Reid Spencer
4e90250e81
Make asctime_r work for HP/UX.
...
llvm-svn: 19544
2005-01-14 00:50:50 +00:00
Chris Lattner
9add8dfd15
More testcases
...
llvm-svn: 19543
2005-01-14 00:26:25 +00:00
Chris Lattner
6b519e3314
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.
llvm-svn: 19542
2005-01-14 00:20:05 +00:00
Chris Lattner
283b7d9809
Do not overrun iterators. This fixes a 176.gcc crash
...
llvm-svn: 19541
2005-01-13 23:26:48 +00:00
Chris Lattner
eff86ebbc3
Add a method
...
llvm-svn: 19540
2005-01-13 23:26:28 +00:00
Chris Lattner
b3462cf8d5
new testcase
...
llvm-svn: 19539
2005-01-13 23:26:14 +00:00
Chris Lattner
c6f23adb2a
Add a method
...
llvm-svn: 19538
2005-01-13 22:58:50 +00:00
Chris Lattner
b3dfd0aecd
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
llvm-svn: 19537
2005-01-13 22:52:24 +00:00
Chris Lattner
e59c6d1cbe
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
llvm-svn: 19536
2005-01-13 22:25:21 +00:00
Chris Lattner
7a8788c9ac
Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode.
...
llvm-svn: 19535
2005-01-13 20:50:02 +00:00
Chris Lattner
ee469241c3
Fix some bugs in code I didn't mean to check in.
...
llvm-svn: 19534
2005-01-13 20:40:58 +00:00
Chris Lattner
aebad4db9a
Fix a crash compiling 129.compress
...
llvm-svn: 19533
2005-01-13 20:14:25 +00:00
Chris Lattner
fce6a5439d
Codegen factor nodes more intelligently according to perceived register pressure.
...
llvm-svn: 19532
2005-01-13 19:56:00 +00:00
Chris Lattner
9cc534f2dc
Don't forget the existing root.
...
llvm-svn: 19531
2005-01-13 19:53:14 +00:00
Reid Spencer
7be21b0d7d
Update the documentation about -enable-llcbeta vs. -enable-linscan
...
llvm-svn: 19530
2005-01-13 18:02:40 +00:00
Chris Lattner
cb4359465a
Initial trivial (but stupid) codegen for this node.
...
llvm-svn: 19529
2005-01-13 18:01:36 +00:00
Chris Lattner
160fdb384b
Codegen independent ops as being independent.
...
llvm-svn: 19528
2005-01-13 17:59:43 +00:00
Chris Lattner
37a5de6eb0
Legalize new node, add assertion.
...
llvm-svn: 19527
2005-01-13 17:59:25 +00:00
Chris Lattner
86b19c5605
Print new node.
...
llvm-svn: 19526
2005-01-13 17:59:10 +00:00
Chris Lattner
000509e7b0
Add a new node type, add comments.
...
llvm-svn: 19525
2005-01-13 17:58:35 +00:00
Reid Spencer
d5bf5709c4
Turn on LOADABLE_MODULE so that profile.so can be loaded dynamically by
...
the JIT.
llvm-svn: 19524
2005-01-13 16:53:05 +00:00
Reid Spencer
55e707feb0
Re-enable libprofile now that llvm-ar is working better.
...
llvm-svn: 19523
2005-01-13 16:51:19 +00:00
Chris Lattner
9a70166615
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.
llvm-svn: 19522
2005-01-13 05:53:16 +00:00
Chris Lattner
93cb0148f8
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
llvm-svn: 19519
2005-01-12 18:51:15 +00:00
Chris Lattner
2ab70aafe0
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.
llvm-svn: 19518
2005-01-12 18:38:26 +00:00
Chris Lattner
e97b0e1358
New method
...
llvm-svn: 19517
2005-01-12 18:37:47 +00:00
Chris Lattner
92c07c0dba
New method.
...
llvm-svn: 19516
2005-01-12 18:37:33 +00:00
Chris Lattner
1b3b24f116
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.
llvm-svn: 19515
2005-01-12 18:19:52 +00:00
Chris Lattner
f01a5206ea
Update comments to indicate CopyFrom/ToReg take physregs as well as vregs.
...
llvm-svn: 19514
2005-01-12 18:11:36 +00:00
Chris Lattner
4b03f0f99e
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
llvm-svn: 19513
2005-01-12 18:08:53 +00:00
Reid Spencer
c8c50250a1
Shut up warnings with GCC 3.4.3 about uninitialized variables.
