0609ab646b
More local spiller complexity!
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If local spiller optimization turns some instruction into an identity copy, it will be removed. If the output register happens to be dead (and source is obviously killed), transfer the kill / dead information to last use / def in the same MBB.
llvm-svn: 51306
2008-05-20 08:13:21 +00:00
c8b028daa4
Don't spill dead def.
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llvm-svn: 51305
2008-05-20 08:10:37 +00:00
5148a4ba66
Fix typo.
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llvm-svn: 51303
2008-05-20 07:26:45 +00:00
7ac943fffd
Teach instcombine 4 new xforms:
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(add (sext x), cst) --> (sext (add x, cst'))
(add (sext x), (sext y)) --> (sext (add int x, y))
(add double (sitofp x), fpcst) --> (sitofp (add int x, intcst))
(add double (sitofp x), (sitofp y)) --> (sitofp (add int x, y))
This generally reduces conversions. For example MiBench/telecomm-gsm
gets these simplifications:
HACK2: %tmp67.i142.i.i = sext i16 %tmp6.i141.i.i to i32 ; <i32> [#uses=1]
%tmp23.i139.i.i = sext i16 %tmp2.i138.i.i to i32 ; <i32> [#uses=1]
%tmp8.i143.i.i = add i32 %tmp67.i142.i.i, %tmp23.i139.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i121.i.i = sext i16 %tmp6.i120.i.i to i32 ; <i32> [#uses=1]
%tmp23.i118.i.i = sext i16 %tmp2.i117.i.i to i32 ; <i32> [#uses=1]
%tmp8.i122.i.i = add i32 %tmp67.i121.i.i, %tmp23.i118.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i.i190.i = sext i16 %tmp6.i.i189.i to i32 ; <i32> [#uses=1]
%tmp23.i.i187.i = sext i16 %tmp2.i.i186.i to i32 ; <i32> [#uses=1]
%tmp8.i.i191.i = add i32 %tmp67.i.i190.i, %tmp23.i.i187.i ; <i32> [#uses=3]
HACK2: %tmp67.i173.i.i.i = sext i16 %tmp6.i172.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i170.i.i.i = sext i16 %tmp2.i169.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i174.i.i.i = add i32 %tmp67.i173.i.i.i, %tmp23.i170.i.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i152.i.i.i = sext i16 %tmp6.i151.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i149.i.i.i = sext i16 %tmp2.i148.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i153.i.i.i = add i32 %tmp67.i152.i.i.i, %tmp23.i149.i.i.i ; <i32> [#uses=3]
HACK2: %tmp67.i.i.i.i = sext i16 %tmp6.i.i.i.i to i32 ; <i32> [#uses=1]
%tmp23.i.i5.i.i = sext i16 %tmp2.i.i.i.i to i32 ; <i32> [#uses=1]
%tmp8.i.i7.i.i = add i32 %tmp67.i.i.i.i, %tmp23.i.i5.i.i ; <i32> [#uses=3]
This also fixes a bug in ComputeNumSignBits handling select and
makes it more aggressive with and/or.
llvm-svn: 51302
2008-05-20 05:46:13 +00:00
9c27f96d04
fix two issues Neil noticed, thanks!
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llvm-svn: 51296
2008-05-20 03:50:52 +00:00
f479856957
Add a bool to isEdgeFeasible that tells it whether to treat unknown
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value as undef or untracked.
llvm-svn: 51295
2008-05-20 03:39:39 +00:00
69ddfbfe9e
Fix ExecutionEngine's constant code to work properly when structs and arrays
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will become first-class types.
llvm-svn: 51293
2008-05-20 03:20:09 +00:00
e5572706e8
Refine the fix in r51169 to only apply when the operand val being
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replaced is a PHI. This prevents it from inserting uses before defs
in the case that it isn't a PHI and it depends on other instructions
later in the block. This fixes the 447.dealII regression on x86-64.
llvm-svn: 51292
2008-05-20 03:01:48 +00:00
974722b16f
runOnMachineFunction should set IsPIC because relocation model may have been changed.
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llvm-svn: 51291
2008-05-20 01:56:59 +00:00
d717761a2b
Make AssociativeOpt static.
