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Author SHA1 Message Date
Evan Cheng
408425f0e0 Don't spill dead def. 
llvm-svn: 51305
 2008-05-20 08:10:37 +00:00
Matthijs Kooijman
9247675761 Fix typo. 
llvm-svn: 51303
 2008-05-20 07:26:45 +00:00
Chris Lattner
b387fd90fc Teach instcombine 4 new xforms: 
(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
Chris Lattner
323a985507 fix two issues Neil noticed, thanks! 
llvm-svn: 51296
 2008-05-20 03:50:52 +00:00
Chris Lattner
5c3ce73720 Add a bool to isEdgeFeasible that tells it whether to treat unknown 
value as undef or untracked.

llvm-svn: 51295
 2008-05-20 03:39:39 +00:00
Dan Gohman
e6bb320822 Fix ExecutionEngine's constant code to work properly when structs and arrays 
will become first-class types.

llvm-svn: 51293
 2008-05-20 03:20:09 +00:00
Dan Gohman
c2bd39553c Refine the fix in r51169 to only apply when the operand val being 
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
Evan Cheng
e95fc3e83d runOnMachineFunction should set IsPIC because relocation model may have been changed. 
llvm-svn: 51291
 2008-05-20 01:56:59 +00:00
Dan Gohman
3f6b53dba0 Make AssociativeOpt static. 
llvm-svn: 51290
 2008-05-20 01:14:05 +00:00
Dan Gohman
7681889f75 Run vortex-bug as x86-64, which is what the original bug was triggered on. 
llvm-svn: 51289
 2008-05-20 00:54:39 +00:00
Steve Naroff
a1c616ae1d Silence a warning about "*/" outside a comment. 
llvm-svn: 51287
 2008-05-20 00:46:15 +00:00
Devang Patel
9f385d71c2 Do not erase induction variable increment if it is used outside the loop. 
llvm-svn: 51280
 2008-05-19 22:23:55 +00:00
Dan Gohman
2d2351f037 Add a ComputeNumSignBits function for use by instcombine, based on the 
code in SelectionDAG.

llvm-svn: 51279
 2008-05-19 22:14:15 +00:00
Dale Johannesen
e6977495aa Handle quoted names when constructing $stub's, 
$non_lazy_ptr's and $lazy_ptr's.

llvm-svn: 51277
 2008-05-19 21:38:18 +00:00
Chris Lattner
859485412b switch to Type::getFPMantissaWidth instead of reinventing it. 
llvm-svn: 51275
 2008-05-19 21:17:23 +00:00
Chris Lattner
f6ed78c9c7 add a helper method. 
llvm-svn: 51274
 2008-05-19 21:17:01 +00:00
Chris Lattner
92599bcc72 minor cleanups, teach instcombine that sitofp/uitofp cannot 
produce a negative zero.

llvm-svn: 51272
 2008-05-19 20:27:56 +00:00
Chris Lattner
63c384df1e convert fptosi(sitofp x) -> x if the fp value has enough bits in its mantissa 
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
Chris Lattner
1435b94f62 Fold FP comparisons where one operand is converted from an integer 
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
Bill Wendling
1866fa680f Remove warnings about unused parameters and shadowed variables. 
llvm-svn: 51266
 2008-05-19 20:15:12 +00:00
Chris Lattner
ad02ff166e remove debug output 
llvm-svn: 51264
 2008-05-19 20:03:53 +00:00
Chris Lattner
510a6b249c be more aggressive about transforming add -> or when the operands have no 
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
Duncan Sands
1c11cba7ec Check that always_inline functions are inlined 
whether or not -funit-at-a-time is used (C++ uses
it, C doesn't) - it was working before only when
not doing unit-at-a-time.

llvm-svn: 51258
 2008-05-19 16:44:44 +00:00
Duncan Sands
7b84c36791 Fix PR2341 - when the length is 4 use an i32 not 
an i16!  Cleaned up trailing whitespace while there.

