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7441e03b0b
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12734 Commits

Author SHA1 Message Date
Evan Cheng
7441e03b0b Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc 
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
Chris Lattner
19acace8c0 Make the threshold a parameter 
llvm-svn: 26093
 2006-02-09 20:15:48 +00:00
Chris Lattner
4e9d16a0ad Done 
llvm-svn: 26091
 2006-02-09 20:00:19 +00:00
Chris Lattner
5a10d24e67 Enable LSR by default for SPARC: it is a clear win. 
llvm-svn: 26090
 2006-02-09 19:59:55 +00:00
Chris Lattner
4ae405113a 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
08e2215a18 Fix 80-column violations 
llvm-svn: 26088
 2006-02-09 07:41:14 +00:00
Chris Lattner
dcb3481968 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
Evan Cheng
6bd0f9c4ba Match getTargetNode() changes (now return SDNode* instead of SDOperand). 
llvm-svn: 26085
 2006-02-09 07:17:49 +00:00
Evan Cheng
3486292b7d 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
8eae5f68d5 add an option to turn on LSR. 
llvm-svn: 26080
 2006-02-09 05:06:36 +00:00
Chris Lattner
e976315aec 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
c81f375f21 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
1111a4b76d rename fields of constant pool entries 
llvm-svn: 26076
 2006-02-09 04:22:52 +00:00
Chris Lattner
837a816470 Simplify code, alignment must be specified now. 
llvm-svn: 26074
 2006-02-09 02:26:04 +00:00
Chris Lattner
86d5e100d2 Make MachineConstantPool entries alignments explicit 
llvm-svn: 26071
 2006-02-09 02:23:13 +00:00
Chris Lattner
79b2108a41 Always pass in an alignment. 
llvm-svn: 26070
 2006-02-09 02:19:16 +00:00
Chris Lattner
3ff29575b8 provide an explicit alignment for cp entries 
llvm-svn: 26069
 2006-02-09 02:15:30 +00:00
Evan Cheng
521e5a1bfe 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
2e1a495967 Darwin doesn't support #APP/#NO_APP 
llvm-svn: 26066
 2006-02-08 23:42:22 +00:00
Chris Lattner
6556f15ad8 Add support for assembler directives that wrap inline asm 
llvm-svn: 26065
 2006-02-08 23:41:56 +00:00
Chris Lattner
47ef931412 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
Chris Lattner
9cc9988279 add a simple optimization 
llvm-svn: 26062
 2006-02-08 17:47:22 +00:00
Chris Lattner
f2caea42c9 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
Chris Lattner
560429667e more email -> README moving 
llvm-svn: 26054
 2006-02-08 07:12:07 +00:00
Chris Lattner
86d1dcf613 Emit the 'mr' pseudoop for easier reading. 
llvm-svn: 26053
 2006-02-08 06:56:40 +00:00
Chris Lattner
a4b6082b7a Add some random notes, not high-prio 
llvm-svn: 26052
 2006-02-08 06:52:06 +00:00
Chris Lattner
881c8c12ff Move emails from nate into public places 
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 
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: 
test/Regression/Transforms/SCCP/select.ll

llvm-svn: 26049
 2006-02-08 02:38:11 +00:00
Chris Lattner
50f604c041 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
57aca014c2 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
de20d3fb32 Fixed a local common symbol bug. 
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 
specified in bytes.

llvm-svn: 26043
 2006-02-07 21:54:08 +00:00
Chris Lattner
abaa15898f Implement getConstraintType for PPC. 
llvm-svn: 26042
 2006-02-07 20:16:30 +00:00
Chris Lattner
a3f2d4c4f2 Fix Transforms/InstCombine/2006-02-07-SextZextCrash.ll 
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. 
llvm-svn: 26037
 2006-02-07 08:35:44 +00:00
Chris Lattner
9a35257363 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

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 
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 
'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 
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 
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 
llvm-svn: 26027
 2006-02-07 00:47:13 +00:00
Chris Lattner
da4bd5c64e Eliminate the printCallOperand method, using a 'call' modifier on 
printOperand instead.

llvm-svn: 26025
 2006-02-06 23:41:19 +00:00
Chris Lattner
b6fae6bad7 Change prototype 
llvm-svn: 26022
 2006-02-06 22:18:19 +00:00
Chris Lattner
35a536d1f4 Add support for modifier characters to operand printers 
llvm-svn: 26021
 2006-02-06 22:17:23 +00:00
Jim Laskey
f36d437b39 Goodbye nasty macro. 
llvm-svn: 26019
 2006-02-06 21:54:05 +00:00
Jim Laskey
0cfdd812d1 Edit requests from Sabre. 
llvm-svn: 26018
 2006-02-06 19:12:02 +00:00
Andrew Lenharth
10a2391def see what this allignment thing will do 
llvm-svn: 26017
 2006-02-06 17:15:17 +00:00