17c7c030c2
fold things like a^b != c^a -> b != c. This implements InstCombine/xor.ll:test27
...
llvm-svn: 32893
2007-01-05 03:04:57 +00:00
23eb8ec78b
Compile X + ~X to -1. This implements Instcombine/add.ll:test34
...
llvm-svn: 32890
2007-01-05 02:17:46 +00:00
6ff3e73db6
Death to useless bitcast instructions!
...
llvm-svn: 32866
2007-01-04 05:23:51 +00:00
806adafd95
Enable a couple xforms for packed vectors (undef | v) -> -1 for packed.
...
llvm-svn: 32858
2007-01-04 02:12:40 +00:00
c4ba9c161b
Vectors are not supported by ConstantInt::getAllOnesValue.
...
llvm-svn: 32827
2007-01-03 00:11:03 +00:00
e8a74ee5ea
Fix a typo.
...
llvm-svn: 32803
2006-12-31 22:26:06 +00:00
c635f47d9a
For PR950:
...
This patch replaces signed integer types with signless ones:
1. [US]Byte -> Int8
2. [U]Short -> Int16
3. [U]Int -> Int32
4. [U]Long -> Int64.
5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion
and other methods related to signedness. In a few places this warranted
identifying the signedness information from other sources.
llvm-svn: 32785
2006-12-31 05:48:39 +00:00
193df25eb9
For PR1066:
...
Fix this by ensuring that a bitcast is inserted to do sign switching. This
is only temporarily needed as the merging of signed and unsigned is next
on the SignlessTypes plate.
llvm-svn: 32757
2006-12-24 00:40:59 +00:00
910f23f7d7
Shut up some compilers that can't accurately analyze variable usage
...
correctly and emit "may be used uninitialized" warnings.
llvm-svn: 32756
2006-12-23 19:17:57 +00:00
43c77d53ff
For PR1065:
...
Don't allow CmpInst instances to be processed in FoldSelectOpOp because
you can't easily swap their operands.
llvm-svn: 32753
2006-12-23 18:58:04 +00:00
266e42b312
For PR950:
...
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.
llvm-svn: 32751
2006-12-23 06:05:41 +00:00
f171af97d5
add a simple fast-path for dead allocas
...
llvm-svn: 32750
2006-12-22 23:14:42 +00:00
a276d0972c
Remove isSigned calls via foreknowledge of main's argument types.
...
llvm-svn: 32730
2006-12-21 07:49:49 +00:00
4720d4d9ef
Get rid of a useless if statement whose then and else blocks were identical.
...
llvm-svn: 32729
2006-12-21 07:15:54 +00:00
1847f6ddbd
handle undef values much more carefully: generalize the resolveundefbranches
...
code to handle instructions as well, so that we properly fold things like
X & undef -> 0.
This fixes Transforms/SCCP/2006-12-19-UndefBug.ll
llvm-svn: 32715
2006-12-20 06:21:33 +00:00
575d3218ab
switch statistics over to not use static ctors.
...
llvm-svn: 32709
2006-12-19 23:16:47 +00:00
1fa216f572
eliminate static ctor from example.
...
llvm-svn: 32696
2006-12-19 22:24:09 +00:00
40b29cac01
remove dead statistic
...
llvm-svn: 32695
2006-12-19 22:23:21 +00:00
45f966d80f
switch more statistics over to STATISTIC, eliminating static ctors. Also,
...
delete some dead ones.
llvm-svn: 32694
2006-12-19 22:17:40 +00:00
1631bcb1d4
Eliminate static ctors due to Statistic objects
...
llvm-svn: 32693
2006-12-19 22:09:18 +00:00
0e5255bdc6
Convert more Statistic's over to STATISTIC
...
llvm-svn: 32692
2006-12-19 21:49:03 +00:00
79a42ac941
Switch over Transforms/Scalar to use the STATISTIC macro. For each statistic
...
converted, we lose a static initializer. This also allows GCC to emit warnings
about unused statistics.
llvm-svn: 32690
2006-12-19 21:40:18 +00:00
668d90f289
Convert the last uses of CastInst::createInferredCast to a normal cast
...
creation. These changes are still temporary but at least this pushes
knowledge of signedness out closer to where it can be determined properly
and allows signedness to be removed from VMCore.
llvm-svn: 32654
2006-12-18 08:47:13 +00:00
b83593e3ea
Convert the last use of two-argument ConstantExpr::getCast into another
...
form so we can remove that method from ConstantExpr.
llvm-svn: 32652
2006-12-18 08:16:27 +00:00
a77f14265b
Added an automatic cast to "std::ostream*" etc. from OStream. We then can
...
rework the hacks that had us passing OStream in. We pass in std::ostream*
instead, check for null, and then dispatch to the correct print() method.
llvm-svn: 32636
2006-12-17 05:15:13 +00:00
fd5f03ec3f
when inserting a dummy argument to work-around the CBE not supporting
...
zero arg vararg functions, pass undef instead of 'int 0', which is cheaper.
llvm-svn: 32634
2006-12-16 21:21:53 +00:00
8f7b775bf4
re-enable a temporarily-reverted patch
...
llvm-svn: 32595
2006-12-15 07:32:38 +00:00
74a528b427
Fix a bug in EvaluateInDifferentType. The type of operand should not be
...
used to determine whether a ZExt or SExt cast is performed. Instead, pass
an "isSigned" bool to the function and determine its value from the opcode
of the cast involved.
Also, clean up some cruft from previous patches.
llvm-svn: 32548
2006-12-13 18:21:21 +00:00
2a499b0b6c
Implement review feedback. Most of this has to do with removing unnecessary
...
cast instructions. A few are bug fixes.
llvm-svn: 32544
2006-12-13 17:19:09 +00:00
612683b0d7
For mul transforms, when checking for a cast from bool as either operand,
...
make sure to also check that it is a zext from bool, not any other cast
operation type.
llvm-svn: 32539
2006-12-13 08:33:33 +00:00
799b5bfc71
Fix and/or/xor (cast A), (cast B) --> cast (and/or/xor A, B)
...
