025
 2008-10-03 18:57:37 +00:00
Evan Cheng
bc226c3882 New test case. 
llvm-svn: 57023
 2008-10-03 18:12:59 +00:00
Dale Johannesen
dbd7b1bd33 Handle some 64-bit atomics on x86-32, some of the time. 
llvm-svn: 56963
 2008-10-02 18:53:47 +00:00
Dan Gohman
c48242640d Fix a think-o in isSafeToMove. This fixes it from thinking that 
volatile memory references are safe to move.

llvm-svn: 56948
 2008-10-02 15:04:30 +00:00
Dan Gohman
595edc380a Disable fast-isel for this test, as it doesn't emit the same 
number of instructions.

llvm-svn: 56940
 2008-10-01 23:48:35 +00:00
Devang Patel
d90556aed0 Attributes noinline alwaysinline are incompatible 
llvm-svn: 56939
 2008-10-01 23:41:25 +00:00
Devang Patel
a5cda569d3 Remove OptimizeForSize global. Use function attribute optsize. 
llvm-svn: 56937
 2008-10-01 23:18:38 +00:00
Dan Gohman
be88cf29b6 Split this test and move it into target-specific directories. 
This fixes failures on configurations that don't have one or the
other targets enabled.

llvm-svn: 56926
 2008-10-01 19:46:30 +00:00
Dan Gohman
5508abb3bf nounwind-ify this test. 
llvm-svn: 56918
 2008-10-01 15:07:14 +00:00
Dan Gohman
54356cf3ca Don't leave an output file in the test directory. 
llvm-svn: 56910
 2008-10-01 04:13:23 +00:00
Bill Wendling
c807050f44 Moved this option to the front-end. 
llvm-svn: 56901
 2008-10-01 01:02:18 +00:00
Dan Gohman
d456cc01eb Use explicit target-triples to unbreak this test on non-darwin systems. 
llvm-svn: 56896
 2008-10-01 00:25:38 +00:00
Bill Wendling
618d422cdd Just don't transform this memset into "bzero" if no-builtin is specified. 
llvm-svn: 56888
 2008-09-30 22:05:33 +00:00
Bill Wendling
86f6fdc7e3 - Initialize "--no-builtin" to "false". 
- Testcase for r56885.

llvm-svn: 56886
 2008-09-30 21:40:30 +00:00
Evan Cheng
1c8ff02eeb Re-apply 56835 along with header file changes. 
llvm-svn: 56848
 2008-09-30 15:44:16 +00:00
Duncan Sands
a2c8482495 Revert commit 56835 since it breaks the build. 
"If a re-materializable instruction has a register
operand, the spiller will change the register operand's
spill weight to HUGE_VAL to avoid it being spilled.
However, if the operand is already in the queue ready
to be spilled, avoid re-materializing it".

llvm-svn: 56837
 2008-09-30 10:00:30 +00:00
Evan Cheng
4eee17f4fb If a re-materializable instruction has a register operand, the spiller will change the register operand's spill weight to HUGE_VAL to avoid it being spilled. However, if the operand is already in the queue ready to be spilled, avoid re-materializing it. 
llvm-svn: 56835
 2008-09-30 06:36:58 +00:00
Nick Lewycky
9e918179c8 Fix misoptimization of: xor i1 (icmp eq (X, C1), icmp s[lg]t (X, C2)) 
llvm-svn: 56834
 2008-09-30 06:08:34 +00:00
Devang Patel
7536edca09 Support inreg, zext and sext as return value attributes. 
llvm-svn: 56801
 2008-09-29 20:49:50 +00:00
Evan Cheng
b749199c34 Fix PR2835. Do not change the width of a volatile load. 
llvm-svn: 56792
 2008-09-29 17:26:18 +00:00
Matthijs Kooijman
9fb8d5f5b1 Add a testcase showing that scalarrepl supports first class structs. 
I originally made this script to show that scalarrepl didn't support them, but
it turned out it does. Better to still add the testcase then.

