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5006 Commits

Author SHA1 Message Date
Gabor Greif
d61f20217a API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.) 
llvm-svn: 51200
 2008-05-16 19:29:10 +00:00
Evan Cheng
538403664e If the result of a BIT_CONVERT is a v1* vector, it doesn't mean its source is a v1* vector. 
llvm-svn: 51192
 2008-05-16 17:19:05 +00:00
Duncan Sands
a018f1f47e Silence the compiler warning differently. The 
original method caused gcc-4.2 to complain.

llvm-svn: 51186
 2008-05-16 09:19:16 +00:00
Nate Begeman
b38ee2e03b Actually scalarize the operand to BIT_CONVERT instead of asking someone to do 
something with a v1 type.

llvm-svn: 51160
 2008-05-15 20:40:58 +00:00
Dan Gohman
821bf58428 IR support for extractvalue and insertvalue instructions. Also, begin 
moving toward making structs and arrays first-class types.

llvm-svn: 51157
 2008-05-15 19:50:34 +00:00
Evan Cheng
778a5e27b0 Make use of vector load and store operations to implement memcpy, memmove, and memset. Currently only X86 target is taking advantage of these. 
llvm-svn: 51140
 2008-05-15 08:39:06 +00:00
Evan Cheng
e935a1ac40 Use a better idiom to silence compiler warnings. 
llvm-svn: 51131
 2008-05-14 21:08:07 +00:00
Evan Cheng
9d22a90b0b Really silence compiler warnings. 
llvm-svn: 51126
 2008-05-14 20:29:30 +00:00
Evan Cheng
1b39709701 Really silence compiler warnings. 
llvm-svn: 51123
 2008-05-14 20:26:35 +00:00
Dale Johannesen
768b6f281e Add CommonLinkage; currently tentative definitions 
are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both.  The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.

llvm-svn: 51118
 2008-05-14 20:12:51 +00:00
Evan Cheng
e7684b9e91 Silence some compiler warnings. 
llvm-svn: 51115
 2008-05-14 20:07:51 +00:00
Dan Gohman
cd29e1fa60 When bit-twiddling CondCode values for integer comparisons produces 
SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.

llvm-svn: 51112
 2008-05-14 18:17:09 +00:00
Dan Gohman
ffe0b1f40e Whitespace cleanups. 
llvm-svn: 51089
 2008-05-14 00:43:10 +00:00
Evan Cheng
9e15622879 Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset. 
pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax

llvm-svn: 51026
 2008-05-13 08:35:03 +00:00
Dan Gohman
138a53b303 Change class' public PassInfo variables to by initialized with the 
address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022
 2008-05-13 02:05:11 +00:00
Dan Gohman
bab18cae46 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
 2008-05-13 00:00:25 +00:00
Nate Begeman
5d939498c3 Teach Legalize how to scalarize VSETCC 
Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.

llvm-svn: 51009
 2008-05-12 23:09:43 +00:00
Evan Cheng
fcbdc8bd6e Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other. 
llvm-svn: 51008
 2008-05-12 23:04:07 +00:00
Dale Johannesen
b4da55c4a3 Be more aggressive about tail-merging small blocks 
if those blocks consist entirely of common instructions;
merging will not add an extra branch in this case.

llvm-svn: 51006
 2008-05-12 22:53:12 +00:00
Bill Wendling
2f2610cf51 Constify isSourceDefinedByImplicitDef function. Otherwise, just formatting 
changes that don't change functionality.

llvm-svn: 51004
 2008-05-12 22:15:05 +00:00
Dale Johannesen
25896f8e93 Further rework of tail merge algorithm. Not quite 
semantically identical, but little difference in
either results or execution speed; but it's much
easier to read, at least IMO.

llvm-svn: 50999
 2008-05-12 20:33:57 +00:00
Evan Cheng
c7e9acfed7 Refactor isConsecutiveLoad from X86 to TargetLowering so DAG combiner can make use of it. 
llvm-svn: 50991
 2008-05-12 19:56:52 +00:00
Bill Wendling
f3c4b7fbb5 Revert the previous commit. Go ahead and hoist rematerializable instructions. 
llvm-svn: 50990
 2008-05-12 19:47:18 +00:00
Nate Begeman
11c0772a30 Add support for vicmp/vfcmp codegen, more legalize support coming. 
This is necessary to unbreak the build.

llvm-svn: 50988
 2008-05-12 19:40:03 +00:00
Bill Wendling
74cabebb44 One real change - don't hoist something that's trivially rematerializable. It's 
possible for it to produce worse code than before.