The cast patch introduced the possibility that the wrong cast opcode
could be used and that this transform could trigger on different kinds
of cast operations. This patch rectifies that.
llvm-svn: 32538
2006-12-13 08:27:15 +00:00
df1f19a8ef
Change the interface to SCEVExpander::InsertCastOfTo to take a cast opcode
...
so the decision of which opcode to use is pushed upward to the caller.
Adjust the callers to pass the expected opcode.
llvm-svn: 32535
2006-12-13 08:06:42 +00:00
a730cf80d7
Fix some casts. isdigit(c) returns 0 or 1, not 0 or -1
...
llvm-svn: 32534
2006-12-13 08:04:32 +00:00
7c1dff99dc
revert my recent int<->fp and vector union promotion changes, they expose
...
obscure bugs affecting the X86 code generator. I will reenable this
when fixed.
llvm-svn: 32524
2006-12-13 02:26:45 +00:00
bfe26ffcfc
Replace CastInst::createInferredCast calls with more accurate cast
...
creation calls.
llvm-svn: 32521
2006-12-13 00:50:17 +00:00
bb65ebf9a1
Replace inferred getCast(V,Ty) calls with more strict variants.
...
Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.
llvm-svn: 32514
2006-12-12 23:36:14 +00:00
2dc148e89d
this can be trunc or bitcast, per line 3092.
...
llvm-svn: 32487
2006-12-12 19:11:20 +00:00
ade1f6894d
Fix regression on 400.perlbench last night.
...
llvm-svn: 32486
2006-12-12 18:41:03 +00:00
13bc5d7b57
Fix numerous inferred casts.
...
llvm-svn: 32479
2006-12-12 09:18:51 +00:00
41cb269a2b
Fix the casting for the computation of the Malloc size.
...
llvm-svn: 32477
2006-12-12 09:17:08 +00:00
b341b0861d
Change inferred getCast into specific getCast. Passes all tests.
...
llvm-svn: 32469
2006-12-12 05:05:00 +00:00
6e5fe376ec
Patch for PR1045 and Transforms/ScalarRepl/2006-12-11-SROA-Crash.ll
...
llvm-svn: 32468
2006-12-12 04:24:41 +00:00
e810140c4b
trunc to integer, not to FP.
...
llvm-svn: 32426
2006-12-11 01:17:00 +00:00
23f4b68f7e
implement promotion of unions containing two packed types of the same width.
...
This implements Transforms/ScalarRepl/union-packed.ll
llvm-svn: 32422
2006-12-11 00:35:08 +00:00
216c3028e6
* Eliminate calls to CastInst::createInferredCast.
...
* Add support for promoting unions with fp values in them. This produces
our new int<->fp bitcast instructions, implementing
Transforms/ScalarRepl/union-fp-int.ll
As an example, this allows us to compile this:
union intfloat { int i; float f; };
float invsqrt(const float arg_x) {
union intfloat x = { .f = arg_x };
const float xhalf = arg_x * 0.5f;
x.i = 0x5f3759df - (x.i >> 1);
return x.f * (1.5f - xhalf * x.f * x.f);
}
into:
_invsqrt:
movss 4(%esp), %xmm0
movd %xmm0, %eax
sarl %eax
movl $1597463007, %ecx
subl %eax, %ecx
movd %ecx, %xmm1
mulss LCPI1_0, %xmm0
mulss %xmm1, %xmm0
movss LCPI1_1, %xmm2
mulss %xmm1, %xmm0
subss %xmm0, %xmm2
movl 8(%esp), %eax
mulss %xmm2, %xmm1
movss %xmm1, (%eax)
ret
instead of:
_invsqrt:
subl $4, %esp
movss 8(%esp), %xmm0
movss %xmm0, (%esp)
movl (%esp), %eax
movl $1597463007, %ecx
sarl %eax
subl %eax, %ecx
movl %ecx, (%esp)
mulss LCPI1_0, %xmm0
movss (%esp), %xmm1
mulss %xmm1, %xmm0
mulss %xmm1, %xmm0
movss LCPI1_1, %xmm2
subss %xmm0, %xmm2
mulss %xmm2, %xmm1
movl 12(%esp), %eax
movss %xmm1, (%eax)
addl $4, %esp
ret
llvm-svn: 32418
2006-12-10 23:56:50 +00:00
efe5c862f1
Incorporate any changes in the successor blocks into the result of
...
MarkAliveBlocks.
llvm-svn: 32375
2006-12-08 21:52:01 +00:00
9bfb1e1f29
What should be the last unnecessary <iostream>s in the library.
...
llvm-svn: 32333
2006-12-07 22:21:48 +00:00
22e978a736
Removing even more <iostream> includes.
...
llvm-svn: 32320
2006-12-07 20:04:42 +00:00
f3baad3ee1
Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are
...
now cerr, cout, and NullStream resp.
llvm-svn: 32298
2006-12-07 01:30:32 +00:00
4ae56f3086
Update ConstantIntegral Max/Min tests for new interface.
...
llvm-svn: 32288
2006-12-06 20:39:57 +00:00
f06bb658a8
add missing #include
...
llvm-svn: 32280
2006-12-06 18:14:47 +00:00
700b873130
Detemplatize the Statistic class. The only type it is instantiated with
...
is 'unsigned'.
llvm-svn: 32279
2006-12-06 17:46:33 +00:00
edcc8c2f8b
Remove the 'printname' argument to WriteAsOperand. It is always true, and
...
passing false would make the asmprinter fail anyway.
llvm-svn: 32264
2006-12-06 06:16:21 +00:00
ec58903623
counter should be unsigned.
...
llvm-svn: 32252
2006-12-06 01:50:04 +00:00
c209b584eb
add an instcombine xform. This speeds up 462.libquantum from 9.78s to
...
7.48s. This regression is due to unforseen consequences of the cast patch.
llvm-svn: 32209
2006-12-05 01:26:29 +00:00
21efc73161
SCCP does not handle Packed Type properly. Disable Packed Type handling
...
for now.
llvm-svn: 32208
2006-12-04 23:54:59 +00:00
14fbdd5523
Update call to CastInst::getCastOpcode for its new signature.