llvm-svn: 56781
 2008-09-29 10:42:13 +00:00
Evan Cheng
28d9b3a8ad Re-apply 56683 with fixes. 
llvm-svn: 56748
 2008-09-27 01:56:22 +00:00
Devang Patel
f0ed717e54 Update tests. 
llvm-svn: 56730
 2008-09-27 00:25:28 +00:00
Devang Patel
47a504c87c Implement function notes as function attributes. 
llvm-svn: 56716
 2008-09-26 23:51:19 +00:00
Evan Cheng
d63fc80c1e Implement "punpckldq %xmm0, $xmm0" as "pshufd $0x50, %xmm0, %xmm" unless optimizing for code size. 
llvm-svn: 56711
 2008-09-26 23:41:32 +00:00
Bill Wendling
7273078850 Temporarily reverting r56683. This is causing a failure during the build of llvm-gcc: 
/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/xgcc -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.obj/./gcc/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/bin/ -B/Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/lib/ -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/include -isystem /Volumes/Gir/devel/llvm/clean/llvm-gcc.install/i386-apple-darwin9.5.0/sys-include -mmacosx-version-min=10.4 -O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Gir/devel/llvm/clean/llvm.obj/include -I/Volumes/Gir/devel/llvm/clean/llvm.src/include -fexceptions -fvisibility=hidden -DHIDE_EXPORTS -c ../../llvm-gcc.src/gcc/unwind-dw2-fde-darwin.c -o libgcc/./unwind-dw2-fde-darwin.o
Assertion failed: (TargetRegisterInfo::isVirtualRegister(regA) && TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical register live information"), function runOnMachineFunction, file /Volumes/Gir/devel/llvm/clean/llvm.src/lib/CodeGen/TwoAddressInstructionPass.cpp, line 311.
../../llvm-gcc.src/gcc/unwind-dw2.c:1527: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:3521:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
{standard input}:3521:symbol: "_dwarf_reg_size_table" can't be undefined in a subtraction expression
{standard input}:3520:non-relocatable subtraction expression, "_dwarf_reg_size_table" minus "L20$pb"
...

llvm-svn: 56703
 2008-09-26 22:10:44 +00:00
Evan Cheng
9946443460 Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0. 
llvm-svn: 56683
 2008-09-26 19:48:35 +00:00
Evan Cheng
b4d6625c85 Avoid spilling EBP / RBP twice in the prologue. 
llvm-svn: 56675
 2008-09-26 19:14:21 +00:00
Evan Cheng
c8674dcfd0 Prefer movlhps over punpcklqdq, etc. in more cases. 
llvm-svn: 56627
 2008-09-25 23:35:16 +00:00
Evan Cheng
d190aeb62d With sse3 and when the source is a load or has multiple uses, favors movddup over shuffp*, pshufd, etc. Without sse3 or when the source is from a register, make use of movlhps 
llvm-svn: 56620
 2008-09-25 20:50:48 +00:00
Dale Johannesen
62f64ab4c8 Accept 'inreg' attribute on x86 functions as 
meaning sse_regparm (i.e. float/double values go
in XMM0 instead of ST0).  Update documentation
to reflect reality.

llvm-svn: 56619
 2008-09-25 20:47:45 +00:00
Evan Cheng
efd1f614ff Fix patterns for SSE4.1 move and sign extend instructions. Also add instructions which fold VZEXT_MOVL and VZEXT_LOAD. 
llvm-svn: 56594
 2008-09-24 23:27:55 +00:00
Dale Johannesen
4184c23365 Remove SelectionDag early allocation of registers 
for earlyclobbers.  Teach Local RA about earlyclobber,
and add some tests for it.

