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Author SHA1 Message Date
Chris Lattner
69a52155d2 Adjust to CopyFromReg changes, implement deletion of truncating/extending 
stores/loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19562 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:38:01 +00:00
Chris Lattner
7f2afac1dc Adjust to CopyFromREg changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19561 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:37:41 +00:00
Chris Lattner
60e4878f94 Change CopyFromReg to take and produce a chain node, allowing it to be used 
with physregs that are not live across the entire block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19560 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:37:20 +00:00
Chris Lattner
2ee743ff9b Start implementing truncating stores and extending loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19559 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:08:15 +00:00
Chris Lattner
1cff05c7c2 Start adding some new operators, give IMPLICIT_DEF a chain operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19558 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:07:46 +00:00
Chris Lattner
3c70764907 Fix Regression/CodeGen/PowerPC/2005-01-14-UndefLong.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19557 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 20:22:02 +00:00
Chris Lattner
2349ba939d New testcase, problem found by Rob. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19556 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 20:21:51 +00:00
Chris Lattner
fbd4de1d9b Fix: Regression/CodeGen/PowerPC/2005-01-14-SetSelectCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19555 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 19:31:00 +00:00
Chris Lattner
557671951f Testcase that crashes the PPC backend. Thanks to Rob for finding this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19554 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 19:30:42 +00:00
Chris Lattner
906ab50acf Fix some bugs in an xform added yesterday. This fixes Prolangs-C/allroots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19553 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 17:35:12 +00:00
Chris Lattner
6f7f02fdec Fix a compile crash on spiff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19552 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 17:17:59 +00:00
Reid Spencer
3ca6d8bf85 Allow the Echo and EchoCmd variables to be overridden. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19551 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 16:33:36 +00:00
Reid Spencer
bd02b0a915 Fix the path from ../lib/Debug to ../Debug/lib per changes to Makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19550 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 16:32:39 +00:00
Chris Lattner
8f1d6402ba Improve compatibility with acc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19549 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 15:54:24 +00:00
Chris Lattner
9a791eaf8f Make this compatible with the HP/intel compiler. Fix by Duraid, thanks! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19548 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 15:53:26 +00:00
Alkis Evlogimenos
ae192d3558 Correctly update configure to configure the llvm-java project 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19546 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 07:52:28 +00:00
Jeff Cohen
3bbbcc113b Fix and improve win32 path validation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19545 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 04:09:39 +00:00
Reid Spencer
62582720e6 Make asctime_r work for HP/UX. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19544 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 00:50:50 +00:00
Chris Lattner
68f6b8cba8 More testcases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19543 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 00:26:25 +00:00
Chris Lattner
4401c9cabe if two gep comparisons only differ by one index, compare that index directly. 
This allows us to better optimize begin() -> end() comparisons in common cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19542 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 00:20:05 +00:00
Chris Lattner
0b84c80c08 Do not overrun iterators. This fixes a 176.gcc crash 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19541 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 23:26:48 +00:00
Chris Lattner
79bda7fbe2 Add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19540 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 23:26:28 +00:00
Chris Lattner
195e9176af new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19539 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 23:26:14 +00:00
Chris Lattner
a44f4aeca7 Add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19538 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 22:58:50 +00:00
Chris Lattner
87875dac89 Turn select C, (X+Y), (X-Y) --> (X+(select C, Y, (-Y))). This occurs in 
the 'sim' program and probably elsewhere.  In sim, it comes up for cases
like this:

#define round(x) ((x)>0.0 ? (x)+0.5 : (x)-0.5)
double G;
void T(double X) { G = round(X); }

(it uses the round macro a lot).  This changes the LLVM code from:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %tmp.4 = add double %X, 5.000000e-01            ; <double> [#uses=1]
        %tmp.6 = sub double %X, 5.000000e-01            ; <double> [#uses=1]
        %mem_tmp.0 = select bool %tmp.1, double %tmp.4, double %tmp.6
        store double %mem_tmp.0, double* %G

to:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %mem_tmp.0.p = select bool %tmp.1, double 5.000000e-01, double -5.000000e-01
        %mem_tmp.0 = add double %mem_tmp.0.p, %X
        store double %mem_tmp.0, double* %G
        ret void


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19537 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 22:52:24 +00:00
Chris Lattner
e9d782b7be Implement an optimization for == and != comparisons like this: 
_Bool test2(int X, int Y) {
  return &arr[X][Y] == arr;
}

instead of generating this:

bool %test2(int %X, int %Y) {
        %tmp.3.idx = mul int %X, 160            ; <int> [#uses=1]
        %tmp.3.idx1 = shl int %Y, ubyte 2               ; <int> [#uses=1]
        %tmp.3.offs2 = sub int 0, %tmp.3.idx            ; <int> [#uses=1]
        %tmp.7 = seteq int %tmp.3.idx1, %tmp.3.offs2            ; <bool> [#uses=1]
        ret bool %tmp.7
}


generate this:

bool %test2(int %X, int %Y) {
        seteq int %X, 0         ; <bool>:0 [#uses=1]
        seteq int %Y, 0         ; <bool>:1 [#uses=1]
        %tmp.7 = and bool %0, %1                ; <bool> [#uses=1]
        ret bool %tmp.7
}