...
llvm-svn: 32166
2006-12-04 02:48:01 +00:00
cc08c83186
Unbreak VC++ build.
...
llvm-svn: 32113
2006-12-02 02:22:01 +00:00
7a002fec1f
disable transformations that are invalid for fp vectors. This fixes
...
Transforms/InstCombine/2006-12-01-BadFPVectorXform.ll
llvm-svn: 32112
2006-12-02 00:13:08 +00:00
ad05ee9f39
Remove 4 FIXMEs to hack around cast-to-bool problems which no longer exist.
...
llvm-svn: 32051
2006-11-30 23:13:36 +00:00
c8978c5272
make it clear that this is always a zext
...
llvm-svn: 32044
2006-11-30 17:35:08 +00:00
3ede00b376
One more bugfix, 3 cases of making casts explicit.
...
llvm-svn: 32043
2006-11-30 17:32:29 +00:00
0390b9e6bb
Fix a bug in globalopt due to the recent cast patch.
...
llvm-svn: 32042
2006-11-30 17:26:08 +00:00
960acb008b
implement cast.ll:test35. With this, we recognize:
...
unsigned short swp(unsigned short a) {
return ((a & 0xff00) >> 8 | (a & 0x00ff) << 8);
}
as an idiom for bswap.
llvm-svn: 32011
2006-11-29 07:18:39 +00:00
d747f015ff
Teach instcombine to turn trunc(srl x, c) -> srl (trunc(x), c) when safe.
...
This implements InstCombine/cast.ll:test34. It fires hundreds of times on
176.gcc.
llvm-svn: 32009
2006-11-29 07:04:07 +00:00
a7942b7bbd
Implement Regression/Transforms/InstCombine/bswap-fold.ll,
...
folding seteq (bswap(x)), c -> seteq(x,bswap(c))
llvm-svn: 32006
2006-11-29 05:02:16 +00:00
a736fdf216
Join a split line.
...
llvm-svn: 31996
2006-11-29 01:11:01 +00:00
116ad83aa0
Undo the last patch until 253.perlbmk passes with these changes.
...
llvm-svn: 31977
2006-11-28 20:23:51 +00:00
59fe2d89ae
Remove 4 FIXME's from the CAST patch now that the back end is correctly
...
producing code for "trunc to bool". This passes all tests on Linux.
llvm-svn: 31963
2006-11-28 07:23:01 +00:00
8e9a7b73d9
Fix PR1014 and InstCombine/2006-11-27-XorBug.ll.
...
llvm-svn: 31941
2006-11-27 19:55:07 +00:00
6c38f0bb07
For PR950:
...
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.
llvm-svn: 31931
2006-11-27 01:05:10 +00:00
4ae401074c
Remove #include <iostream> and use llvm_* streams instead.
...
llvm-svn: 31925
2006-11-26 10:17:54 +00:00
8f13b5c43e
Replace #include <iostream> with llvm_* streams.
...
llvm-svn: 31924
2006-11-26 10:02:32 +00:00
5dbf43c983
Removed #include <iostream> and replaced with llvm_* streams.
...
llvm-svn: 31923
2006-11-26 09:46:52 +00:00
a7459ca813
Removed #include <iostream> and used the llvm_cerr/DOUT streams instead.
...
llvm-svn: 31922
2006-11-26 09:17:06 +00:00
09b7e4d3ab
Update to new predicate simplifier VRP design. Fixes PR966 and PR967.
...
Remove predicate simplifier from default gcc3 pipeline. New design is too
slow to enable by default.
Add new testcases for problems encountered in development.
llvm-svn: 31895
2006-11-22 23:49:16 +00:00
ec45a4c88c
This xform is handled by FoldOpIntoPhi in visitCastInst in a more elegant way.
...
llvm-svn: 31889
2006-11-21 17:05:13 +00:00
95adf8f1da
Do not convert massive blocks on phi nodes into select statements. Instead
...
only do these transformations if there are a small number of phi's.
This speeds up Ptrdist/ks from 2.35s to 2.19s on my mac pro.
llvm-svn: 31853
2006-11-18 19:19:36 +00:00
21eba2da26
If an indvar with a variable stride is used by the exit condition, go ahead
...
and handle it like constant stride vars. This fixes some bad codegen in
variable stride cases. For example, it compiles this:
void foo(int k, int i) {
for (k=i+i; k <= 8192; k+=i)
flags2[k] = 0;
}
to:
LBB1_1: #bb.preheader
movl %eax, %ecx
addl %ecx, %ecx
movl L_flags2$non_lazy_ptr, %edx
LBB1_2: #bb
movb $0, (%edx,%ecx)
addl %eax, %ecx
cmpl $8192, %ecx
jle LBB1_2 #bb
LBB1_5: #return
ret
or (if the array is local and we are in dynamic-nonpic or static mode):
LBB3_2: #bb
movb $0, _flags2(%ecx)
addl %eax, %ecx
cmpl $8192, %ecx
jle LBB3_2 #bb
and:
lis r2, ha16(L_flags2$non_lazy_ptr)
lwz r2, lo16(L_flags2$non_lazy_ptr)(r2)
slwi r3, r4, 1
LBB1_2: ;bb
li r5, 0
add r6, r4, r3
stbx r5, r2, r3
cmpwi cr0, r6, 8192
bgt cr0, LBB1_5 ;return
instead of:
leal (%eax,%eax,2), %ecx
movl %eax, %edx
addl %edx, %edx
addl L_flags2$non_lazy_ptr, %edx
xorl %esi, %esi
LBB1_2: #bb
movb $0, (%edx,%esi)
movl %eax, %edi
addl %esi, %edi
addl %ecx, %esi
cmpl $8192, %esi
jg LBB1_5 #return
and:
lis r2, ha16(L_flags2$non_lazy_ptr)
lwz r2, lo16(L_flags2$non_lazy_ptr)(r2)
mulli r3, r4, 3
slwi r5, r4, 1
li r6, 0
add r2, r2, r5
LBB1_2: ;bb
li r5, 0
add r7, r3, r6
stbx r5, r2, r6
add r6, r4, r6
cmpwi cr0, r7, 8192
ble cr0, LBB1_2 ;bb
This speeds up Benchmarks/Shootout/sieve from 8.533s to 6.464s and
implements LoopStrengthReduce/var_stride_used_by_compare.ll
llvm-svn: 31809
2006-11-17 06:17:33 +00:00
e3a63d136d
Fix a gcc 4.2 warning.