llvm-svn: 56592
 2008-09-24 23:13:09 +00:00
Evan Cheng
eb5c357f03 Test fp not. 
llvm-svn: 56534
 2008-09-24 00:50:16 +00:00
Evan Cheng
f942615847 Properly handle 'm' inline asm constraints. If a GV is being selected for the addressing mode, it requires the same logic for PIC relative addressing, etc. 
llvm-svn: 56526
 2008-09-24 00:05:32 +00:00
Duncan Sands
2c9f6ab06d Rationalize the names of passes that print information: 
-callgraph => print-callgraph
    -callscc   => print-callgraph-sccs
    -cfgscc    => print-cfg-sccs
    -externalfnconstants => print-externalfnconstants
    -print               => print-function
    -print-alias-sets (no change)
    -print-callgraph     => dot-callgraph
    -print-cfg           => dot-cfg
    -print-cfg-only      => dot-cfg-only
    -print-dom-info (no change)
    -printm              => print-module
    -printusedtypes      => print-used-types

llvm-svn: 56487
 2008-09-23 12:47:39 +00:00
Evan Cheng
5bf702d20a Support x86 specific inline asm modifier 'J'. 
llvm-svn: 56483
 2008-09-22 23:57:37 +00:00
Evan Cheng
7f90017389 Test case for fp logical instructions. 
llvm-svn: 56474
 2008-09-22 22:19:34 +00:00
Arnold Schwaighofer
49f49e2086 Change the calling convention used when tail call optimization is enabled from CC_X86_32_TailCall to CC_X86_32_FastCC. 
llvm-svn: 56436
 2008-09-22 14:50:07 +00:00
Evan Cheng
270178bdda Fix PR2808. When regalloc runs out of register, it spill a physical register around the live interval being allocated. Do not continue to try to spill another register, just grab the physical register and move on. 
llvm-svn: 56381
 2008-09-20 01:28:05 +00:00
Evan Cheng
c01e6c2f59 Clean up the test. 
llvm-svn: 56380
 2008-09-20 01:26:27 +00:00
Evan Cheng
6a86ec1ef0 No need to print function stubs for Mac OS X 10.5 and up. Linker will handle it. 
llvm-svn: 56378
 2008-09-20 00:13:45 +00:00
Dan Gohman
f66b3277d3 Refactor X86SelectConstAddr, folding it into X86SelectAddress. This 
results in better code for globals. Also, unbreak the local CSE for
GlobalValue stub loads.

llvm-svn: 56371
 2008-09-19 22:16:54 +00:00
Evan Cheng
14493ffe78 Re-materalized definition instructions may be dead. Whack them. 
llvm-svn: 56352
 2008-09-19 17:38:47 +00:00
Duncan Sands
df9829409c Add test for improvement of readonly to readnone, 
and non-demotion of readnone to readonly.

llvm-svn: 56344
 2008-09-19 09:20:05 +00:00
Duncan Sands
6c31b40cef Turn on these tests! 
llvm-svn: 56343
 2008-09-19 09:16:32 +00:00
Duncan Sands
b2b5ddfaf6 Remove the MarkModRef pass (use AddReadAttrs instead). 
Unfortunately this means removing one regression test
of GlobalsModRef because I couldn't work out how to
perform it without MarkModRef.

llvm-svn: 56342
 2008-09-19 08:23:44 +00:00
Duncan Sands
c2ff9ca568 Add a new pass AddReadAttrs which works out which functions 
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.

llvm-svn: 56341
 2008-09-19 08:17:05 +00:00
Duncan Sands
bb48df5839 Test the callgraph directly for the missing edge. 
llvm-svn: 56338
 2008-09-19 08:01:57 +00:00
Duncan Sands
aaa27f4261 Teach -callgraph to always print the callgraph (as the 
description says it does), not just when -analyze is
used as well.  This means printing to stderr, so adjust
some tests.

