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Author SHA1 Message Date
Evan Cheng
8633da0707 When a live virtual register is being clobbered by an implicit def, it is spilled 
and the spill is its kill. However, if the local allocator has determined the
register has not been modified (possible when its value was reloaded), it would
not issue a restore. In that case, mark the last use of the virtual register as
kill.

llvm-svn: 46111
 2008-01-17 02:08:17 +00:00
Chris Lattner
c32be7e6b2 Fix arg promotion to propagate the correct attrs on the calls to 
promoted functions.  This is important for varargs calls in 
particular.  Thanks to duncan for providing a great testcase.

llvm-svn: 46108
 2008-01-17 01:17:03 +00:00
Evan Cheng
a637a9c2f5 Replace std::vector<bool> with BitVector. 
llvm-svn: 46104
 2008-01-17 00:35:26 +00:00
Evan Cheng
5be34d811c Fixes a nasty dag combiner bug that causes a bunch of tests to fail at -O0. 
It's not safe to use the two value CombineTo variant to combine away a dead load.
e.g. 
v1, chain2 = load chain1, loc
v2, chain3 = load chain2, loc
v3         = add v2, c 
Now we replace use of v1 with undef, use of chain2 with chain1.
ReplaceAllUsesWith() will iterate through uses of the first load and update operands:
v1, chain2 = load chain1, loc
v2, chain3 = load chain1, loc
v3         = add v2, c 
Now the second load is the same as the first load, SelectionDAG cse will ensure
the use of second load is replaced with the first load.
v1, chain2 = load chain1, loc
v3         = add v1, c
Then v1 is replaced with undef and bad things happen.

llvm-svn: 46099
 2008-01-16 23:11:54 +00:00
Duncan Sands
78e448d8b4 Trampoline support for x86-64. This looks like 
it should work, but I have no machine to test
it on.  Committed because it will at least
cause no harm, and maybe someone can test it
for me!

llvm-svn: 46098
 2008-01-16 22:55:25 +00:00
Chris Lattner
81a39bb7ba Handle attribute(used) global variables that are i8. 
llvm-svn: 46090
 2008-01-16 21:35:43 +00:00
Dale Johannesen
cfa41e888e Do not mark EH tables no-dead-strip unless the 
associated function is so marked.

llvm-svn: 46088
 2008-01-16 19:59:28 +00:00
Chris Lattner
3c9f208ca8 add testcase for regression 
llvm-svn: 46073
 2008-01-16 18:03:52 +00:00
Chris Lattner
0d572fea6f Fix a ppc long double regression I introduced yesterday due to a 
simplification.  This fixes automotive-basicmath on PPC.

llvm-svn: 46072
 2008-01-16 17:59:31 +00:00
Chris Lattner
fb1774e709 merge a few pieces of code that do the store/load to stack 
pattern to use EmitStackConvert now.

llvm-svn: 46066
 2008-01-16 07:51:34 +00:00
Chris Lattner
cd012ca345 rename ExpandBIT_CONVERT to EmitStackConvert, generalizing 
it to allow it to emit different load and store kinds.

llvm-svn: 46065
 2008-01-16 07:45:30 +00:00
Chris Lattner
db34498516 simplify a bunch of code by using SelectionDAG::CreateStackTemporary 
instead of inlining its body.

llvm-svn: 46062
 2008-01-16 07:03:22 +00:00
Chris Lattner
1f22d9154a Change legalizeop of FP_ROUND and FP_EXTEND to not fall through 
into the ANY_EXTEND/ZERO_EXTEND/SIGN_EXTEND code to simplify it.

