3fc3148b85
When unswitching a trivial loop, do admit we are doing it! :)
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llvm-svn: 26102
2006-02-10 01:36:35 +00:00
ed7a67b0de
Implement unconditional unswitching of 'trivial' loops, those loops that contain
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branches in their entry block that control whether or not the loop is a noop or not.
llvm-svn: 26101
2006-02-10 01:24:09 +00:00
4f0e66df6a
Simplify control flow a bit, note that unswitch preserves canonical loop form
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llvm-svn: 26098
2006-02-09 22:15:42 +00:00
101e4b916a
Match tblgen change.
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llvm-svn: 26096
2006-02-09 22:12:53 +00:00
5940bc210e
Call InsertISelMapEntry rather than map insertion operator to prevent overly
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aggrssive inlining. This reduces Select_store frame size from 24k to 10k.
llvm-svn: 26095
2006-02-09 22:12:27 +00:00
a1ef3ec5b5
Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc
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problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).
llvm-svn: 26094
2006-02-09 22:11:03 +00:00
8976219850
Make the threshold a parameter
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llvm-svn: 26093
2006-02-09 20:15:48 +00:00
4c0bd5bcdf
Done
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llvm-svn: 26091
2006-02-09 20:00:19 +00:00
5259aa1c86
Enable LSR by default for SPARC: it is a clear win.
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llvm-svn: 26090
2006-02-09 19:59:55 +00:00
2826e0511b
Simplify the loop-unswitch pass, by not even trying to unswitch loops with
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uses of loop values outside the loop. We need loop-closed SSA form to do
this right, or to use SSA rewriting if we really care.
llvm-svn: 26089
2006-02-09 19:14:52 +00:00
24cd2fa269
Fix 80-column violations
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llvm-svn: 26088
2006-02-09 07:41:14 +00:00
4534dd59a3
Enhance MVIZ in three ways:
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1. Teach it new tricks: in particular how to propagate through signed shr and sexts.
2. Teach it to return a bitset of known-1 and known-0 bits, instead of just zero.
3. Teach instcombine (AND X, C) to fold when we know all C bits of X.
This implements Regression/Transforms/InstCombine/bittest.ll, and allows
future things to be simplified.
llvm-svn: 26087
2006-02-09 07:38:58 +00:00
11f380962b
new testcase
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llvm-svn: 26086
2006-02-09 07:38:30 +00:00
d1b82d8db0
Match getTargetNode() changes (now return SDNode* instead of SDOperand).
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llvm-svn: 26085
2006-02-09 07:17:49 +00:00
9ce762d51f
Match getTargetNode() changes (now returns SDNode* instead of SDOperand).
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llvm-svn: 26084
2006-02-09 07:16:09 +00:00
d3f1db93c1
More changes to reduce frame size.
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Move all getTargetNode() out of SelectionDAG.h into SelectionDAG.cpp. This
prevents them from being inlined.
Change getTargetNode() so they return SDNode * instead of SDOperand to prevent
copying. It should also help compilation speed.
llvm-svn: 26083
2006-02-09 07:15:23 +00:00
e19b89f59c
this apparently passes on linux
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llvm-svn: 26082
2006-02-09 07:12:13 +00:00
c75d5b093d
add an option to turn on LSR.
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llvm-svn: 26080
2006-02-09 05:06:36 +00:00
729ffe95c4
simplify this code now that each constant pool entry is not separately allocated
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llvm-svn: 26079
2006-02-09 04:49:59 +00:00
f6190821da
Adjust to MachineConstantPool interface change: instead of keeping a
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value/alignment pair for each constant, keep a value/offset pair.
llvm-svn: 26078
2006-02-09 04:46:04 +00:00
8bb44151e1
instead of keeping track of Constant/alignment pairs, actually compute the
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offset of each entry from the start of the constant pool.
llvm-svn: 26077
2006-02-09 04:44:32 +00:00
ba97264e72
rename fields of constant pool entries
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llvm-svn: 26076
2006-02-09 04:22:52 +00:00
1cd22199dd
Use a MachineConstantPoolEntry struct instead of a pair to hold
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constant pool entries.
llvm-svn: 26075
2006-02-09 04:21:49 +00:00
47f7319f00
Simplify code, alignment must be specified now.