llvm-svn: 56337
 2008-09-19 07:57:09 +00:00
Devang Patel
1e7ddf5d31 splitLoop does not handle split condition EQ. 
Fixes PR 2805

llvm-svn: 56321
 2008-09-18 23:45:14 +00:00
Dale Johannesen
99091ed94f Add a bit to mark operands of asm's that conflict 
with an earlyclobber operand elsewhere.  Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way 
that conflicts with an earlyclobber.  See also comments.

llvm-svn: 56290
 2008-09-17 21:13:11 +00:00
Evan Cheng
d3225118a6 Unallocatable registers do not have live intervals. 
llvm-svn: 56287
 2008-09-17 18:36:25 +00:00
Devang Patel
88efee2dcc Do not hoist instruction above branch condition. The instruction may use branch condition. 
llvm-svn: 56286
 2008-09-17 18:21:49 +00:00
Devang Patel
50c22bf69b Do not ignore iv uses outside the loop. 
This one slipped through cracks very well.

llvm-svn: 56284
 2008-09-17 17:53:47 +00:00
Bill Wendling
b2701e541c Add trampoline support to PPC. GCC simply calls the "__trampoline_setup" 
function with appropriate parameters. This allows us to support blocks on PPC.

llvm-svn: 56267
 2008-09-17 00:30:57 +00:00
Dan Gohman
885e592e9b Finally re-apply r46959. This is made feasible by the combination 
of r56230, r56232, and r56246.

llvm-svn: 56247
 2008-09-16 18:52:57 +00:00
Dan Gohman
c598e29a1c Improve instcombine's handling of integer min and max in two ways: 
- Recognize expressions like "x > -1 ? x : 0" as min/max and turn them
   into expressions like "x < 0 ? 0 : x", which is easily recognizable
   as a min/max operation.
 - Refrain from folding expression like "y/2 < 1" to "y < 2" when the
   comparison is being used as part of a min or max idiom, like
   "y/2 < 1 ? 1 : y/2". In that case, the division has another use, so
   folding doesn't eliminate it, and obfuscates the min/max, making it
   harder to recognize as a min/max operation.

These benefit ScalarEvolution, CodeGen, and anything else that wants to
recognize integer min and max.

llvm-svn: 56246
 2008-09-16 18:46:06 +00:00
Bill Wendling
fe6f2228ab Fix test to account for no more whitespace and that one of the matches is the 
"declare" statement.

llvm-svn: 56241
 2008-09-16 06:40:04 +00:00
Bill Wendling
f9a01704af Remove space that was forgotten.` 
llvm-svn: 56240
 2008-09-16 06:30:47 +00:00
Dan Gohman
64622ff4d6 Fix spacing in the grep line for this test, following the recent 
SCEV-whitespace changes.

llvm-svn: 56234
 2008-09-16 01:37:08 +00:00
Dan Gohman
54ef20348e Re-enables the new vector select in the bitcode reader, by modifying the 
bitcode reader/writer as follows:

- add and use new bitcode FUNC_CODE_INST_VSELECT to handle the llvm
select opcode using either i1 or [N x i1] as the selector.
- retain old BITCODE FUNC_CODE_INST_SELECT in the bitcode reader to
handle select on i1 for backwards compatibility with existing bitcode
files.
- re-enable the vector-select.ll test program.

Also, rename the recently added bitcode opcode FUNC_CODE_INST_VCMP to
FUNC_CODE_INST_CMP2 and make the bitcode writer use it to handle
fcmp/icmp on scalars or vectors. In the bitcode writer, use
FUNC_CODE_INST_CMP for vfcmp/vicmp only. In the bitcode reader, have
FUNC_CODE_INST_CMP handle icmp/fcmp returning bool, for backwards
compatibility with existing bitcode files.