Unmerge the code for FP_ROUND and FP_EXTEND from each other to 
make each one simpler.

llvm-svn: 46061
 2008-01-16 06:57:07 +00:00
Chris Lattner
109f0e56f5 make sure to use a cpu that has sse. 
llvm-svn: 46060
 2008-01-16 06:32:02 +00:00
Chris Lattner
2825f8fff0 make it more clear that this predicate only applies to scalar FP types. 
llvm-svn: 46058
 2008-01-16 06:24:21 +00:00
Chris Lattner
fbb75278b2 introduce a isTypeInSSEReg predicate, which allows us to simplify 
some code.  No functionality change.

llvm-svn: 46055
 2008-01-16 06:19:45 +00:00
Chris Lattner
41e1fd13b2 My previous commit had an incomplete message, it should have been: 
make the 'fp return in ST(0)' optimization smart enough to
look through token factor nodes.  THis allows us to compile 
testcases like CodeGen/X86/fp-stack-retcopy.ll into:

_carg:
	subl	$12, %esp
	call	L_foo$stub
	fstpl	(%esp)
	fldl	(%esp)
	addl	$12, %esp
	ret

instead of:

_carg:
	subl	$28, %esp
	call	L_foo$stub
	fstpl	16(%esp)
	movsd	16(%esp), %xmm0
	movsd	%xmm0, 8(%esp)
	fldl	8(%esp)
	addl	$28, %esp
	ret

Still not optimal, but much better and this is a trivial patch.  Fixing 
the rest requires invasive surgery that is is not llvm 2.2 material.

llvm-svn: 46054
 2008-01-16 05:56:59 +00:00
Chris Lattner
1819f31640 make the 'fp return in ST(0)' optimization smart enough to 
look through token factor

llvm-svn: 46053
 2008-01-16 05:53:06 +00:00
Chris Lattner
d9f29a1e3e various whitespace cleanups, no functionality change. 
llvm-svn: 46052
 2008-01-16 05:52:18 +00:00
Chris Lattner
50f1b6f9a5 Factor the ReachesChainWithoutSideEffects out of dag combiner into 
a public SDOperand::reachesChainWithoutSideEffects method.  No 
functionality change.

llvm-svn: 46050
 2008-01-16 05:49:24 +00:00
Devang Patel
a8d63b0b30 Do not strip llvm.used values. 
llvm-svn: 46045
 2008-01-16 03:33:05 +00:00
Ted Kremenek
9b2d0769ed Changed ImmutableMap::find to return an iterator instead of a pointer 
to the tree node.

llvm-svn: 46034
 2008-01-15 23:53:53 +00:00
Devang Patel
2dda5ca0a4 - Introduces versioning macro LLVM_LTO_VERSION 
- Communicate symbol visibility
- Communicate code generation model

llvm-svn: 46033
 2008-01-15 23:52:34 +00:00
Chris Lattner
b7af13397a Commit a piece that I missed before, patch by Alain Frisch 
llvm-svn: 46032
 2008-01-15 23:27:40 +00:00
Dale Johannesen
1268083b64 Missed file from previous checkin. 
llvm-svn: 46030
 2008-01-15 23:25:27 +00:00
Dale Johannesen
319c7bb405 Fix and enable EH for x86-64 Darwin. Adds 
ShortenEHDataFor64Bits as a not-very-accurate
abstraction to cover all the changes in DwarfWriter.
Some cosmetic changes to Darwin assembly code for
gcc testsuite compatibility.

llvm-svn: 46029
 2008-01-15 23:24:56 +00:00
Owen Anderson
214c1c3461 Move some calls to getVRegDef higher in the callgraph, so they don't get executed as frequently in performance sensitive code. 
llvm-svn: 46027
 2008-01-15 22:58:11 +00:00
Chris Lattner
2595fd0ca7 improve compatibility with mingw, patch by Alain Frisch 
llvm-svn: 46026
 2008-01-15 22:50:50 +00:00
Chris Lattner
f0dd2bb4e6 add a test to ensure that argpromote of one argument doesn't 
break the byval attr on some other argument.