...
llvm-svn: 31751
2006-11-15 04:53:24 +00:00
f05d69ae72
implement InstCombine/shift-simplify.ll by transforming:
...
(X >> Z) op (Y >> Z) -> (X op Y) >> Z
for all shifts and all ops={and/or/xor}.
llvm-svn: 31729
2006-11-14 07:46:50 +00:00
d12a4bf799
implement InstCombine/and-compare.ll:test1. This compiles:
...
typedef struct { unsigned prefix : 4; unsigned code : 4; unsigned unsigned_p : 4; } tree_common;
int foo(tree_common *a, tree_common *b) { return a->code == b->code; }
into:
_foo:
movl 4(%esp), %eax
movl 8(%esp), %ecx
movl (%eax), %eax
xorl (%ecx), %eax
# TRUNCATE movb %al, %al
shrb $4, %al
testb %al, %al
sete %al
movzbl %al, %eax
ret
instead of:
_foo:
movl 8(%esp), %eax
movb (%eax), %al
shrb $4, %al
movl 4(%esp), %ecx
movb (%ecx), %cl
shrb $4, %cl
cmpb %al, %cl
sete %al
movzbl %al, %eax
ret
saving one cycle by eliminating a shift.
llvm-svn: 31727
2006-11-14 06:06:06 +00:00
d4dee405cb
Fix InstCombine/2006-11-10-ashr-miscompile.ll a miscompilation introduced
...
by the shr -> [al]shr patch. This was reduced from 176.gcc.
llvm-svn: 31653
2006-11-10 23:38:52 +00:00
82928ca290
second patch to fix PR992/993.
...
llvm-svn: 31610
2006-11-09 23:36:08 +00:00
924f4fee8b
Minimal patch to fix PR992/PR993
...
llvm-svn: 31608
2006-11-09 23:17:45 +00:00
6e2c15c158
Teach ShrinkDemandedConstant how to handle X+C. This implements:
...
add.ll:test33, add.ll:test34, shift-sra.ll:test2
llvm-svn: 31586
2006-11-09 05:12:27 +00:00
4f218d56f5
reenable factoring of GEP expressions, being more precise about the
...
case that it bad to do.
llvm-svn: 31563
2006-11-08 19:42:28 +00:00
cd62f11227
make this code more efficient by not creating a phi node we are just going to
...
delete in the first place. This also makes it simpler.
llvm-svn: 31562
2006-11-08 19:29:23 +00:00
61feeb90f9
Remove redundant <cmath>.
...
llvm-svn: 31561
2006-11-08 19:16:44 +00:00
a3acfca920
disable this factoring optzn for GEPs for now, this severely pessimizes some
...
loops.
llvm-svn: 31560
2006-11-08 18:49:31 +00:00
fdff938a7e
For PR950:
...
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.
llvm-svn: 31542
2006-11-08 06:47:33 +00:00
4967f6ddea
scalarrepl should not split the two elements of the vsiidx array:
...
int func(vFloat v0, vFloat v1) {
int ii;
vSInt32 vsiidx[2];
vsiidx[0] = _mm_cvttps_epi32(v0);
vsiidx[1] = _mm_cvttps_epi32(v1);
ii = ((int *) vsiidx)[4];
return ii;
}
This fixes Transforms/ScalarRepl/2006-11-07-InvalidArrayPromote.ll
llvm-svn: 31524
2006-11-07 22:42:47 +00:00
7d6f3db3e2
Unbreak VC++ build.
...
llvm-svn: 31464
2006-11-05 19:31:28 +00:00
67bad5adbc
Remove commented line from earlier debugging.
...
llvm-svn: 31460
2006-11-05 14:19:40 +00:00
0ebb0b03e6
The wrong parameter was being tested to deturmine i32 vs i64
...
llvm-svn: 31431
2006-11-03 22:45:50 +00:00
62e2cad6b8
remove dead code
...
llvm-svn: 31398
2006-11-03 01:34:58 +00:00
de46e48420
For PR786:
...
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.
llvm-svn: 31380
2006-11-02 20:25:50 +00:00
7eb55b395f
For PR950:
...
Replace the REM instruction with UREM, SREM and FREM.
llvm-svn: 31369
2006-11-02 01:53:59 +00:00
2cb4f83b38
There can be more than one PHINode at the start of the block.
...
llvm-svn: 31362
2006-11-01 23:04:45 +00:00
44519a8feb
Handle PHINode with only one incoming value.
...
This fixes http://llvm.org/bugs/show_bug.cgi?id=979
llvm-svn: 31358
2006-11-01 22:26:43 +00:00
5a0bd61c64
Fix GlobalOpt/2006-11-01-ShrinkGlobalPhiCrash.ll and McGill/chomp
...
llvm-svn: 31352
2006-11-01 18:03:33 +00:00
eebea43b48
Factor gep instructions through phi nodes.
...
llvm-svn: 31346
2006-11-01 07:43:41 +00:00
14f82c7dcd
Turn a phi of many loads into a phi of the address and a single load of the
...
result. This can significantly shrink code and exposes identities more
aggressively.
llvm-svn: 31344
2006-11-01 07:13:54 +00:00
dc826fc068
Fix a bug in the previous patch
...
llvm-svn: 31342
2006-11-01 04:55:47 +00:00
cadac0c5c3
Fold things like "phi [add (a,b), add(c,d)]" into two phi's and one add.
...
This triggers thousands of times on multisource.
llvm-svn: 31341
2006-11-01 04:51:18 +00:00
984d6e1669
generalize the fix for PR977 to also fix
...
Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll
llvm-svn: 31317
2006-10-31 18:56:48 +00:00
eb68f080ef
Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll
...
llvm-svn: 31315
2006-10-31 17:52:18 +00:00
fc519cd2d1
Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT.
...
llvm-svn: 31284
2006-10-29 21:21:20 +00:00
3e763f5708
add option to isCriticalEdge
...
llvm-svn: 31258
2006-10-28 06:58:17 +00:00
a6eb7e0803
break edges more intelligently
...
llvm-svn: 31257
2006-10-28 06:45:33 +00:00
80ea207bfa
Expose a smarter way to break critical edges.
...
llvm-svn: 31256
2006-10-28 06:44:56 +00:00
400ac04e64
SplitCriticalEdge checks to see if an edge is critical, don't check twice
...
llvm-svn: 31255
2006-10-28 06:38:14 +00:00
5191c65485
prepare for a change I'm about to make
...
llvm-svn: 31248
2006-10-28 00:59:20 +00:00
00c482b7a2
Simplify code a bit by changing instances of:
...
InsertNewInstBefore(new CastInst(Val, ValTy, Val->GetName()), I)
into:
InsertCastBefore(Val, ValTy, I)
llvm-svn: 31204
2006-10-26 19:19:06 +00:00
7e80b0b31e
For PR950:
...
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.
llvm-svn: 31195
2006-10-26 06:15:43 +00:00
5b979ae531
Fix 2006-10-25-AddSetCC. A relational operator (like setlt) can never
...
produce an EQ property.
llvm-svn: 31193
2006-10-26 02:35:18 +00:00
9d17c82a26
Resurrect r1.25.
...
Fix and comment the "or", "and" and "xor" transformations.
llvm-svn: 31189
2006-10-25 23:48:24 +00:00
53f53db919
hide symbols properly
...
llvm-svn: 31184
2006-10-25 21:14:31 +00:00
ebb1ad4382
Fix Transforms/ScalarRepl/2006-10-23-PointerUnionCrash.ll
...
llvm-svn: 31151
2006-10-24 06:26:32 +00:00
dc7b9beb20
Revert back to r1.21, which was the last revision of predsimplify that
...
passes llvm-gcc bootstrap.
llvm-svn: 31146
2006-10-24 00:36:21 +00:00
fe7b6ef346
Handle fallout from the recent branch-on-undef changes. This fixes
...
Prolangs-C/agrep and SCCP/2006-10-23-IPSCCP-Crash.ll
llvm-svn: 31132
2006-10-23 18:57:02 +00:00
53b4158448
Remove the Backwards operation. Resolving now works at the time when a
...
property is added by running through the list of uses of the value and
adding resolved properties to the property set.
llvm-svn: 31126
2006-10-23 01:56:02 +00:00
6f5c30fcec
Fix similar missing optimization opportunity in XOR.
...
llvm-svn: 31123
2006-10-22 22:22:58 +00:00
af2b0571d0
Whoops! Add missing NULL check.
...
llvm-svn: 31121
2006-10-22 21:38:24 +00:00
2c734f3fc1
Handle "if ((x|y) != 0)" for ints like we do for bools. Fixes missed
...
optimization opportunity pointed out by Chris Lattner.
llvm-svn: 31118
2006-10-22 21:36:41 +00:00
f345008339
AllocaInst can't return a null pointer. Fixes missed optimization
...
opportunity pointed out by Andrew Lewycky.
llvm-svn: 31115
2006-10-22 19:53:27 +00:00
250eff20da
Add a workaround for PR962, disabling the more aggressive form of this
...
transformation. This speeds up a C++ app 2.25x.
llvm-svn: 31113
2006-10-22 18:42:26 +00:00
af17096dcf
3 Changes:
...
1. Better document what is going on here.
2. Only hack on one branch per iteration, making the results less conservative.
3. Handle the problematic case by marking edges executable instead of by
playing with value lattice states. This is far less pessimistic, and fixes
SCCP/ipsccp-gvar.ll.
llvm-svn: 31106
2006-10-22 05:59:17 +00:00
af1222c1a7
llvm-extract should remove module-level asm
...
llvm-svn: 31086
2006-10-20 21:35:41 +00:00
319c86fd38
Fix an ugly problem in SCCP. This fixes Benchmarks/Misc-C++/mandel-text.cpp
...
llvm-svn: 31073
2006-10-20 20:19:08 +00:00
5dee3b2526
Fix miscompilation of MallocBench/espresso which code review pointed out
...
but apparently didn't make it into the final patch.
llvm-svn: 31070
2006-10-20 18:20:21 +00:00
e0fc4dfc22
For PR950:
...
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.
llvm-svn: 31063
2006-10-20 07:07:24 +00:00
5d417e35bc
While creating mask, use 1ULL instead of 1.
...
llvm-svn: 31062
2006-10-20 01:16:56 +00:00
b8b11599dd
Fix SimplifyCFG/2006-10-19-UncondDiv.ll by disabling a bad xform.
...
llvm-svn: 31061
2006-10-20 00:42:07 +00:00
5d6df959e3
It is OK to remove extra cast if operation is EQ/NE even though source
...
and destination sign may not match but other conditions are met.
llvm-svn: 31056
2006-10-19 20:59:13 +00:00
88afd00d1d
Typo Typo.
...
llvm-svn: 31055
2006-10-19 19:21:36 +00:00
472530d9fc
Typo.
...
llvm-svn: 31054
2006-10-19 19:05:38 +00:00
b42aef4925
Fix bug in PR454 resolution. Added new test case.
...
This fixes llvmAsmParser.cpp miscompile by llvm on PowerPC Darwin.
llvm-svn: 31053
2006-10-19 18:54:08 +00:00
3c514959dd
Undo Chris' last patch, it caused a regression.
...
llvm-svn: 30991
2006-10-16 23:08:08 +00:00
9a1c7dd27a
fix a buggy check that accidentally disabled this xform
...
llvm-svn: 30967
2006-10-15 22:42:15 +00:00
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
41b442242d
Implement SROA of unions with mixed pointers/integers in them. This implements
...