llvm-svn: 51240
 2008-05-19 09:27:24 +00:00
Gordon Henriksen
27c184c385 Reverting accidental commit of generated files. 
llvm-svn: 51239
 2008-05-19 05:57:12 +00:00
Gordon Henriksen
a1f7004038 Remove a duplicative binding. Patch by Mahadevan R. 
llvm-svn: 51238
 2008-05-19 05:47:10 +00:00
Ted Kremenek
ec40faf7c5 Update VS project files (VS 2005) so that VS builds with TOT LLVM/clang. 
Patch by Dmitri Makarov!

llvm-svn: 51237
 2008-05-19 02:49:39 +00:00
Bill Wendling
aa7af44a55 Grammar fix. 
llvm-svn: 51236
 2008-05-19 00:25:01 +00:00
Bill Wendling
739223532a Delete module. 
llvm-svn: 51235
 2008-05-19 00:20:45 +00:00
Bill Wendling
09ad5a52e1 Convert non-ASCII apostrophes into ASCII apostrophes. 
llvm-svn: 51234
 2008-05-19 00:19:02 +00:00
Bill Wendling
d646984f41 Delete the Module object. 
llvm-svn: 51233
 2008-05-19 00:15:33 +00:00
Bill Wendling
3cc7be88e8 s/insure/ensure/ 
llvm-svn: 51232
 2008-05-19 00:05:30 +00:00
Nate Begeman
fdedac42c7 Teach GVN to not assert on vector comparisons 
llvm-svn: 51230
 2008-05-18 19:49:05 +00:00
Nate Begeman
f924b6e0d9 Fix a backwards check in the JIT symbol table code 
llvm-svn: 51229
 2008-05-18 19:09:10 +00:00
Chris Lattner
0c5b5c08e1 add missing #include. 
llvm-svn: 51227
 2008-05-18 14:24:58 +00:00
Chris Lattner
8c0f0a0e6c Fix PR2339 
llvm-svn: 51226
 2008-05-18 04:11:26 +00:00
Chris Lattner
8871489ae7 remove empty file? 
llvm-svn: 51225
 2008-05-18 04:10:18 +00:00
Nick Lewycky
46e3a168c0 Revert constant-folding change that will miscompile in some cases. 
llvm-svn: 51223
 2008-05-17 19:00:05 +00:00
Chris Lattner
504c367af9 trip count computation deficiency 
llvm-svn: 51222
 2008-05-17 15:37:38 +00:00
Bill Wendling
568cd9c076 On Darwin, the string header file isn't 64-bit clean. The use of 
"-Wshorten-64-to-32 -Werror" will cause a failure when compiling this complex
program:

#include <string>

class Path {
  mutable std::string path;
public:
  bool operator == (const Path &that) {
    return path == that.path;
  }
};

Using strcmp gets us past this annoying error.

llvm-svn: 51218
 2008-05-17 09:10:40 +00:00
Nick Lewycky
baa90d4eef Unbreak the build. 
llvm-svn: 51217
 2008-05-17 09:05:22 +00:00
Nick Lewycky
1df40102a9 Constant fold inttoptr and ptrtoint. 
llvm-svn: 51216
 2008-05-17 09:03:26 +00:00
Nick Lewycky
6f3744c685 Move isTrueWhenEqual to ICmpInst. 
llvm-svn: 51215
 2008-05-17 07:33:39 +00:00
Dale Johannesen
415dc434d6 Less conservative verison of previous patch, 
suggested by Duncan.

llvm-svn: 51211
 2008-05-16 23:18:52 +00:00
Dale Johannesen
12b968dd1e Add CommonLinkage, in a way that preserves the 
behavior on old .bc files.

llvm-svn: 51210
 2008-05-16 22:46:40 +00:00
Dale Johannesen
5da4b3ee8b Add CommonLinkage to lto (treated same as weak AFAICT) 
and llvm-nm (prints as C).

llvm-svn: 51209
 2008-05-16 22:44:18 +00:00
Dale Johannesen
002f76dcec Add CommonLinkage. 
llvm-svn: 51208
 2008-05-16 22:42:11 +00:00
Dale Johannesen
b2411740b7 Weak functions not declared non-throwing might be 
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
Eric Christopher
11359e9b1c Add functions to enable adding a single attribute to a function and 
its associated call site.

llvm-svn: 51204
 2008-05-16 20:39:43 +00:00
Dale Johannesen
16fa5c08cb Record weak external linkage in a case where we were 
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