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22627 Commits

Author SHA1 Message Date
Chris Lattner 2826e0511b Simplify the loop-unswitch pass, by not even trying to unswitch loops with 
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
Chris Lattner 24cd2fa269 Fix 80-column violations 
llvm-svn: 26088
 2006-02-09 07:41:14 +00:00
Chris Lattner 4534dd59a3 Enhance MVIZ in three ways: 
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
Chris Lattner 11f380962b new testcase 
llvm-svn: 26086
 2006-02-09 07:38:30 +00:00
Evan Cheng d1b82d8db0 Match getTargetNode() changes (now return SDNode* instead of SDOperand). 
llvm-svn: 26085
 2006-02-09 07:17:49 +00:00
Evan Cheng 9ce762d51f Match getTargetNode() changes (now returns SDNode* instead of SDOperand). 
llvm-svn: 26084
 2006-02-09 07:16:09 +00:00
Evan Cheng d3f1db93c1 More changes to reduce frame size. 
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
Chris Lattner e19b89f59c this apparently passes on linux 
llvm-svn: 26082
 2006-02-09 07:12:13 +00:00
Chris Lattner c75d5b093d add an option to turn on LSR. 
llvm-svn: 26080
 2006-02-09 05:06:36 +00:00
Chris Lattner 729ffe95c4 simplify this code now that each constant pool entry is not separately allocated 
llvm-svn: 26079
 2006-02-09 04:49:59 +00:00
Chris Lattner f6190821da Adjust to MachineConstantPool interface change: instead of keeping a 
value/alignment pair for each constant, keep a value/offset pair.

llvm-svn: 26078
 2006-02-09 04:46:04 +00:00
Chris Lattner 8bb44151e1 instead of keeping track of Constant/alignment pairs, actually compute the 
offset of each entry from the start of the constant pool.

llvm-svn: 26077
 2006-02-09 04:44:32 +00:00
Chris Lattner ba97264e72 rename fields of constant pool entries 
llvm-svn: 26076
 2006-02-09 04:22:52 +00:00
Chris Lattner 1cd22199dd Use a MachineConstantPoolEntry struct instead of a pair to hold 
constant pool entries.

llvm-svn: 26075
 2006-02-09 04:21:49 +00:00
Chris Lattner 47f7319f00 Simplify code, alignment must be specified now. 
llvm-svn: 26074
 2006-02-09 02:26:04 +00:00
Chris Lattner 0ece4214ad Assert invariants 
llvm-svn: 26073
 2006-02-09 02:25:42 +00:00
Chris Lattner c360656c1d Require an alignment. 
llvm-svn: 26072
 2006-02-09 02:24:25 +00:00
Chris Lattner 4576bb74d5 Make MachineConstantPool entries alignments explicit 
llvm-svn: 26071
 2006-02-09 02:23:13 +00:00
Chris Lattner 832d78d981 Always pass in an alignment. 
llvm-svn: 26070
 2006-02-09 02:19:16 +00:00
Chris Lattner d94a3d2c8a provide an explicit alignment for cp entries 
llvm-svn: 26069
 2006-02-09 02:15:30 +00:00
Chris Lattner ea25aba382 Add a comment: value is log2 
llvm-svn: 26068
 2006-02-09 02:10:15 +00:00
Evan Cheng 6dc90ca172 Change Select() from 
SDOperand Select(SDOperand N);
to
void Select(SDOperand &Result, SDOperand N);

llvm-svn: 26067
 2006-02-09 00:37:58 +00:00
Chris Lattner 2e07d6370a Darwin doesn't support #APP/#NO_APP 
llvm-svn: 26066
 2006-02-08 23:42:22 +00:00
Chris Lattner ed87dcd45f Add support for assembler directives that wrap inline asm 
llvm-svn: 26065
 2006-02-08 23:41:56 +00:00
Chris Lattner 26e385a623 Rename BSel -> PPCBSel for the benefit of doxygen users. 
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
Jim Laskey 15f9188d73 Disable this test for the time being as debug is brought up to speed. 
llvm-svn: 26063
 2006-02-08 18:17:06 +00:00
Chris Lattner b4fc050f0f add a simple optimization 
llvm-svn: 26062
 2006-02-08 17:47:22 +00:00
Chris Lattner 6f5a00fd68 Mention that delta can be used to reduce some Front-end problems. 
Patch by Marco Matthies, thanks!