PR892 and Transforms/ScalarRepl/union-pointer.ll:test2
llvm-svn: 30825
2006-10-08 23:53:04 +00:00
05f8272afa
Implement Transforms/ScalarRepl/union-pointer.ll:test
...
llvm-svn: 30823
2006-10-08 23:28:04 +00:00
2deeaeaca7
add a new SimplifyDemandedVectorElts method, which works similarly to
...
SimplifyDemandedBits. The idea is that some operations can be simplified if
not all of the computed elements are needed. Some targets (like x86) have a
large number of intrinsics that operate on a single element, but pass other
elts through unmodified. If those other elements are not needed, the
intrinsics can be simplified to scalar operations, and insertelement ops can
be removed.
This turns (f.e.):
ushort %Convert_sse(float %f) {
%tmp = insertelement <4 x float> undef, float %f, uint 0 ; <<4 x float>> [#uses=1]
%tmp10 = insertelement <4 x float> %tmp, float 0.000000e+00, uint 1 ; <<4 x float>> [#uses=1]
%tmp11 = insertelement <4 x float> %tmp10, float 0.000000e+00, uint 2 ; <<4 x float>> [#uses=1]
%tmp12 = insertelement <4 x float> %tmp11, float 0.000000e+00, uint 3 ; <<4 x float>> [#uses=1]
%tmp28 = tail call <4 x float> %llvm.x86.sse.sub.ss( <4 x float> %tmp12, <4 x float> < float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > ) ; <<4 x float>> [#uses=1]
%tmp37 = tail call <4 x float> %llvm.x86.sse.mul.ss( <4 x float> %tmp28, <4 x float> < float 5.000000e-01, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > ) ; <<4 x float>> [#uses=1]
%tmp48 = tail call <4 x float> %llvm.x86.sse.min.ss( <4 x float> %tmp37, <4 x float> < float 6.553500e+04, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > ) ; <<4 x float>> [#uses=1]
%tmp59 = tail call <4 x float> %llvm.x86.sse.max.ss( <4 x float> %tmp48, <4 x float> zeroinitializer ) ; <<4 x float>> [#uses=1]
%tmp = tail call int %llvm.x86.sse.cvttss2si( <4 x float> %tmp59 ) ; <int> [#uses=1]
%tmp69 = cast int %tmp to ushort ; <ushort> [#uses=1]
ret ushort %tmp69
}
into:
ushort %Convert_sse(float %f) {
entry:
%tmp28 = sub float %f, 1.000000e+00 ; <float> [#uses=1]
%tmp37 = mul float %tmp28, 5.000000e-01 ; <float> [#uses=1]
%tmp375 = insertelement <4 x float> undef, float %tmp37, uint 0 ; <<4 x float>> [#uses=1]
%tmp48 = tail call <4 x float> %llvm.x86.sse.min.ss( <4 x float> %tmp375, <4 x float> < float 6.553500e+04, float undef, float undef, float undef > ) ; <<4 x float>> [#uses=1]
%tmp59 = tail call <4 x float> %llvm.x86.sse.max.ss( <4 x float> %tmp48, <4 x float> < float 0.000000e+00, float undef, float undef, float undef > ) ; <<4 x float>> [#uses=1]
%tmp = tail call int %llvm.x86.sse.cvttss2si( <4 x float> %tmp59 ) ; <int> [#uses=1]
%tmp69 = cast int %tmp to ushort ; <ushort> [#uses=1]
ret ushort %tmp69
}
which improves codegen from:
_Convert_sse:
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
to:
_Convert_sse:
movss 4(%esp), %xmm0
subss LCPI1_0, %xmm0
mulss LCPI1_1, %xmm0
movss LCPI1_2, %xmm1
minss %xmm1, %xmm0
xorps %xmm1, %xmm1
maxss %xmm1, %xmm0
cvttss2si %xmm0, %eax
andl $65535, %eax
ret
This is just a first step, it can be extended in many ways. Testcase here:
Transforms/InstCombine/vec_demanded_elts.ll
llvm-svn: 30752
2006-10-05 06:55:50 +00:00
52886e72d7
This case isn't implemented yet. It seems unlikely to be needed, but if it
...
ever is, we want to get an assert instead of silent bad codegen.
llvm-svn: 30716
2006-10-04 04:58:58 +00:00
58a910dff5
Simplify logic further.
...
Ensure that we copy KnownProperties before calling visitBasicBlock, else
we may leak properties into blocks where they don't belong.
llvm-svn: 30705
2006-10-03 17:36:01 +00:00
1d00f3e144
Simplify, now that predsimplify depends on break-crit-edges.
...
Fix SwitchInst where dest-block is the same as one of the cases.
llvm-svn: 30700
2006-10-03 15:19:11 +00:00
755f801adc
Move break-crit-edges before the predicate simplifier. Allows us to
...
optimize in more cases.
llvm-svn: 30699
2006-10-03 14:52:23 +00:00
ff510a58c2
Revert previous patch. Still breaking things.
...
llvm-svn: 30698
2006-10-03 07:26:07 +00:00
8aca0ee8c3
Fix PR932 and Analysis/Dominators/2006-10-02-BreakCritEdges.ll:
...
The critical edge block dominates the dest block if the destblock dominates
all edges other than the one incoming from the critical edge.
llvm-svn: 30696
2006-10-03 07:02:02 +00:00
7d19067c42
Fix a bug from r1.391 of this file, where we checked the size instead of
...
the alignment when promoting allocations. This implements
InstCombine/cast.ll:test32
llvm-svn: 30682
2006-10-01 19:40:58 +00:00
4797c891c0
Fix debug output
...
llvm-svn: 30680
2006-09-30 23:32:50 +00:00
24d3d4280a
Implement SRA of heap allocations.
...
llvm-svn: 30679
2006-09-30 23:32:09 +00:00
80a01ef6f0
Add some ifdef'd out debug info
...
llvm-svn: 30676
2006-09-30 19:40:30 +00:00
6ab03f6a08
Eliminate ConstantBool::True and ConstantBool::False. Instead, provide
...