Patch by Preston Gurd!

llvm-svn: 56233
 2008-09-16 01:01:33 +00:00
Dan Gohman
0045cec2ba Teach ScalarEvolution to consider loop preheaders in the search for 
an if statement that guards a loop, to allow indvars to avoid smax
operations in more situations.

llvm-svn: 56232
 2008-09-15 22:18:04 +00:00
Dan Gohman
faa15214e0 Teach LSR to optimize away SMAX operations for tripcounts in common 
cases.  See the comment above OptimizeSMax for the full story, and
the testcase for an example. This cancels out a pessimization
commonly attributed to indvars, and will allow us to lift some of
the artificial throttles in indvars, rather than add new ones.

llvm-svn: 56230
 2008-09-15 21:22:06 +00:00
Dan Gohman
f38d63884f Re-enable SelectionDAG CSE for calls. It matters in the case of 
libcalls, as in this testcase on ARM.

llvm-svn: 56226
 2008-09-15 19:46:03 +00:00
Bruno Cardoso Lopes
5463c59693 Added testcase for bswap allegrexel intrinsic 
llvm-svn: 56225
 2008-09-15 19:38:11 +00:00
Evan Cheng
db1693cb14 Correctly update kill infos after extending a live range and merge 2 val#'s; fix 56165 - do not mark val# copy field if the copy does not define the val#. 
llvm-svn: 56199
 2008-09-15 06:28:41 +00:00
Dan Gohman
6418cb3998 Fix WriteAsOperand to not emit a leading space character. Adjust 
its callers to emit a space character before calling it when a
space is needed.

This fixes several spurious whitespace issues in
ScalarEvolution's debug dumps. See the test changes for
examples.

This also fixes odd space-after-tab indentation in the output
for switch statements, and changes calls from being printed like
this:
  call void @foo( i32 %x )
to this:
  call void @foo(i32 %x)

llvm-svn: 56196
 2008-09-14 17:21:12 +00:00
Duncan Sands
8d5640ac90 Fix PR2792: treat volatile loads as writing memory somewhere. 
Treat stores as reading memory, just to play safe.

llvm-svn: 56188
 2008-09-13 12:45:50 +00:00
Evan Cheng
07046dae41 On some targets, non-move instructions can become move instructions because of coalescing. e.g. 
vr2 = OR vr0, vr1
=>
vr2 = OR vr1, vr1   // after coalescing vr0 with vr1

Update the value# of the destination register with the copy instruction if that happens.

llvm-svn: 56165
 2008-09-12 18:13:14 +00:00
Dan Gohman
0b6d3a9a9b On 64-bit targets, change 32-bit getelementptr indices to be 64-bit 
getelementptr indices, inserting an explicit cast if necessary.
This helps expose the sign-extension operation to other optimizations.

llvm-svn: 56133
 2008-09-11 23:06:38 +00:00
Dan Gohman
5e154a591d Fix a vectorshuffle instcombine bug introduced by r55995. 
Patch by Nicolas Capens!

llvm-svn: 56129
 2008-09-11 22:47:57 +00:00
Arnold Schwaighofer
9cfcc68e04 Add indirect tail call (function pointer) examples. 
llvm-svn: 56127
 2008-09-11 22:24:28 +00:00
Arnold Schwaighofer
adfb111f10 When tailcallopt is enabled all fastcc calls must have an aligned argument stack size. Add a test case. 
llvm-svn: 56119
 2008-09-11 20:28:43 +00:00
Evan Cheng
5c7e3783ef Fix PR2748. Avoid coalescing physical register with virtual register which would create illegal extract_subreg. e.g. 
vr1024 = extract_subreg vr1025, 1
...
vr1024 = mov8rr AH
If vr1024 is coalesced with AH, the extract_subreg is now illegal since AH does not have a super-reg whose sub-register 1 is AH.