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llvm-svn: 26074
2006-02-09 02:26:04 +00:00
0ece4214ad
Assert invariants
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llvm-svn: 26073
2006-02-09 02:25:42 +00:00
c360656c1d
Require an alignment.
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llvm-svn: 26072
2006-02-09 02:24:25 +00:00
4576bb74d5
Make MachineConstantPool entries alignments explicit
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llvm-svn: 26071
2006-02-09 02:23:13 +00:00
832d78d981
Always pass in an alignment.
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llvm-svn: 26070
2006-02-09 02:19:16 +00:00
d94a3d2c8a
provide an explicit alignment for cp entries
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llvm-svn: 26069
2006-02-09 02:15:30 +00:00
ea25aba382
Add a comment: value is log2
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llvm-svn: 26068
2006-02-09 02:10:15 +00:00
6dc90ca172
Change Select() from
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SDOperand Select(SDOperand N);
to
void Select(SDOperand &Result, SDOperand N);
llvm-svn: 26067
2006-02-09 00:37:58 +00:00
2e07d6370a
Darwin doesn't support #APP/#NO_APP
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llvm-svn: 26066
2006-02-08 23:42:22 +00:00
ed87dcd45f
Add support for assembler directives that wrap inline asm
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llvm-svn: 26065
2006-02-08 23:41:56 +00:00
26e385a623
Rename BSel -> PPCBSel for the benefit of doxygen users.
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Move the methods out of line.
Remove unused Debug.h stuff.
Teach getNumBytesForInstruction to know the size of an inline asm.
llvm-svn: 26064
2006-02-08 19:33:26 +00:00
15f9188d73
Disable this test for the time being as debug is brought up to speed.
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llvm-svn: 26063
2006-02-08 18:17:06 +00:00
b4fc050f0f
add a simple optimization
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llvm-svn: 26062
2006-02-08 17:47:22 +00:00
6f5a00fd68
Mention that delta can be used to reduce some Front-end problems.
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Patch by Marco Matthies, thanks!
llvm-svn: 26061
2006-02-08 17:01:37 +00:00
4999a5c0c7
Add SRoA to the lexicon. Patch by Marco Matthies!
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llvm-svn: 26060
2006-02-08 16:59:49 +00:00
df5ef770b6
Added options -cflag, -cxxflags, and -ldflags to override the default C
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compilation, C++ compilation, and linker options.
e.g. This is the options I use for testing on my x86 iMac:
nice ./NightlyTest.pl -release -cflags "-Os -DNDEBUG -fomit-frame-pointer" -cxxflags "-Os -DNDEBUG -finline-functions -felide-constructors -fomit-frame-pointer"
llvm-svn: 26057
2006-02-08 09:08:06 +00:00
ab2dc4d70d
Simplify some code, reducing calls to MaskedValueIsZero. Implement a minor
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optimization where we reduce the number of bits in AND masks when possible.
llvm-svn: 26056
2006-02-08 07:34:50 +00:00
0ba2808775
Remove -pedantic. It no longer works.
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llvm-svn: 26055
2006-02-08 07:28:22 +00:00
b7e074ab9b
more email -> README moving
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llvm-svn: 26054
2006-02-08 07:12:07 +00:00
f7b962d7d7
Emit the 'mr' pseudoop for easier reading.
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llvm-svn: 26053
2006-02-08 06:56:40 +00:00
45bb34b715
Add some random notes, not high-prio
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llvm-svn: 26052
2006-02-08 06:52:06 +00:00
b97142eec0
Move emails from nate into public places
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llvm-svn: 26051
2006-02-08 06:43:51 +00:00
5997cf9381
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
06a0ed1ee0
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
d82b2036e9
new testcase for more interesting select sccp cases
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llvm-svn: 26048
2006-02-08 02:37:40 +00:00
a10e23c19f
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
49c0457529
Add some happy helper methods.
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llvm-svn: 26046
2006-02-08 02:05:45 +00:00
Chris Lattner