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27041 Commits

Author SHA1 Message Date
Chris Lattner adcaf294d7 Move the Imp tblgen class from the X86 backend to common code. 
llvm-svn: 30907
 2006-10-12 17:49:27 +00:00
Chris Lattner c040e53372 restore my previous patch, now that the X86 backend bug has been fixed: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061009/038518.html

llvm-svn: 30906
 2006-10-12 17:45:38 +00:00
Chris Lattner b5cda3daa9 Mark ADJCALLSTACKUP/DOWN as clobbering ESP so that virtregmap will notice 
that it can't assume ESP is unmodified across the instrs.

llvm-svn: 30905
 2006-10-12 17:42:56 +00:00
Jim Laskey df2ccc395e D'oh - need to use the rigth kind of store. 
llvm-svn: 30903
 2006-10-12 15:22:24 +00:00
Evan Cheng c935741b1d Backing out Chris' last commit. It's breaking llvm-gcc bootstrapping. 
It's turning:
        movl -24(%ebp), %esp
        subl $16, %esp
        movl -24(%ebp), %ecx
into
        movl -24(%ebp), %esp
        subl $16, %esp
        movl %esp, (%esp)

llvm-svn: 30902
 2006-10-12 08:00:47 +00:00
Chris Lattner 40ec2bebf9 fix compilation failure of smg2000 
llvm-svn: 30900
 2006-10-12 03:55:48 +00:00
Chris Lattner 86a012ab61 If we see a load from a stack slot into a physreg, consider it as providing 
the stack slot.  This fixes PR943.

llvm-svn: 30898
 2006-10-12 02:34:07 +00:00
Evan Cheng d7125583f7 Prior load folding check on chain operand was too strict. It requires the 
chain operand to point to the load being folded. Now we relax this, traversing
up the chain, if it doesn't reach the load, then it's ok. We will create a
TokenFactor (of all the chain operands and the load's chain) to capture all
the control flow dependencies.

llvm-svn: 30897
 2006-10-12 02:08:53 +00:00
Nick Lewycky 77e030bca9 Replace custom dispatch code with two uses of InstVisitor. Improves 
compile-time performance.

llvm-svn: 30896
 2006-10-12 02:02:44 +00:00
Evan Cheng e415f196a3 Update tests. 
llvm-svn: 30895
 2006-10-12 01:42:03 +00:00
Chris Lattner d5fcfaa6da Fold "zero extending vector loads" now that evan added the chain manip stuff. 
This compiles both tests in X86/vec_ss_load_fold.ll into:

_test1:
        movss 4(%esp), %xmm0
        subss LCPI1_0, %xmm0
        mulss LCPI1_1, %xmm0
        minss LCPI1_2, %xmm0
        xorps %xmm1, %xmm1
        maxss %xmm1, %xmm0
        cvttss2si %xmm0, %eax
        andl $65535, %eax
        ret

instead of:

_test1:
        movss LCPI1_0, %xmm0
        movss 4(%esp), %xmm1
        subss %xmm0, %xmm1
        movss LCPI1_1, %xmm0
        mulss %xmm0, %xmm1
        movss LCPI1_2, %xmm0
        minss %xmm0, %xmm1
        xorps %xmm0, %xmm0
        maxss %xmm0, %xmm1
        cvttss2si %xmm1, %eax
        andl $65535, %eax
        ret

llvm-svn: 30894
 2006-10-11 22:09:58 +00:00
Chris Lattner 4b77688d14 new testcase 
llvm-svn: 30893
 2006-10-11 22:07:38 +00:00
Evan Cheng 4090dc4703 ComplexPatterns sse_load_f32 and sse_load_f64 returns in / out chain operands. 
llvm-svn: 30892
 2006-10-11 21:06:01 +00:00
Evan Cheng 577ef7694e Add properties to ComplexPattern. 
llvm-svn: 30891
 2006-10-11 21:03:53 +00:00
Evan Cheng 2022c79d7f Added properties such as SDNPHasChain to ComplexPattern. 
llvm-svn: 30890
 2006-10-11 21:02:01 +00:00
Jim Laskey a13b9c7aa4 Alias analysis of TRUNCSTORE. 
llvm-svn: 30889
 2006-10-11 18:55:16 +00:00
Chris Lattner c52dab5894 regenerate 
llvm-svn: 30888
 2006-10-11 18:13:09 +00:00
Chris Lattner 9d9de698b5 Add support for let expressions around an mdef. This implements a new part 
of Regression/TableGen/MultiClass.td.

llvm-svn: 30887
 2006-10-11 18:12:44 +00:00
Chris Lattner ddf7347283 add test for mdef in a let 
llvm-svn: 30886
 2006-10-11 18:12:14 +00:00
Bill Wendling f21825f55a Clean-up of formatting and spelling. 
llvm-svn: 30885
 2006-10-11 18:00:22 +00:00
Jim Laskey 6a4c6d3a7a Typo 
llvm-svn: 30884
 2006-10-11 17:52:19 +00:00
Jim Laskey 0f7c328ae7 Handle aliasing of loadext. 
llvm-svn: 30883
 2006-10-11 17:47:52 +00:00
Jim Laskey 5684eda9e8 Explict processor. 
llvm-svn: 30882
 2006-10-11 17:14:14 +00:00
Andrew Lenharth fa8cbfd8e8 Reduce the amount of state in the lowering code and drop old pattern ISel functions 
llvm-svn: 30881
 2006-10-11 16:24:51 +00:00
Jim Laskey 08edf332ed Fix regression in combiner alias analysis. 
llvm-svn: 30880
 2006-10-11 13:47:09 +00:00
Jim Laskey b41de440b5 Make sure combiner alias analysis does it's thing. 
llvm-svn: 30879
 2006-10-11 13:42:49 +00:00
Evan Cheng d35734bd1f Naming consistency. 
llvm-svn: 30878
 2006-10-11 07:10:22 +00:00
Evan Cheng ac72dc81f4 Test case for the recently fixed FindModifiedNodeSlot bug. 
llvm-svn: 30877
 2006-10-11 07:01:37 +00:00
Bill Wendling 34ab06769d Put code example inside of "doc_code" divisions. 
llvm-svn: 30876
 2006-10-11 06:30:10 +00:00
Chris Lattner 6487854b3f Use cute tblgen tricks to make zap handling more powerful. Specifically, 
when the dag combiner simplifies an and mask, notice this and allow those bits
to be missing from the zap mask.

