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Author SHA1 Message Date
Chris Lattner
68d5ff2b83 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26087 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:38:58 +00:00
Chris Lattner
12f7de8222 new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26086 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:38:30 +00:00
Evan Cheng
7e9b26fc73 Match getTargetNode() changes (now return SDNode* instead of SDOperand). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26085 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:17:49 +00:00
Evan Cheng
d7805a741d Match getTargetNode() changes (now returns SDNode* instead of SDOperand). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26084 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:16:09 +00:00
Evan Cheng
6ae46c4c87 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26083 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:15:23 +00:00
Chris Lattner
2d99c81ff0 this apparently passes on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26082 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 07:12:13 +00:00
Chris Lattner
9413678f91 add an option to turn on LSR. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26080 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 05:06:36 +00:00
Chris Lattner
239862ce99 simplify this code now that each constant pool entry is not separately allocated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26079 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:49:59 +00:00
Chris Lattner
3029f92051 Adjust to MachineConstantPool interface change: instead of keeping a 
value/alignment pair for each constant, keep a value/offset pair.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26078 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:46:04 +00:00
Chris Lattner
04a0f60b23 instead of keeping track of Constant/alignment pairs, actually compute the 
offset of each entry from the start of the constant pool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26077 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:44:32 +00:00
Chris Lattner
fa77d43ba1 rename fields of constant pool entries 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26076 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:22:52 +00:00
Chris Lattner
69a9563969 Use a MachineConstantPoolEntry struct instead of a pair to hold 
constant pool entries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26075 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 04:21:49 +00:00
Chris Lattner
74b7d27ab1 Simplify code, alignment must be specified now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26074 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:26:04 +00:00
Chris Lattner
e7a1e2152c Assert invariants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26073 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:25:42 +00:00
Chris Lattner
c1f523dedd Require an alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26072 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:24:25 +00:00
Chris Lattner
948d9668a7 Make MachineConstantPool entries alignments explicit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26071 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:23:13 +00:00
Chris Lattner
5ac38d147b Always pass in an alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26070 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:19:16 +00:00
Chris Lattner
23c574a841 provide an explicit alignment for cp entries 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26069 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:15:30 +00:00
Chris Lattner
ef3640aded Add a comment: value is log2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26068 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 02:10:15 +00:00
Evan Cheng
34167215a8 Change Select() from 
SDOperand Select(SDOperand N);
to
void Select(SDOperand &Result, SDOperand N);


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26067 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-09 00:37:58 +00:00
Chris Lattner
418caa1356 Darwin doesn't support #APP/#NO_APP 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26066 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 23:42:22 +00:00
Chris Lattner
d6c65ea924 Add support for assembler directives that wrap inline asm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26065 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 23:41:56 +00:00
Chris Lattner
6f4a072e1f 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26064 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 19:33:26 +00:00
Jim Laskey
e35eed2944 Disable this test for the time being as debug is brought up to speed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26063 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 18:17:06 +00:00
Chris Lattner
dba382b16a add a simple optimization 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26062 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 17:47:22 +00:00
Chris Lattner
7e8443fd5a Mention that delta can be used to reduce some Front-end problems. 
Patch by Marco Matthies, thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26061 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 17:01:37 +00:00
Chris Lattner
ed51a0fb92 Add SRoA to the lexicon. Patch by Marco Matthies! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26060 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 16:59:49 +00:00
Evan Cheng
3468864f08 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"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26057 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 09:08:06 +00:00
Chris Lattner
7560c3af83 Simplify some code, reducing calls to MaskedValueIsZero. Implement a minor 
optimization where we reduce the number of bits in AND masks when possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26056 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 07:34:50 +00:00
Evan Cheng
917707a73f Remove -pedantic. It no longer works. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26055 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 07:28:22 +00:00
Chris Lattner
cb298907ab more email -> README moving 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26054 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 07:12:07 +00:00
Chris Lattner
4d73a5a204 Emit the 'mr' pseudoop for easier reading. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26053 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 06:56:40 +00:00
Chris Lattner
8f77b73430 Add some random notes, not high-prio 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26052 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 06:52:06 +00:00
Chris Lattner
8d3f490991 Move emails from nate into public places 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26051 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 06:43:51 +00:00
Chris Lattner
9ca96410fc 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26050 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 03:25:32 +00:00
Chris Lattner
fe243ebb64 Implement some more interesting select sccp cases. This implements: 
test/Regression/Transforms/SCCP/select.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26049 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 02:38:11 +00:00
Chris Lattner
d27460f291 new testcase for more interesting select sccp cases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26048 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 02:37:40 +00:00
Chris Lattner
3391bcd434 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26047 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 02:13:15 +00:00
Chris Lattner
5819342732 Add some happy helper methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26046 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 02:05:45 +00:00
Chris Lattner
62d1ade893 Fix a problem in my patch yesterday, causing a miscompilation of 176.gcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26045 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-08 01:20:23 +00:00
Evan Cheng
5ada370f42 Fixed a local common symbol bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26044 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 23:32:58 +00:00
Evan Cheng
315421e77c For ELF, .comm takes alignment value as the optional 3rd argument. It must be 
specified in bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26043 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 21:54:08 +00:00
Chris Lattner
ad3bc8d8ad Implement getConstraintType for PPC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26042 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 20:16:30 +00:00
Chris Lattner
eac707f702 getConstraintType should be virtual. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26041 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 20:13:44 +00:00
Chris Lattner
d89d888cc5 Fix Transforms/InstCombine/2006-02-07-SextZextCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26040 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 19:07:40 +00:00
Chris Lattner
78ee0added new testcase that caused instcombine to crash on 176.gcc last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26039 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 19:07:25 +00:00
Evan Cheng
2338c5cb0e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26038 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 08:38:37 +00:00
Evan Cheng
183fff997c Remind myself to add PIC and static asm printer support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26037 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 08:35:44 +00:00
Chris Lattner
74c51a0ff2 Generalize MaskedValueIsZero into a ComputeMaskedNonZeroBits function, which 
is just as efficient as MVIZ and is also more general.

Fix a few minor bugs introduced in recent patches


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26036 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 08:05:22 +00:00
Chris Lattner
3bedbd9d71 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26035 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-07 07:27:52 +00:00