llvm-svn: 46025
 2008-01-15 22:38:12 +00:00
Anton Korobeynikov
b26ac8cbb2 Add description of 'llvm.trap' intrinsic. Also, minor fixes in formatting. 
llvm-svn: 46024
 2008-01-15 22:31:34 +00:00
Chris Lattner
afd4056065 verify x86 generates ud2 for llvm.trap 
llvm-svn: 46023
 2008-01-15 22:22:02 +00:00
Evan Cheng
b94df1d6e5 Unbreak the build. 
llvm-svn: 46021
 2008-01-15 22:19:35 +00:00
Chris Lattner
4d3944c554 new testcase for llvm.trap. 
llvm-svn: 46020
 2008-01-15 22:17:26 +00:00
Chris Lattner
dac9c1bcfe If someone wants to implement ppc TRAP, they can go for it :) 
llvm-svn: 46019
 2008-01-15 22:15:02 +00:00
Chris Lattner
bcb087fd62 The type of the 'abort' node should be pointer type (because 
it's a function pointer) not MVT::Other.  This fixes builtin_trap
lowering on ppc, alpha, ia64

llvm-svn: 46018
 2008-01-15 22:09:33 +00:00
Chris Lattner
6846e346a8 rename SDTRet -> SDTNone. 
Move definition of 'trap' sdnode up from x86 instrinfo to targetselectiondag.td.

llvm-svn: 46017
 2008-01-15 22:02:54 +00:00
Owen Anderson
946d55e773 Remove DefInst from LiveVariables::VarInfo. Use the facilities on MachineRegisterInfo instead. 
llvm-svn: 46016
 2008-01-15 22:02:46 +00:00
Chris Lattner
0072ce1ff4 no need to expand ISD::TRAP to X86ISD::TRAP, just match ISD::TRAP. 
llvm-svn: 46015
 2008-01-15 21:58:22 +00:00
Chris Lattner
54fd35650d Add support for targets that have a legal ISD::TRAP. 
llvm-svn: 46014
 2008-01-15 21:58:08 +00:00
Chuck Rose III
7dfc302a45 Add files to windows project files. Also include <algorithm> explicitly so that vstudio build works 
llvm-svn: 46013
 2008-01-15 21:43:17 +00:00
Anton Korobeynikov
44893ee93d Fix JIT encoding of trap/ud2 instruction 
llvm-svn: 46012
 2008-01-15 21:40:02 +00:00
Bill Wendling
0ad07f292c Reformatted. It was confusing the other way. No functionality change. 
llvm-svn: 46009
 2008-01-15 21:16:32 +00:00
Gordon Henriksen
26e9b6653c Fix a memory correctness error noticed by valgrind (harmless in practice). 
Thanks to Duncan Sands for noticing it.

llvm-svn: 46007
 2008-01-15 20:02:11 +00:00
Duncan Sands
1095bdca79 Testcase for gimplify_expr crash caused by an 
unexpected placeholder_expr.

llvm-svn: 46006
 2008-01-15 19:55:41 +00:00
Evan Cheng
5e40103440 Oops. Forgot to commit this. 
llvm-svn: 46003
 2008-01-15 07:49:54 +00:00
Evan Cheng
4eb3d6c8d6 Oops. Forgot to commit this. 
llvm-svn: 46002
 2008-01-15 07:49:36 +00:00
Anton Korobeynikov
08ea121968 For PR1839: add initial support for __builtin_trap. llvm-gcc part is missed 
as well as PPC codegen

llvm-svn: 46001
 2008-01-15 07:02:33 +00:00
Chris Lattner
8c17d65f09 clarify that byval is valid for any pointer argument. 
llvm-svn: 45998
 2008-01-15 04:34:22 +00:00
Evan Cheng
d7403ac663 Rename CCIfStruct to CCIfByVal and CCStructAssign to CCPassByVal. Remove unused parameters of CCStructAssign and add size and alignment requirement info. 
llvm-svn: 45997
 2008-01-15 03:34:58 +00:00
Evan Cheng
4eb7ae04c5 Both x86-32 and x86-64 handle byval parameter attributes. 
llvm-svn: 45996
 2008-01-15 03:15:41 +00:00