llvm-svn: 26061
 2006-02-08 17:01:37 +00:00
Chris Lattner 4999a5c0c7 Add SRoA to the lexicon. Patch by Marco Matthies! 
llvm-svn: 26060
 2006-02-08 16:59:49 +00:00
Evan Cheng df5ef770b6 Added options -cflag, -cxxflags, and -ldflags to override the default C 
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
Chris Lattner ab2dc4d70d Simplify some code, reducing calls to MaskedValueIsZero. Implement a minor 
optimization where we reduce the number of bits in AND masks when possible.

llvm-svn: 26056
 2006-02-08 07:34:50 +00:00
Evan Cheng 0ba2808775 Remove -pedantic. It no longer works. 
llvm-svn: 26055
 2006-02-08 07:28:22 +00:00
Chris Lattner b7e074ab9b more email -> README moving 
llvm-svn: 26054
 2006-02-08 07:12:07 +00:00
Chris Lattner f7b962d7d7 Emit the 'mr' pseudoop for easier reading. 
llvm-svn: 26053
 2006-02-08 06:56:40 +00:00
Chris Lattner 45bb34b715 Add some random notes, not high-prio 
llvm-svn: 26052
 2006-02-08 06:52:06 +00:00
Chris Lattner b97142eec0 Move emails from nate into public places 
llvm-svn: 26051
 2006-02-08 06:43:51 +00:00
Chris Lattner 5997cf9381 Use EraseInstFromFunction in a few cases to put the uses of the removed 
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 06a0ed1ee0 Implement some more interesting select sccp cases. This implements: 
test/Regression/Transforms/SCCP/select.ll

llvm-svn: 26049
 2006-02-08 02:38:11 +00:00
Chris Lattner d82b2036e9 new testcase for more interesting select sccp cases 
llvm-svn: 26048
 2006-02-08 02:37:40 +00:00
Chris Lattner a10e23c19f Compile this: 
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 49c0457529 Add some happy helper methods. 
llvm-svn: 26046
 2006-02-08 02:05:45 +00:00
Chris Lattner ddba3289b5 Fix a problem in my patch yesterday, causing a miscompilation of 176.gcc 
llvm-svn: 26045
 2006-02-08 01:20:23 +00:00
Evan Cheng adeb8fb5a2 Fixed a local common symbol bug. 
llvm-svn: 26044
 2006-02-07 23:32:58 +00:00
Evan Cheng ec212fb66d For ELF, .comm takes alignment value as the optional 3rd argument. It must be 
specified in bytes.

llvm-svn: 26043
 2006-02-07 21:54:08 +00:00
Chris Lattner 203b2f1288 Implement getConstraintType for PPC. 
llvm-svn: 26042
 2006-02-07 20:16:30 +00:00
Chris Lattner 56a2621ef5 getConstraintType should be virtual. 
llvm-svn: 26041
 2006-02-07 20:13:44 +00:00
Chris Lattner 44314827d6 Fix Transforms/InstCombine/2006-02-07-SextZextCrash.ll 
llvm-svn: 26040
 2006-02-07 19:07:40 +00:00
Chris Lattner ee278d9417 new testcase that caused instcombine to crash on 176.gcc last night. 
llvm-svn: 26039
 2006-02-07 19:07:25 +00:00
Evan Cheng 5a76680de1 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 227e469c25 Remind myself to add PIC and static asm printer support. 
llvm-svn: 26037
 2006-02-07 08:35:44 +00:00