ConstantBool::getTrue() and ConstantBool::getFalse().
llvm-svn: 30665
2006-09-28 23:35:22 +00:00
7cb6809c25
Another attempt at making ArgPromotion smarter. This patch no longer breaks Burg.
...
llvm-svn: 30657
2006-09-28 23:02:22 +00:00
525804f31e
simplify code
...
llvm-svn: 30656
2006-09-28 22:58:25 +00:00
e03ca2ca4a
set DEBUG_TYPE right
...
llvm-svn: 30623
2006-09-27 04:58:23 +00:00
059c79264f
Style changes only. Remove dead code, fix a comment.
...
llvm-svn: 30588
2006-09-23 15:13:08 +00:00
6bd6da4097
Be far more careful when splitting a loop header, either to form a preheader
...
or when splitting loops with a common header into multiple loops. In particular
the old code would always insert the preheader before the old loop header. This
is disasterous in cases where the loop hasn't been rotated. For example, it can
produce code like:
.. outside the loop...
jmp LBB1_2 #bb13.outer
LBB1_1: #bb1
movsd 8(%esp,%esi,8), %xmm1
mulsd (%edi), %xmm1
addsd %xmm0, %xmm1
addl $24, %edi
incl %esi
jmp LBB1_3 #bb13
LBB1_2: #bb13.outer
leal (%edx,%eax,8), %edi
pxor %xmm1, %xmm1
xorl %esi, %esi
LBB1_3: #bb13
movapd %xmm1, %xmm0
cmpl $4, %esi
jl LBB1_1 #bb1
Note that the loop body is actually LBB1_1 + LBB1_3, which means that the
loop now contains an uncond branch WITHIN it to jump around the inserted
loop header (LBB1_2). Doh.
This patch changes the preheader insertion code to insert it in the right
spot, producing this code:
... outside the loop, fall into the header ...
LBB1_1: #bb13.outer
leal (%edx,%eax,8), %esi
pxor %xmm0, %xmm0
xorl %edi, %edi
jmp LBB1_3 #bb13
LBB1_2: #bb1
movsd 8(%esp,%edi,8), %xmm0
mulsd (%esi), %xmm0
addsd %xmm1, %xmm0
addl $24, %esi
incl %edi
LBB1_3: #bb13
movapd %xmm0, %xmm1
cmpl $4, %edi
jl LBB1_2 #bb1
Totally crazy, no branch in the loop! :)
llvm-svn: 30587
2006-09-23 08:19:21 +00:00
608cd05e3f
Teach UpdateDomInfoForRevectoredPreds to handle revectored preds that are not
...
reachable, making it general purpose enough for use by InsertPreheaderForLoop.
Eliminate custom dominfo updating code in InsertPreheaderForLoop, using
UpdateDomInfoForRevectoredPreds instead.
llvm-svn: 30586
2006-09-23 07:40:52 +00:00
51c95cdd82
Fix Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.ll
...
llvm-svn: 30555
2006-09-21 05:12:20 +00:00
fde9c308b2
Don't rewrite ConstantExpr::get.
...
llvm-svn: 30552
2006-09-21 01:05:35 +00:00
d74c55f483
Once we're down to "setcc type constant1, constant2", at least come up
...
with the right answer.
llvm-svn: 30550
2006-09-20 23:02:24 +00:00
cfff1c3f86
Use a total ordering to compare instructions.
...
Fixes infinite loop in resolve().
llvm-svn: 30540
2006-09-20 17:04:01 +00:00
44cb67af5c
simplify
...
llvm-svn: 30535
2006-09-20 15:37:57 +00:00
380c7e9a59
We went through all that trouble to compute whether it was safe to transform
...
this comparison, but never checked it. Whoops, no wonder we miscompiled
177.mesa!
llvm-svn: 30511
2006-09-20 04:44:59 +00:00
cd3f6ff0e5
Back out Chris' last set of changes. This breaks 177.mesa and povray somehow.
...
llvm-svn: 30505
2006-09-20 01:39:40 +00:00
453280b94d
80 col.
...
llvm-svn: 30504
2006-09-20 01:10:02 +00:00
4f339bebb0
If we have an add, do it in the pointer realm, not the int realm. This is critical in the linux kernel for pointer analysis correctness
...
llvm-svn: 30496
2006-09-19 18:24:51 +00:00
12f52faf93
implement select.ll:test19-22
...
llvm-svn: 30482
2006-09-19 06:18:21 +00:00
b9c5483a93
Walk down the dominator tree instead of the control flow graph. That means
...
that we can't modify the CFG any more, at least not until it's possible
to update the dominator tree (PR217).
llvm-svn: 30469
2006-09-18 21:09:35 +00:00
de07792595
Fix an infinite loop building the CFE
...
llvm-svn: 30465
2006-09-18 18:27:05 +00:00
67a35bbce7
Implement a trivial optzn: of vastart is never called in a function that takes
...
... args, remove the '...'.
This is Transforms/DeadArgElim/dead_vaargs.ll
llvm-svn: 30459
2006-09-18 07:02:31 +00:00
4922a0e53f
Implement InstCombine/cast.ll:test31. This speeds up 462.libquantum by 26%.
...
llvm-svn: 30456
2006-09-18 05:27:43 +00:00
420c4bcc8d
Implement Transforms/InstCombine/shift-sra.ll:test0
...
llvm-svn: 30450
2006-09-18 04:31:40 +00:00
b3f24c91b0
Rewrite shift/and/compare sequences to promote better licm of the RHS.
...
Use isLogicalShift/isArithmeticShift to simplify code.
llvm-svn: 30448
2006-09-18 04:22:48 +00:00
850465d53f
Fix Transforms/InstCombine/2006-09-15-CastToBool.ll and PR913
...
llvm-svn: 30405
2006-09-16 03:14:10 +00:00
9482cc5b16
revert previous two patches. They cause miscompilation of MultiSource/Applications/Burg
...
llvm-svn: 30397
2006-09-15 17:24:45 +00:00
edadd3faee
Revert my previous work on ArgumentPromotion. Further investigation has revealed these
...
changes to be incorrect. They just weren't showing up in any of our current testcases.
llvm-svn: 30385
2006-09-15 05:22:51 +00:00
d61d39ec53
Adding dllimport, dllexport and external weak linkage types.