This idiom occurs in C++ programs when iterating from begin() to end(),
in a vector or array.  For example, we now compile this:

void test(int X, int Y) {
  for (int *i = arr; i != arr+100; ++i)
    foo(*i);
}

to this:

no_exit:                ; preds = %entry, %no_exit
	...
        %exitcond = seteq uint %indvar.next, 100                ; <bool> [#uses=1]
        br bool %exitcond, label %return, label %no_exit



instead of this:

no_exit:                ; preds = %entry, %no_exit
	...
        %inc5 = getelementptr [100 x [40 x int]]* %arr, int 0, int 0, int %inc.rec              ; <int*> [#uses=1]
        %tmp.8 = seteq int* %inc5, getelementptr ([100 x [40 x int]]* %arr, int 0, int 100, int 0)              ; <bool> [#uses=1]
        %indvar.next = add uint %indvar, 1              ; <uint> [#uses=1]
        br bool %tmp.8, label %return, label %no_exit


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19536 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 22:25:21 +00:00
Chris Lattner
18c2f13e0f Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19535 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 20:50:02 +00:00
Chris Lattner
5bdf04cc8e Fix some bugs in code I didn't mean to check in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19534 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 20:40:58 +00:00
Chris Lattner
574da9ba0b Fix a crash compiling 129.compress 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19533 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 20:14:25 +00:00
Chris Lattner
1d50b7fa53 Codegen factor nodes more intelligently according to perceived register pressure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19532 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 19:56:00 +00:00
Chris Lattner
5a6c6d98d5 Don't forget the existing root. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19531 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 19:53:14 +00:00
Reid Spencer
39ce11b97b Update the documentation about -enable-llcbeta vs. -enable-linscan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19530 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 18:02:40 +00:00
Chris Lattner
c35807155c Initial trivial (but stupid) codegen for this node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19529 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 18:01:36 +00:00
Chris Lattner
ddb870b065 Codegen independent ops as being independent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19528 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 17:59:43 +00:00
Chris Lattner
a385e9b20f Legalize new node, add assertion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19527 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 17:59:25 +00:00
Chris Lattner
282c5cae89 Print new node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19526 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 17:59:10 +00:00
Chris Lattner
8a496fcffd Add a new node type, add comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19525 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 17:58:35 +00:00
Reid Spencer
41c56c03f7 Turn on LOADABLE_MODULE so that profile.so can be loaded dynamically by 
the JIT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19524 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 16:53:05 +00:00
Reid Spencer
1492709177 Re-enable libprofile now that llvm-ar is working better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19523 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 16:51:19 +00:00
Chris Lattner
636e79a20f Add some really pedantic assertions to the load folding code. Fix a bunch 
of cases where we accidentally emitted a load folded once and unfolded
elsewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19522 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 05:53:16 +00:00
Chris Lattner
2f0ca79a75 Do not fold (zero_ext (sign_ext V)) -> (sign_ext V), they are not the same. 
This fixes llvm-test/SingleSource/Regression/C/casts.c


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19519 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:51:15 +00:00
Chris Lattner
a0bb692b27 We can only fold a load into an op if there is exactly one use of the value. 
Checking to see if the load has two uses is not equivalent, as the chain
value may have zero uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19518 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:38:26 +00:00
Chris Lattner
5c88456227 New method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19517 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:37:47 +00:00
Chris Lattner
b18a2f816c New method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19516 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:37:33 +00:00
Chris Lattner
2dad454af6 Fix sign extend to long. When coming from sbyte, we used to generate: 
movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $7, %edx

Now we generate:

        movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $31, %edx

Which is right.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19515 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:19:52 +00:00
Chris Lattner
9ffdfb6bae Update comments to indicate CopyFrom/ToReg take physregs as well as vregs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19514 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:11:36 +00:00
Chris Lattner
9bbd992eb1 Try both ways to fold an add together. This allows us to generate this code 
imul %EAX, %EAX, 400
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX + 4*%EDX]
        inc %EDX
        cmp %EDX, 100

instead of this:

        imul %EAX, %EAX, 400
        add %ECX, %EAX
        mov %EAX, %EDX
        shl %EAX, 2
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX]
        inc %EDX
        cmp %EDX, 100


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19513 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:08:53 +00:00
Reid Spencer
3bfbf4ea99 Shut up warnings with GCC 3.4.3 about uninitialized variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19512 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 14:53:45 +00:00
Chris Lattner
2b9378646d Fix a major miscompilation where we were overwriting the scale reg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19511 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 07:33:20 +00:00
Chris Lattner
48034fd9f1 Do not use the type of the RHS constant to determine the type of the operation. 
This fails for shifts because the constant is always 8 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19508 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 05:22:07 +00:00