llvm-svn: 56118
 2008-09-11 20:07:10 +00:00
Evan Cheng
99be914c9a Fix PR2783 - coalescer bug. Missing a TargetRegisterInfo::isVirtualRegister check. 
llvm-svn: 56112
 2008-09-11 18:40:32 +00:00
Evan Cheng
b879f93ba5 Propagate subreg index when promoting a load to a copy. 
llvm-svn: 56085
 2008-09-11 01:02:12 +00:00
Dan Gohman
ebfb483309 Fix an icmp+sdiv optimization to check for and handle an overflow 
condition. This fixes PR2740.

llvm-svn: 56076
 2008-09-10 23:30:57 +00:00
Evan Cheng
83c694fbe7 Fix a fastcc + sret bug. If fastcc and sret, callee doesn't need to pop the hidden struct ptr; Re-enable fastcc. 
llvm-svn: 56061
 2008-09-10 18:25:29 +00:00
Evan Cheng
ba11945234 Legalizer was missing code that expand fpow to a libcall. 
llvm-svn: 56028
 2008-09-09 23:02:14 +00:00
Devang Patel
ed0ea8049f Remove. 
llvm-svn: 56018
 2008-09-09 21:41:34 +00:00
Devang Patel
7365754925 if loop induction variable is always sign or zero extended then 
extend the type of induction variable.

llvm-svn: 56017
 2008-09-09 21:41:07 +00:00
Devang Patel
36ad68421e fix overflow check. 
llvm-svn: 56011
 2008-09-09 20:54:34 +00:00
Evan Cheng
304fba81c9 Fix PR2757. Ignore liveinterval register allocation preference if the preference register is not in the right register class. This can happen due to sub-register coalescing. 
llvm-svn: 56006
 2008-09-09 20:22:01 +00:00
Anton Korobeynikov
4676c09dc8 Resolve aliases, when possible 
llvm-svn: 56001
 2008-09-09 19:04:59 +00:00
Dan Gohman
28c911b79b Make SimplifyDemandedVectorElts simplify vectors with multiple 
users, and teach it about shufflevector instructions.

Also, fix a subtle bug in SimplifyDemandedVectorElts'
insertelement code.

This is a patch that was originally written by Eli Friedman,
with some fixes and cleanup by me.

llvm-svn: 55995
 2008-09-09 18:11:14 +00:00
Duncan Sands
d8ab4c3485 Correct callgraph construction. It has two problems: 
(1) code left over from the days of ConstantPointerRef:
if a use of a function is a GlobalValue then that is
not considered a reason to add an edge from the external
node, even though the use may be as an initializer for
an externally visible global!  There might be some point
to this behaviour when the use is by an alias (though the
code predated aliases by some centuries), but I think
PR2782 is a better way of handling that.  (2) If function
F calls function G, and also G is a parameter to the
call, then an F->G edge is not added to the callgraph.
While this doesn't seem to matter much, adding such an
edge makes the callgraph more regular.
In addition, the new code should be faster as well as
simpler.

llvm-svn: 55987
 2008-09-09 12:40:47 +00:00
Dan Gohman
12e88b5421 Temporarily disable vector select in the bitcode reader. The 
way it handles the type of the condition is breaking plain
scalar select in the case that the value is a
forward-reference.

llvm-svn: 55976
 2008-09-09 02:08:49 +00:00
Evan Cheng
dc011a1b10 Fix a constant lowering bug. Now we can do load and store instructions with funky getelementptr embedded in the address operand. 
llvm-svn: 55975
 2008-09-09 01:26:59 +00:00
Devang Patel
b6380f607d Fix simplifycfg crash in handing block merge. 
llvm-svn: 55971
 2008-09-09 01:06:56 +00:00
Dan Gohman
3e79d697f3 Extend the vcmp/fcmp LLVM IR instructions to take vectors as arguments 
and, if so, to return a vector of boolean as a result;

Extend the select LLVM IR instruction to allow you to specify a result
type which is a vector of boolean, in which case the result will be an
element-wise selection instead of choosing one vector or the other; and

Update LangRef.html to describe these changes.