This compiles Alpha/zapnot4.ll into:

        sll $16,3,$0
        zapnot $0,3,$0
        ret $31,($26),1

instead of:

        ldah $0,1($31)
        lda $0,-8($0)
        sll $16,3,$1
        and $1,$0,$0
        ret $31,($26),1

It would be *really* nice to replace the hunk of code in the
AlphaISelDAGToDAG.cpp file that matches (and (srl (x, C), c2) into
(SRL (ZAPNOTi)) with a similar pattern, but I've spent enough time poking
at alpha.  Make andrew will do this.

llvm-svn: 30875
 2006-10-11 05:13:56 +00:00
Chris Lattner a821fe2da1 new testcase, this should turn into zap 
llvm-svn: 30874
 2006-10-11 05:10:19 +00:00
Andrew Lenharth a6bbf33cbf Jimptables working again on alpha. 
As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873
 2006-10-11 04:29:42 +00:00
Chris Lattner 9f86f7c2ab Remove dead/redundant instructions. These are handled by ZAPNOTi 
llvm-svn: 30872
 2006-10-11 04:12:39 +00:00
Chris Lattner f405928e86 Special case tblgen generated code for patterns like (and X, 255) or (or X, 42). 
The dag/inst combiners often 'simplify' the masked value based on whether
or not the bits are live or known zero/one.  This is good and dandy, but
often causes special case patterns to fail, such as alpha's CMPBGE pattern,
which looks like "(set GPRC:$RC, (setuge (and GPRC:$RA, 255), (and GPRC:$RB, 255)))".
Here the pattern for (and X, 255) should match actual dags like (and X, 254) if
the dag combiner proved that the missing bits are already zero (one for 'or').

For CodeGen/Alpha/cmpbge.ll:test2 for example, this results in:

        sll $16,1,$0
        cmpbge $0,$17,$0
        ret $31,($26),1

instead of:

        sll $16,1,$0
        and $0,254,$0
        and $17,255,$1
        cmpule $1,$0,$0
        ret $31,($26),1

... and requires no target-specific code.

llvm-svn: 30871
 2006-10-11 04:05:55 +00:00
Chris Lattner ee0435680b Both of these functions should turn into cmpbge instructions, even though 
the second has an and of 254 not 255.

llvm-svn: 30870
 2006-10-11 03:59:48 +00:00
Chris Lattner 6df349676e add two helper methods. 
llvm-svn: 30869
 2006-10-11 03:58:02 +00:00
Chris Lattner 66fbbca1e7 Split some code out into a new method. The generated code is exactly 
identical, this is just a refactoring.

llvm-svn: 30868
 2006-10-11 03:35:34 +00:00
Andrew Lenharth 4a57e2a6ed This entry is done. switched to the gcc way of doing things. 
llvm-svn: 30867
 2006-10-11 01:48:03 +00:00
Evan Cheng 2da4671e05 FindModifiedNodeSlot needs to add LoadSDNode ivars to create proper SelectionDAGCSEMap ID. 
llvm-svn: 30866
 2006-10-11 01:47:58 +00:00
Chris Lattner 291a868823 new testcase for zap generation, from the alpha readme 
llvm-svn: 30865
 2006-10-11 01:47:08 +00:00
Chris Lattner 3d74556d74 This has apparently been fixed 
llvm-svn: 30864
 2006-10-11 01:44:46 +00:00
Chris Lattner 8adfe927bb Make the bugpoint reduction heuristics more effective. Patch submitted by 
Domagoj Babic, thanks!

llvm-svn: 30863
 2006-10-10 21:42:25 +00:00
Rafael Espindola 8429e1f6c3 uint <-> double conversion 
llvm-svn: 30862
 2006-10-10 20:38:57 +00:00
Evan Cheng 7994aec7b5 Also update getNodeLabel for LoadSDNode. 
llvm-svn: 30861
 2006-10-10 20:11:26 +00:00
Evan Cheng fe858538c0 SDNode::dump should also print out extension type and VT. 
llvm-svn: 30860
 2006-10-10 20:05:10 +00:00
Rafael Espindola b5f1ff336a add fp sub 
llvm-svn: 30859
 2006-10-10 19:35:01 +00:00
Rafael Espindola 57d109fb08 add double <-> int conversion 
llvm-svn: 30858
 2006-10-10 18:55:14 +00:00
Chris Lattner 8438429c96 Fix another bug in extload promotion. 
llvm-svn: 30857
 2006-10-10 18:54:19 +00:00
Rafael Espindola d1a4ea41c9 compare doubles 
llvm-svn: 30856
 2006-10-10 16:33:47 +00:00
Rafael Espindola 639450ea83 add some tests for floating point compare 
llvm-svn: 30855
 2006-10-10 14:26:06 +00:00