...
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.
llvm-svn: 30374
2006-09-14 18:23:27 +00:00
237ccf2a51
Second half of the fix for Transforms/Inline/inline_cleanup.ll
...
This folds unconditional branches that are often produced by code
specialization.
llvm-svn: 30307
2006-09-13 21:27:00 +00:00
12efffc96b
Add some more consistency checks.
...
llvm-svn: 30305
2006-09-13 19:32:53 +00:00
51ce8d6b46
Fix unionSets so that it can merge correctly.
...
llvm-svn: 30304
2006-09-13 19:24:01 +00:00
6ef6d06d21
Implement the first half of Transforms/Inline/inline_cleanup.ll
...
llvm-svn: 30303
2006-09-13 19:23:57 +00:00
3a4dc7b489
Erase dead instructions.
...
llvm-svn: 30298
2006-09-13 18:55:37 +00:00
fab4972a6e
Initialize DontInternalize.
...
llvm-svn: 30281
2006-09-13 01:02:26 +00:00
1d7ec20a4d
An sinkable instruction may exist with uses, if those uses are in dead blocks.
...
Handle this. This fixes PR908 and Transforms/LICM/2006-09-12-DeadUserOfSunkInstr.ll
llvm-svn: 30275
2006-09-12 19:17:09 +00:00
d28627009a
Fix PR905 and InstCombine/2006-09-11-EmptyStructCrash.ll
...
llvm-svn: 30266
2006-09-11 21:43:16 +00:00
e94f42a740
Skip the linear search if the answer is already known.
...
llvm-svn: 30251
2006-09-11 17:23:34 +00:00
d1f8e07808
Allow tail duplication in more cases, relaxing the previous restriction a
...
bit. This fixes Regression/Transforms/TailDup/MergeTest.ll
llvm-svn: 30237
2006-09-10 18:17:58 +00:00
9a22d7b60f
Replace EquivalenceClasses with a custom-built data structure. Many common
...
operations (like findProperties) should be faster, at the expense of
unionSets being slower in cases that are rare in practise.
Don't erase a dead Instruction. This fixes a memory corruption issue.
llvm-svn: 30235
2006-09-10 02:27:07 +00:00
0468987592
Implement Transforms/InstCombine/hoist_instr.ll
...
llvm-svn: 30234
2006-09-09 22:02:56 +00:00
27ff96d87a
Make inlining costs more accurate.
...
llvm-svn: 30231
2006-09-09 20:40:44 +00:00
d79dc79831
Turn div X, (Cond ? Y : 0) -> div X, Y
...
This implements select.ll::test18.
llvm-svn: 30230
2006-09-09 20:26:32 +00:00
c465046e65
Throttle back tail duplication to avoid creating really ugly sequences of code.
...
For Transforms/TailDup/if-tail-dup.ll, f.e., it produces:
_foo:
movl 8(%esp), %eax
movl 4(%esp), %ecx
testl $1, %ecx
je LBB1_2 #cond_next
LBB1_1: #cond_true
movl $1, (%eax)
LBB1_2: #cond_next
testl $2, %ecx
je LBB1_4 #cond_next10
LBB1_3: #cond_true6
movl $1, 4(%eax)
LBB1_4: #cond_next10
testl $4, %ecx
je LBB1_6 #cond_next18
LBB1_5: #cond_true14
movl $1, 8(%eax)
LBB1_6: #cond_next18
testl $8, %ecx
je LBB1_8 #return
LBB1_7: #cond_true22
movl $1, 12(%eax)
ret
LBB1_8: #return
ret
instead of:
_foo:
movl 4(%esp), %eax
testl $2, %eax
sete %cl
movl 8(%esp), %edx
testl $1, %eax
je LBB1_2 #cond_next
LBB1_1: #cond_true
movl $1, (%edx)
testb %cl, %cl
jne LBB1_4 #cond_next10
jmp LBB1_3 #cond_true6
LBB1_2: #cond_next
testb %cl, %cl
jne LBB1_4 #cond_next10
LBB1_3: #cond_true6
movl $1, 4(%edx)
testl $4, %eax
je LBB1_6 #cond_next18
jmp LBB1_5 #cond_true14
LBB1_4: #cond_next10
testl $4, %eax
je LBB1_6 #cond_next18
LBB1_5: #cond_true14
movl $1, 8(%edx)
testl $8, %eax
je LBB1_8 #return
jmp LBB1_7 #cond_true22
LBB1_6: #cond_next18
testl $8, %eax
je LBB1_8 #return
LBB1_7: #cond_true22
movl $1, 12(%edx)
ret
LBB1_8: #return
ret
llvm-svn: 30158
2006-09-07 21:30:15 +00:00
845b223da4
Fix Duraid's changes to work when TLI is null. This fixes the failing
...
lowerinvoke regtests.
llvm-svn: 30115
2006-09-05 17:48:07 +00:00
cf6749e4c0
add setJumpBufSize() and setJumpBufAlignment() to target-lowering.
...
Call these from your backend to enjoy setjmp/longjmp goodness, see
lib/Target/IA64/IA64ISelLowering.cpp for an example
llvm-svn: 30095
2006-09-04 06:21:35 +00:00
19b80e76df
Make ArgumentPromotion handle recursive functions that pass pointers in their recursive calls.
...
llvm-svn: 30057
2006-09-02 21:19:44 +00:00
8e5599354a
Improve handling of SelectInst.
...
Reorder operations to remove duplicated work.
Fix to leave floating-point types out of the optimization.
Add tests to predsimplify.ll for SwitchInst and SelectInst handling.
llvm-svn: 30055
2006-09-02 19:40:38 +00:00
Chris Lattner