Chris Lattner
a4b6082b7a
Add some random notes, not high-prio
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llvm-svn: 26052
2006-02-08 06:52:06 +00:00
Chris Lattner
881c8c12ff
Move emails from nate into public places
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llvm-svn: 26051
2006-02-08 06:43:51 +00:00
Chris Lattner
8359f9fbbb
Use EraseInstFromFunction in a few cases to put the uses of the removed
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instruction onto the worklist (in case they are now dead).
Add a really trivial local DSE implementation to help out bitfield code.
We now fold this:
struct S {
unsigned char a : 1, b : 1, c : 1, d : 2, e : 3;
S();
};
S::S() : a(0), b(0), c(1), d(0), e(6) {}
to this:
void %_ZN1SC1Ev(%struct.S* %this) {
entry:
%tmp.1 = getelementptr %struct.S* %this, int 0, uint 0
store ubyte 38, ubyte* %tmp.1
ret void
}
much earlier (in gccas instead of only in gccld after DSE runs).
llvm-svn: 26050
2006-02-08 03:25:32 +00:00
Chris Lattner
09ae00eba1
Implement some more interesting select sccp cases. This implements:
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test/Regression/Transforms/SCCP/select.ll
llvm-svn: 26049
2006-02-08 02:38:11 +00:00
Chris Lattner
50f604c041
Compile this:
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xori r6, r2, 1
rlwinm r6, r6, 0, 31, 31
cmpwi cr0, r6, 0
bne cr0, LBB1_3 ; endif
to this:
rlwinm r6, r2, 0, 31, 31
cmpwi cr0, r6, 0
beq cr0, LBB1_3 ; endif
llvm-svn: 26047
2006-02-08 02:13:15 +00:00
Chris Lattner
57aca014c2
Fix a problem in my patch yesterday, causing a miscompilation of 176.gcc
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llvm-svn: 26045
2006-02-08 01:20:23 +00:00
Evan Cheng
de20d3fb32
Fixed a local common symbol bug.
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llvm-svn: 26044
2006-02-07 23:32:58 +00:00
Evan Cheng
a505719b8a
For ELF, .comm takes alignment value as the optional 3rd argument. It must be
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specified in bytes.
llvm-svn: 26043
2006-02-07 21:54:08 +00:00
Chris Lattner
abaa15898f
Implement getConstraintType for PPC.
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llvm-svn: 26042
2006-02-07 20:16:30 +00:00
Chris Lattner
a3f2d4c4f2
Fix Transforms/InstCombine/2006-02-07-SextZextCrash.ll
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llvm-svn: 26040
2006-02-07 19:07:40 +00:00
Evan Cheng
15369d0b89
Darwin ABI issues: weak, linkonce, etc. dynamic-no-pic support is complete.
...
Also fixed a function stub bug. Added weak and linkonce support for
x86 Linux.
llvm-svn: 26038
2006-02-07 08:38:37 +00:00
Evan Cheng
a7d31e53e8
Remind myself to add PIC and static asm printer support.
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llvm-svn: 26037
2006-02-07 08:35:44 +00:00
Chris Lattner
9a35257363
Generalize MaskedValueIsZero into a ComputeMaskedNonZeroBits function, which
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is just as efficient as MVIZ and is also more general.
Fix a few minor bugs introduced in recent patches
llvm-svn: 26036
2006-02-07 08:05:22 +00:00
Chris Lattner
c1a185741c
Make MaskedValueIsZero take a uint64_t instead of a ConstantIntegral as a
...
mask. This allows the code to be simpler and more efficient.
Also, generalize some of the cases in MVIZ a bit, making it slightly more aggressive.
llvm-svn: 26035
2006-02-07 07:27:52 +00:00
Chris Lattner
6318e7b7b7
Use Type::getIntegralTypeMask() to simplify some code
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llvm-svn: 26034
2006-02-07 07:00:41 +00:00
Chris Lattner
a0d7868722
Implement the beginnings of a facility for simplifying expressions based on
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'demanded bits', inspired by Nate's work in the dag combiner. This isn't
complete, but needs to unrelated instcombiner changes to continue.
llvm-svn: 26033
2006-02-07 06:56:34 +00:00
Jeff Cohen
e66383eb06
The interpreter assumes that the caller of runFunction() must be lli, and
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therefore the function being called must be a main() returning an int. The
consequences when these assumptions are false are not good, so don't assume
them.
llvm-svn: 26031
2006-02-07 05:29:44 +00:00
Jeff Cohen
909ee648c7
Teach the interpreter to handle global variables that are added to a module after
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interpretation has begun. The JIT already handles this situation correctly, and
the interpreter can already handle new functions being added.
llvm-svn: 26030
2006-02-07 05:11:57 +00:00
Chris Lattner
50af3c6eb7
Add the simple PPC integer constraints
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llvm-svn: 26027
2006-02-07 00:47:13 +00:00
Chris Lattner
da4bd5c64e
Eliminate the printCallOperand method, using a 'call' modifier on
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printOperand instead.
llvm-svn: 26025
2006-02-06 23:41:19 +00:00
Chris Lattner
b6fae6bad7
Change prototype
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llvm-svn: 26022
2006-02-06 22:18:19 +00:00
Chris Lattner
35a536d1f4
Add support for modifier characters to operand printers
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llvm-svn: 26021
2006-02-06 22:17:23 +00:00
Jim Laskey
f36d437b39
Goodbye nasty macro.