This patch was contributed by Preston Gurd!

llvm-svn: 55969
 2008-09-09 01:02:47 +00:00
Anton Korobeynikov
afd49daa42 Reapply 55902: Add test for checking proper lowering of eh_return & unwind init intrinsics on 32bit x86 targets 
llvm-svn: 55960
 2008-09-08 21:14:36 +00:00
Anton Korobeynikov
ddf0f04445 Reapply 55903: Testcase for 64-bit lowering of eh_return & unwind_init 
llvm-svn: 55959
 2008-09-08 21:14:19 +00:00
Dan Gohman
6f360fc081 Add a target triple; apparently LLVM doesn't use 64-bit 
data directives on darwin.

llvm-svn: 55941
 2008-09-08 20:16:18 +00:00
Bill Wendling
122df59fda Remove these testcases associated with changes between r 55898 and r 55909. 
llvm-svn: 55931
 2008-09-08 18:00:39 +00:00
Bill Wendling
4cc4caab72 Reverting r55898 to r55909. One of these patches was causing an ICE during the full bootstrap on Darwin: 
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/bin/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/lib/
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/include
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/sys-include
-O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc
-I../../llvm-gcc.src/gcc/. -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
-DSHARED -m64 -DL_negdi2 -c ../../llvm-gcc.src/gcc/libgcc2.c -o
libgcc/x86_64/_negdi2_s.o
Assertion failed: (TargetRegisterInfo::isVirtualRegister(regA) &&
TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical
register live information"), function runOnMachineFunction, file
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/lib/CodeGen/TwoAddressInstructionPass.cpp,
line 311.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/bin/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/lib/
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/include
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/sys-include
-O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc
-I../../llvm-gcc.src/gcc/. -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
-DSHARED -m64 -DL_lshrdi3 -c ../../llvm-gcc.src/gcc/libgcc2.c -o
libgcc/x86_64/_lshrdi3_s.o
../../llvm-gcc.src/gcc/unwind-dw2.c:1527: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:unknown:Undefined local symbol LBB21_11
{standard input}:unknown:Undefined local symbol LBB21_12
{standard input}:unknown:Undefined local symbol LBB21_13
{standard input}:unknown:Undefined local symbol LBB21_8

llvm-svn: 55928
 2008-09-08 17:59:12 +00:00
Evan Cheng
fc78ac5bbe Handle calls which produce i1 results: promote to i8 but and it with 1 to get the low bit. 
llvm-svn: 55925
 2008-09-08 17:15:42 +00:00
Dan Gohman
f2a912c2a7 Add AsmPrinter support for i128 and larger static initializer data. 
llvm-svn: 55919
 2008-09-08 16:40:13 +00:00
Devang Patel
c60c8e35eb xfail 
llvm-svn: 55914
 2008-09-08 16:24:30 +00:00
Anton Korobeynikov
0da56882db Testcase for 64-bit lowering of eh_return & unwind_init 
llvm-svn: 55903
 2008-09-08 14:23:16 +00:00
Anton Korobeynikov
7dc16250e7 Add test for checking proper lowering of eh_return & unwind init intrinsics on 32bit x86 targets 
llvm-svn: 55902
 2008-09-08 14:22:57 +00:00
Rafael Espindola
ce4f075afd Add testcase from bug 2770. 
llvm-svn: 55897
 2008-09-08 11:17:54 +00:00
Duncan Sands
62431a29a5 Update the callgraph correctly in ArgumentPromotion. 
llvm-svn: 55895
 2008-09-08 11:07:35 +00:00
Evan Cheng
f8d8287454 Correctly handle physical register inputs. They are not explicit input operands in the resulting machine instrs. 
llvm-svn: 55893
 2008-09-08 08:39:33 +00:00
Evan Cheng
6690ccd573 Handle x86 truncate to i8 with target hook for now. 
llvm-svn: 55877
 2008-09-07 08:47:42 +00:00