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Author SHA1 Message Date
Chris Lattner
bc0b9f70ae start inferring 'no side effects'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45822 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 05:39:30 +00:00
Chris Lattner
9b37aaf04c get def use info more correct. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45821 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 05:12:37 +00:00
Chris Lattner
8926038785 Infer mayload 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45819 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 04:44:48 +00:00
Chris Lattner
8947dd539e add SDNPMayLoad to the 'load' sdnode definition. This is enough to get all the x86 
instructions (with patterns) that load memory marked, for example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45818 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 04:44:32 +00:00
Chris Lattner
710e995889 realize that instructions who match intrinsics that read memory read memory. 
Also, instructions with any nodes that are SDNPMayLoad also read memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45817 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 04:38:57 +00:00
Chris Lattner
8794390406 verify that the frame index is immutable before remat'ing (still disabled) 
or being side-effect free.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45816 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 04:16:31 +00:00
Owen Anderson
c95f075c43 Don't use LiveVariables::VarInfo::DefInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45815 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 03:12:54 +00:00
Evan Cheng
9c9cec4372 Codegen improvement has reduced one spill. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45814 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 02:54:40 +00:00
Evan Cheng
e70bb59840 Mark byval parameter stack objects mutable for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45813 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 02:24:25 +00:00
Evan Cheng
0d0e1b58cb Add a isImmutable bit to StackObject. Fixed stack objects are immutable (in the function) unless specified otherwise. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45812 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 02:18:37 +00:00
Dale Johannesen
038129dd58 Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45811 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 02:03:30 +00:00
Owen Anderson
ddd060ffcf Get rid of all uses of LiveVariables::VarInfo::DefInst in favor of the equivalent API from 
MachineRegisterInfo.  Once all clients are switched over, the former will be going away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45805 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 01:36:43 +00:00
Chris Lattner
c637d6f452 provide def_* and use_* iterators in addition to reg_* iterators. 
The first only returns definitions of a register, the second only
returns uses, the third returns both.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45803 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 01:01:27 +00:00
Owen Anderson
dc4d6558e4 Add more comments explaining the basics of how the decision of when to rename and when to insert 
copies is made.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45799 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:47:01 +00:00
Evan Cheng
27a446afaf Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45798 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:37:26 +00:00
Owen Anderson
b199cbec2e Get rid of the isKillInst predicate. LiveVariables already provides this information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45797 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:33:11 +00:00
Chris Lattner
9c4428b217 Fix PR1845 and rdar://5676945. Generic vectors smaller 
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45796 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:30:57 +00:00
Chris Lattner
314286f6bd new testcase for PR1845 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45795 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:30:38 +00:00
Evan Cheng
dffbd837b8 Remove comments that do not correspond to anything after recent refactoring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:09:10 +00:00
Owen Anderson
9c2efa8a8f Copies need to be inserted before the first terminator, not at the end of the block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45791 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-10 00:01:41 +00:00
Evan Cheng
19107563af Special copy SUnit's do not have SDNode's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45787 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 23:01:55 +00:00
Owen Anderson
ec1213fbbb Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's 
still more work to do on this front.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45783 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 22:40:54 +00:00
Duncan Sands
f52e32aab0 Fix compile failures with g++-4.3. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45781 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 19:42:09 +00:00
Chris Lattner
8b44b90644 many cleanups and fixed, contributed by Sam Bishop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45780 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 19:28:50 +00:00
Owen Anderson
864e3a3762 StrongPHIElim: Now with even fewer trivial bugs! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45775 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 10:41:39 +00:00
Owen Anderson
719fef648d Fix an infinite recursion bug in InsertCopies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45774 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 10:32:30 +00:00
Owen Anderson
cb7d949a19 Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45773 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 06:19:05 +00:00
Evan Cheng
92b7c1d94e Fix sse2.psrl.w and sse2.psrl.q definitions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45772 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 02:16:44 +00:00
Chris Lattner
03a1c7ae3d Fix llvm-ld -Xlinker, patch by Daniel Teske! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45770 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 01:01:17 +00:00
Chris Lattner
269f0595d6 add a testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45768 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 00:37:18 +00:00
Chris Lattner
f61b63ec5b add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45766 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-09 00:17:57 +00:00
Chris Lattner
07649d9265 Make load->store deletion a bit smarter. This allows us to compile this: 
void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45762 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 23:08:06 +00:00
Owen Anderson
0c5714bb99 Rename registers that do not need copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 21:54:52 +00:00
Duncan Sands
2815cbb9c7 Crashes llc when using Chris's new legalization logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45758 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 21:51:53 +00:00
Ted Kremenek
6632f95239 Added "getRoot()" to ImmutableMap. 
Made the ctor for ImmutableMap to construct a map from an AVL tree public.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45756 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 21:05:59 +00:00
Ted Kremenek
0a8cabb178 Fixed 80 col. violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45752 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 19:38:55 +00:00
Chris Lattner
dcc8b4f5d3 add a mayLoad property for machine instructions, a correlary to mayStore. 
This is currently not set by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45748 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 18:05:21 +00:00
Duncan Sands
e51775dc5e Use size_t to store Pos, avoid truncating value 
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45746 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 10:06:15 +00:00
Chris Lattner
f9d9e45225 Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45745 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 07:23:51 +00:00
Chris Lattner
4a83e963b3 add match support for casts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45744 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 07:02:44 +00:00
Chris Lattner
a4040e9a9f remove darwin/i386 t-t 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45743 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 06:52:51 +00:00
Chris Lattner
fe39edde27 Finally implement correct ordered comparisons for PPC, even though 
the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45742 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 06:46:30 +00:00
Chris Lattner
83d760ba8e Testcase for PR1721 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45739 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 05:16:29 +00:00
Owen Anderson
0d893b4038 Actually insert copies now! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45738 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 05:16:15 +00:00
Chris Lattner
4a6a6f21f3 Fix PR1797 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45736 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 04:26:20 +00:00
Evan Cheng
b353459d68 Minor fix to enable x86-64 pic jit (still fails for other reasons). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45734 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 02:07:10 +00:00
Evan Cheng
b1a9aec515 Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45733 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 02:06:11 +00:00
Bill Wendling
750ec00436 Silence warning about loss of precision. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45731 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 00:52:29 +00:00
Evan Cheng
325474e065 Only mark instructions that load a single value without extension as isSimpleLoad = 1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45727 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 23:56:57 +00:00
Chris Lattner
f7c8db9ab5 add a new bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45726 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 23:16:55 +00:00