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llvm-svn: 51290
2008-05-20 01:14:05 +00:00
ee7bf41c06
Do not erase induction variable increment if it is used outside the loop.
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llvm-svn: 51280
2008-05-19 22:23:55 +00:00
123438cc05
Add a ComputeNumSignBits function for use by instcombine, based on the
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code in SelectionDAG.
llvm-svn: 51279
2008-05-19 22:14:15 +00:00
5bf742f2aa
Handle quoted names when constructing $stub's,
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$non_lazy_ptr's and $lazy_ptr's.
llvm-svn: 51277
2008-05-19 21:38:18 +00:00
b42712288e
switch to Type::getFPMantissaWidth instead of reinventing it.
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llvm-svn: 51275
2008-05-19 21:17:23 +00:00
ba9acbe6dc
minor cleanups, teach instcombine that sitofp/uitofp cannot
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produce a negative zero.
llvm-svn: 51272
2008-05-19 20:27:56 +00:00
e35fe0f1c6
convert fptosi(sitofp x) -> x if the fp value has enough bits in its mantissa
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to accurately represent the integer. This triggers 9 times in 471.omnetpp,
though 8 of those seem to be inlined from the same place.
llvm-svn: 51271
2008-05-19 20:25:04 +00:00
5920a78034
Fold FP comparisons where one operand is converted from an integer
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type and the other operand is a constant into integer comparisons.
This happens surprisingly frequently (e.g. 10 times in 471.omnetpp),
which are things like this:
%tmp8283 = sitofp i32 %tmp82 to double
%tmp1013 = fcmp ult double %tmp8283, 0.0
Clearly comparing tmp82 against i32 0 is cheaper here.
this also triggers 8 times in gobmk, including this one:
%tmp375376 = sitofp i32 %tmp375 to double
%tmp377 = fcmp ogt double %tmp375376, 8.150000e+01
which is comparing an integer against 81.5 :).
llvm-svn: 51268
2008-05-19 20:18:56 +00:00
6e70830af9
remove debug output
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llvm-svn: 51264
2008-05-19 20:03:53 +00:00
fc365b60dc
be more aggressive about transforming add -> or when the operands have no
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intersecting bits. This triggers all over the place, for example in lencode,
with adds of stuff like:
%tmp580 = mul i32 %tmp579, 2
%tmp582 = and i32 %b8, 1
and
%tmp28 = shl i32 %abs.i, 1
%sign.0 = select i1 %tmp23, i32 1, i32 0
and
%tmp344 = shl i32 %tmp343, 2
%tmp346 = and i32 %tmp96, 3
etc.
llvm-svn: 51263
2008-05-19 20:01:56 +00:00
eec7a3c071
Fix PR2341 - when the length is 4 use an i32 not
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an i16! Cleaned up trailing whitespace while there.
llvm-svn: 51240
2008-05-19 09:27:24 +00:00
8bd151d194
Reverting accidental commit of generated files.
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llvm-svn: 51239
2008-05-19 05:57:12 +00:00
00889ccfca
Remove a duplicative binding. Patch by Mahadevan R.
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llvm-svn: 51238
2008-05-19 05:47:10 +00:00
65720c968c
Teach GVN to not assert on vector comparisons
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llvm-svn: 51230
2008-05-18 19:49:05 +00:00
7af15f17b5
Fix a backwards check in the JIT symbol table code
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llvm-svn: 51229
2008-05-18 19:09:10 +00:00
4b2a724fb8
Fix PR2339
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llvm-svn: 51226
2008-05-18 04:11:26 +00:00
eb185ca5e9
Revert constant-folding change that will miscompile in some cases.
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llvm-svn: 51223
2008-05-17 19:00:05 +00:00
1bafa6c886
trip count computation deficiency
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llvm-svn: 51222
2008-05-17 15:37:38 +00:00
79d681dddd
Unbreak the build.
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llvm-svn: 51217
2008-05-17 09:05:22 +00:00
1ba90bb69b
Constant fold inttoptr and ptrtoint.
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llvm-svn: 51216
2008-05-17 09:03:26 +00:00
79376f4e02
Move isTrueWhenEqual to ICmpInst.