...
llvm-svn: 19512
2005-01-12 14:53:45 +00:00
Chris Lattner
61c572eb7f
Fix a major miscompilation where we were overwriting the scale reg.
...
llvm-svn: 19511
2005-01-12 07:33:20 +00:00
Chris Lattner
5816f1a302
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.
llvm-svn: 19508
2005-01-12 05:22:07 +00:00
Chris Lattner
89d6b21ae6
Do not lose the offset from teh global when peephole optimizing instructions.
...
This fixes FreeBench/pcompress
llvm-svn: 19507
2005-01-12 05:17:28 +00:00
Chris Lattner
c9b64b9749
Silence VC++ warnings.
...
llvm-svn: 19506
2005-01-12 04:51:37 +00:00
Jeff Cohen
817a3c3ff9
Add new file to Visual Studio CodeGen project
...
llvm-svn: 19505
2005-01-12 04:32:42 +00:00
Jeff Cohen
614a5ec22a
Fix C++ more compilatiom errors
...
llvm-svn: 19504
2005-01-12 04:29:05 +00:00
Chris Lattner
5ef92f3a40
Fix a compile error with VC++, which things that static const arrays need
...
to be dynamically initialized. :(
llvm-svn: 19503
2005-01-12 04:23:22 +00:00
Chris Lattner
627c64e5e5
Fix a bug that caused us to crash on povray. We weren't emitting an FP_REG_KILL into a block that had a successor with a FP PHI node.
...
llvm-svn: 19502
2005-01-12 04:21:28 +00:00
Chris Lattner
a5f0ba59a0
Print a load of a null pointer (in intel mode) like this:
...
mov %AX, WORD PTR [0]
instead of like this:
mov %AX, WORD PTR []
llvm-svn: 19501
2005-01-12 04:07:11 +00:00
Chris Lattner
360988bae2
Print a load of a null pointer like this:
...
movw 0, %ax
instead of like this:
movw , %ax
llvm-svn: 19500
2005-01-12 04:05:19 +00:00
Chris Lattner
3c85c67c97
Fix a crash compiling povray on UINT_TO_FP from i16.
...
llvm-svn: 19499
2005-01-12 04:00:00 +00:00
Chris Lattner
e7945a2e2e
Add an option to view the selection dags as they are generated.
...
llvm-svn: 19498
2005-01-12 03:41:21 +00:00
Misha Brukman
a7ec30e0eb
Use and print out BuildStatus, we don't always have build errors.
...
llvm-svn: 19497
2005-01-12 03:31:38 +00:00
Chris Lattner
4e72a2a000
There are no [mem] op= reg instructions for FP, so remove their entries.
...
llvm-svn: 19496
2005-01-12 03:16:09 +00:00
Chris Lattner
00cb0ace9b
Fix a bug where we didn't insert FP_REG_KILL instructions into MBB's that
...
contain FP PHI nodes but no other FP defining instructions. This fixes
183.equake
llvm-svn: 19495
2005-01-12 02:57:10 +00:00
Chris Lattner
92166ed1df
Fold TRUNCATE (LOAD P) into a smaller load from P.
...
llvm-svn: 19494
2005-01-12 02:19:06 +00:00
Chris Lattner
258b23bd9d
Be more careful about order of arg evalution for CopyToReg nodes. This shrinks
...
256.bzip2 from 7142 to 7103 lines of .s file.
Second, add initial support for folding loads into compares, though this code
is dynamically dead for now. :(
llvm-svn: 19493
2005-01-12 02:02:48 +00:00
Chris Lattner
604416e8f4
Fold some more [mem] op= val operators. This allows us to things like this
...
several times in 256.bzip2:
mov %EAX, DWORD PTR [%ESP + 204]
- mov %EAX, DWORD PTR [%EAX]
- or %EAX, 2097152
- mov %ECX, DWORD PTR [%ESP + 204]
- mov DWORD PTR [%ECX], %EAX
+ or DWORD PTR [%EAX], 2097152
llvm-svn: 19492
2005-01-12 01:28:00 +00:00
Chris Lattner
e83ae1063f
Fold loads into sign/zero extends. instead of:
...
mov %AL, BYTE PTR [%EDX + l18_length_code]
movzx %EAX, %AL
Emit:
movzx %EAX, BYTE PTR [%EDX + l18_length_code]
llvm-svn: 19489
2005-01-11 23:33:00 +00:00