The rest of this patch is code cleanup.

llvm-svn: 50987
 2008-05-12 19:38:32 +00:00
Dan Gohman
6fcb44e191 Fix a missing break in the ISD::FLT_ROUNDS_ handling. Patch by giuma! 
llvm-svn: 50967
 2008-05-12 16:07:15 +00:00
Evan Cheng
cf4d5567d5 If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy. 
llvm-svn: 50927
 2008-05-10 00:17:50 +00:00
Bill Wendling
89c91f81ae Cosmetic changes: 
- Comment fixes.
 - Moar whitespace.
 - Made ivars "private" by default.
No functionality change.

llvm-svn: 50926
 2008-05-10 00:12:52 +00:00
Dale Johannesen
a422bcbec2 Remove an evil vector bool. Cosmetic refactoring, 
no functional change.

llvm-svn: 50921
 2008-05-09 23:28:24 +00:00
Dale Johannesen
09a45f2ca3 Rewrite tail merging algorithm to handle the 
case where there are multiple blocks with a large
number of common tail instructions more efficiently
(compile time optimization).

llvm-svn: 50916
 2008-05-09 21:24:35 +00:00
Duncan Sands
5775b74165 Get exception handling working again on 64 bit 
Darwin.  This is a hack of course, but it does
at least look at the right thing: gotpcrel means
that this is already an offset, so an explicit
offset is not needed (and wrong).  I think this
is good enough for the moment: Anton is working
on something better.

llvm-svn: 50850
 2008-05-08 12:33:11 +00:00
Anton Korobeynikov
ddb93e7a02 Turn StripPointerCast() into a method 
llvm-svn: 50836
 2008-05-07 22:54:15 +00:00
Duncan Sands
6f4e916c6a Output correct exception handling and frame info 
on x86-64 linux.  This causes no regressions on
32 bit linux and 32 bit ppc.  More tests pass
on 64 bit ppc with no regressions.  I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet.  But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch.  Thanks to
Dale for testing.  The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.

llvm-svn: 50825
 2008-05-07 19:11:09 +00:00
Evan Cheng
c86c035346 Yet another nasty spiller bug. 
%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.

llvm-svn: 50794
 2008-05-07 00:49:28 +00:00
Dan Gohman
6ea87fa437 Fix a bug in the ComputeMaskedBits logic for multiply. 
llvm-svn: 50793
 2008-05-07 00:35:55 +00:00
Anton Korobeynikov
90ee6d6616 Make StripPointerCast a common function (should we mak it method of Value instead?) 
llvm-svn: 50775
 2008-05-06 22:52:30 +00:00
Dan Gohman
d4a670284c Make several variable declarations static. 
llvm-svn: 50696
 2008-05-06 01:53:16 +00:00
Dan Gohman
a84b75df17 Remove uses of llvm/System/IncludeFile.h that are no longer needed. 
llvm-svn: 50695
 2008-05-06 01:32:53 +00:00
Dan Gohman
0ad61a718c Instead of enumerating each opcode that isn't handled that 
ComputeMaskedBits handles, just use a 'default:'. This avoids
TargetLowering's list getting out of date with SelectionDAG's.

llvm-svn: 50693
 2008-05-06 00:53:29 +00:00
Dan Gohman
faf9df7227 Correct the value of LowBits in srem and urem handling in 
ComputeMaskedBits.

llvm-svn: 50692
 2008-05-06 00:51:48 +00:00
Dan Gohman
f7f3f7ab8f Fix a broken doxygen comment, and reword it for clarity. 
llvm-svn: 50687
 2008-05-06 00:20:10 +00:00
Mon P Wang
84a269e023 Added addition atomic instrinsics and, or, xor, min, and max. 
llvm-svn: 50663
 2008-05-05 19:05:59 +00:00
Dan Gohman
3dfc43343b Fix a bug in the ELF writer that caused it to produce malformed 
ELF headers. The ELF writer still isn't generally usable though.

llvm-svn: 50652
 2008-05-05 16:48:32 +00:00
Dan Gohman
c860d9c77c Add AsmPrinter support for emitting a directive to declare that 
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 

llvm-svn: 50634
 2008-05-05 00:28:39 +00:00
Dan Gohman
27156711ef Fix a mistake in the computation of leading zeros for udiv. 
llvm-svn: 50591
 2008-05-02 21:30:02 +00:00
Dan Gohman
4de7fe7ddc Fix a typo in a comment. 
llvm-svn: 50562
 2008-05-02 00:05:03 +00:00
Dan Gohman
a55bbcacce Use push_back(...) instead of resize(1, ...), per review feedback. 
llvm-svn: 50561
 2008-05-02 00:03:54 +00:00
Dan Gohman
148b1904fe Fix uninitialized uses of the FPC variable. 
llvm-svn: 50558
 2008-05-01 23:40:44 +00:00
Chris Lattner
e9bbe8e6b6 don't randomly miscompile seto/setuo just because we are in 
ffastmath mode.  This fixes rdar://5902801, a miscompilation
of gcc.dg/builtins-8.c.

Bill, please pull this into Tak.

llvm-svn: 50523
 2008-05-01 07:26:11 +00:00
Arnold Schwaighofer
f58a35e2ec Tail call optimization improvements: 
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.

Initial PowerPC tail call implementation:

Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).  
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if 
  caller and callee are fastcc
  call is a tail call (in tail call position, call followed by ret)
  no variable argument lists or byval arguments
  option -tailcallopt is enabled
Supported:
 * non pic tail calls on linux/darwin
 * module-local tail calls on linux(PIC/GOT)/darwin(PIC)
 * inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.

A test checking the argument lowering behaviour on x86-64 was added.

llvm-svn: 50477
 2008-04-30 09:16:33 +00:00