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llvm-svn: 51215
2008-05-17 07:33:39 +00:00
5610dabac9
Less conservative verison of previous patch,
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suggested by Duncan.
llvm-svn: 51211
2008-05-16 23:18:52 +00:00
e7f5bc2c3b
Weak functions not declared non-throwing might be
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replaced at linktime with a body that throws, even
if the body in this file does not. Make PruneEH
be more conservative in this case.
g++.dg/eh/weak1.C
llvm-svn: 51207
2008-05-16 21:31:48 +00:00
901b1a75c9
Add functions to enable adding a single attribute to a function and
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its associated call site.
llvm-svn: 51204
2008-05-16 20:39:43 +00:00
2e1d5e487b
Record weak external linkage in a case where we were
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missing it. gcc.dg/darwin-weakimport-2.c.
Handle common and weak differently for darwin ppc32.
llvm-svn: 51201
2008-05-16 20:09:25 +00:00
e1f6e4b21d
API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.)
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llvm-svn: 51200
2008-05-16 19:29:10 +00:00
9ac3631fa3
If the result of a BIT_CONVERT is a v1* vector, it doesn't mean its source is a v1* vector.
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llvm-svn: 51192
2008-05-16 17:19:05 +00:00
67933e6692
Bill pointed out that system headers should be
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included after local headers.
llvm-svn: 51187
2008-05-16 09:30:00 +00:00
70424d195a
Silence the compiler warning differently. The
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original method caused gcc-4.2 to complain.
llvm-svn: 51186
2008-05-16 09:19:16 +00:00
173a53f87c
Do not dup malloc, vector instructions, etc. Throttle the default theshold way down.
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llvm-svn: 51183
2008-05-16 07:55:50 +00:00
c7d6eceb69
Remove ADCE's ability to delete loops. This ability is now implemented in a
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safer manner by loop deletion.
llvm-svn: 51182
2008-05-16 04:34:51 +00:00
ad5f211b48
Clean ups for loop deletion based on Chris' feedback.
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Also, use SCEV to determine the trip count of the loop, which is more powerful
and accurate that Loop::getTripCount.
llvm-svn: 51179
2008-05-16 04:32:45 +00:00
5c953b7d27
implement PR2328.
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llvm-svn: 51176
2008-05-16 02:59:42 +00:00
876dd3ca9e
Treat common as distinct from weak global on Darwin x86.
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llvm-svn: 51172
2008-05-16 00:52:06 +00:00
2f156ae850
Revert the change from r51157 in
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test/Verifier/2002-11-05-GetelementptrPointers.ll, which was incorrect.
Instead, fix getIndexedType to not follow pointer types, as
PointerType is a subclass of CompositeType.
llvm-svn: 51171
2008-05-16 00:16:32 +00:00
0a0fa7cf78
Fix a bug in LoopStrengthReduce that caused it to emit IR with
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use-before-def. The problem comes up in code with multiple PHIs where
one PHI is being rewritten in terms of the other, but the other needs
to be casted first. LLVM rules requre the cast instruction to be
inserted after any PHI instructions, but when instructions were
inserted to replace the second PHI value with a function of the first,
they were ended up going before the cast instruction. Avoid this
problem by remembering the location of the cast instruction, when one
is needed, and inserting the expansion of the new value after it.
This fixes a bug that surfaced in 255.vortex on x86-64 when
instcombine was removed from the middle of the loop optimization
passes.
llvm-svn: 51169
2008-05-15 23:26:57 +00:00
29e59ad6c9
Fix typos and comments.
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llvm-svn: 51165
2008-05-15 22:13:02 +00:00
6ef726a066
Allow an extra bit for CommonLinkage.
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This changes the .bc file format, but if I understand
how it works correctly, old .bc files continue to
be readable.
llvm-svn: 51161
2008-05-15 20:49:28 +00:00
f79f52282c
Actually scalarize the operand to BIT_CONVERT instead of asking someone to do
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something with a v1 type.
llvm-svn: 51160
2008-05-15 20:40:58 +00:00
12fce7751b
IR support for extractvalue and insertvalue instructions. Also, begin
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moving toward making structs and arrays first-class types.
llvm-svn: 51157
2008-05-15 19:50:34 +00:00
f52c8044ea
Use static and anonymous namespaces consistently with other passes.
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llvm-svn: 51156
2008-05-15 19:43:55 +00:00
Evan Cheng