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llvm-svn: 26019
2006-02-06 21:54:05 +00:00
Jim Laskey
0cfdd812d1
Edit requests from Sabre.
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llvm-svn: 26018
2006-02-06 19:12:02 +00:00
Andrew Lenharth
10a2391def
see what this allignment thing will do
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llvm-svn: 26017
2006-02-06 17:15:17 +00:00
Jim Laskey
e27947e8fb
Changing model for the construction of debug information.
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llvm-svn: 26016
2006-02-06 15:33:21 +00:00
Jim Laskey
62908083eb
We seem to have settled to __DWARF for section name.
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llvm-svn: 26015
2006-02-06 14:16:15 +00:00
Evan Cheng
080996281c
- Update load folding checks to match those auto-generated by tblgen.
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- Manually select SDOperand's returned by TryFoldLoad which make up the
load address.
llvm-svn: 26012
2006-02-06 06:02:33 +00:00
Evan Cheng
9fb67ea859
Complex pattern isel code shouldn't select nodes.
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llvm-svn: 26010
2006-02-05 08:45:01 +00:00
Chris Lattner
c0012f8818
Fix the Sparc backend with Evan's recent tblgen changes
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llvm-svn: 26009
2006-02-05 08:35:50 +00:00
Chris Lattner
da908d19fd
This xform isn't safe
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llvm-svn: 26007
2006-02-05 08:26:16 +00:00
Nate Begeman
2fe9dfedf0
Back out previous commit, it isn't safe.
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llvm-svn: 26006
2006-02-05 08:23:00 +00:00
Nate Begeman
c0e2bb488a
fold c1 << (x + c2) into (c1 << c2) << x. fix a warning.
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llvm-svn: 26005
2006-02-05 08:07:24 +00:00
Chris Lattner
9898b81e27
some stuff is done
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llvm-svn: 26004
2006-02-05 07:54:37 +00:00
Chris Lattner
807c68d572
Turn A % (C << N), where C is 2^k, into A & ((C << N)-1) [urem only].
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Turn A / (C1 << N), where C1 is "1<<C2" into A >> (N+C2) [udiv only].
Tested with: rem.ll:test5, div.ll:test10
llvm-svn: 26003
2006-02-05 07:54:04 +00:00
Nate Begeman
c93c3d11d6
Handle urem by shifted powers of 2.
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llvm-svn: 26001
2006-02-05 07:36:48 +00:00
Nate Begeman
0291708a49
handle combining A / (B << N) into A >>u (log2(B)+N) when B is a power of 2
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llvm-svn: 26000
2006-02-05 07:20:23 +00:00
Evan Cheng
973e4051d6
Use SelectRoot() as the entry to any tblgen based isel.
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llvm-svn: 25998
2006-02-05 06:51:51 +00:00
Evan Cheng
fb902782e8
Use SelectRoot() as entry of any tblgen based isel.
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llvm-svn: 25997
2006-02-05 06:46:41 +00:00
Chris Lattner
1d15bef6ac
Remove the SparcV8 backend. It has been renamed to be the Sparc backend.
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llvm-svn: 25992
2006-02-05 06:33:29 +00:00
Chris Lattner
1e16099e9f
remove V8 reference
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llvm-svn: 25991
2006-02-05 06:32:59 +00:00
Evan Cheng
d46a7fc65a
* Added SDNode::isOnlyUse().
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* Fix hasNUsesOfValue(), it should be const.
llvm-svn: 25990
2006-02-05 06:29:23 +00:00
Chris Lattner
834685ef3a
Rename SPARC V8 target to be the LLVM SPARC target.
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llvm-svn: 25985
2006-02-05 05:50:24 +00:00
Chris Lattner
59378e7675
add a note
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llvm-svn: 25984
2006-02-05 05:27:35 +00:00
Evan Cheng
c23d3cd6c3
Re-commit the last bit of change that was backed out.
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llvm-svn: 25983
2006-02-05 05:25:07 +00:00
Chris Lattner
4efafdb7f4
make sure that global doubles are aligned to 8 bytes
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llvm-svn: 25981
2006-02-05 01:46:49 +00:00
Chris Lattner
74fd4905bc
Use getPreferredAlignmentLog.
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llvm-svn: 25980
2006-02-05 01:45:04 +00:00
Chris Lattner
085a324bfc
Use the asmprinter to find out what the preferred alignment of a global is.
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This patch speeds up 172.mgrid from 31.81s to 11.39s on darwin/ppc.
Many many thanks to Nate for tracking down the root cause of the issue.
llvm-svn: 25979
2006-02-05 01:30:45 +00:00
Chris Lattner
d2c4e9151e
Implement the AsmPrinter::getPreferredAlignmentLog method.
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llvm-svn: 25978
2006-02-05 01:29:18 +00:00
Andrew Lenharth
b28db2290a
linkage fix for weak functions
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llvm-svn: 25976
2006-02-04 19:13:09 +00:00