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019104459d
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1985 Commits

Author SHA1 Message Date
Jeff Cohen
019104459d Keep tabs and trailing spaces out. 
llvm-svn: 22565
 2005-07-30 18:33:25 +00:00
Jeff Cohen
4f69b0d5cd Fix VC++ build problems. 
llvm-svn: 22564
 2005-07-30 18:22:27 +00:00
Nate Begeman
13bd25dc1d Ack, typo 
llvm-svn: 22560
 2005-07-30 00:21:31 +00:00
Nate Begeman
454caae5bd Commit a new LoopStrengthReduce pass that can use scalar evolutions and 
target data to decide which loop induction variables to strength reduce
and how to do so.  This work is mostly by Chris Lattner, with tweaks by
me to get it working on some of MultiSource.

llvm-svn: 22558
 2005-07-30 00:15:07 +00:00
Nate Begeman
0d1a7b6737 Break SCEVExpander out of IndVarSimplify into its own .h/.cpp file so that 
other passes may use it.

llvm-svn: 22557
 2005-07-30 00:12:19 +00:00
Jeff Cohen
bd51ec7461 Eliminate all remaining tabs and trailing spaces. 
llvm-svn: 22523
 2005-07-27 06:12:32 +00:00
Chris Lattner
1b22c180d7 ConvertibleToGEP always returns 0, remove some old crufty code which 
is actually dead because of this!

llvm-svn: 22515
 2005-07-26 16:38:28 +00:00
Chris Lattner
faa90d30f5 Do not let MaskedValueIsZero consider undef to be zero, for reasons 
explained in the comment.

This fixes UnitTests/2003-09-18-BitFieldTest on darwin

llvm-svn: 22483
 2005-07-20 18:49:28 +00:00
Chris Lattner
4c9139447d When transforming &A[i] < &A[j] -> i < j, make sure to perform the comparison 
as a signed compare.  This patch may fix PR597, but is correct in any case.

llvm-svn: 22465
 2005-07-18 23:07:33 +00:00
Chris Lattner
e102466ece Fix a problem that instcombine would hit when dealing with unreachable code. 
Because the instcombine has to scan the entire function when it starts up
to begin with, we might as well do it in DFO so we can nuke unreachable code.

This fixes: Transforms/InstCombine/2005-07-07-DeadPHILoop.ll

llvm-svn: 22348
 2005-07-07 20:40:38 +00:00
Chris Lattner
02fe175f3d Fix PR590 and Transforms/Mem2Reg/2005-06-30-ReadBeforeWrite.ll. 
The optimization for locally used allocas was not safe for allocas that
were read before they were written.  This change disables that optimization
in that case.

llvm-svn: 22318
 2005-06-30 07:29:44 +00:00
John Criswell
a6620d4a6e Doh! Forgot to LLVMify the style. 
llvm-svn: 22312
 2005-06-29 15:57:50 +00:00
John Criswell
1bafe064da Basic fix for PR#591; don't convert an fprintf() to an fwrite() if there 
is a mismatch in their character type pointers (i.e. fprintf() prints an
array of ubytes while fwrite() takes an array of sbytes).
We can probably do better than this (such as casting the ubyte to an
sbyte).

llvm-svn: 22310
 2005-06-29 15:03:18 +00:00
Chris Lattner
eb08628106 add a debug type 
llvm-svn: 22277
 2005-06-24 16:00:46 +00:00
Andrew Lenharth
08ff634c2b prevent va_arg from being hoisted from a loop 
llvm-svn: 22265
 2005-06-20 13:36:33 +00:00
Andrew Lenharth
cdaaa66e7d prevent DCE of vaarg intrinsics. This should take care of most regressions 
llvm-svn: 22263
 2005-06-19 14:41:20 +00:00
Andrew Lenharth
a9214fec08 core changes for varargs 
llvm-svn: 22254
 2005-06-18 18:34:52 +00:00
Reid Spencer
a6012f9023 Fix a problem with the strcmp optimization checking the wrong string and 
not casting to the correct type.

llvm-svn: 22250
 2005-06-18 17:46:28 +00:00
Reid Spencer
678c9a3b00 Clean up some uninitialized variables and missing return statements that 
GCC 4.0.0 compiler (sometimes incorrectly) warns about under release build.

llvm-svn: 22249
 2005-06-18 17:37:34 +00:00
Chris Lattner
11bbeace0c This is not true: (X != 13 | X < 15) -> X < 15 
It is actually always true.  This fixes PR586 and
Transforms/InstCombine/2005-06-16-SetCCOrSetCCMiscompile.ll

llvm-svn: 22236
 2005-06-17 03:59:17 +00:00
Chris Lattner
01a5794292 Don't crash when dealing with INTMIN. This fixes PR585 and 
Transforms/InstCombine/2005-06-16-RangeCrash.ll

llvm-svn: 22234
 2005-06-17 02:05:55 +00:00
Chris Lattner
8c76d5c957 Don't crash on: X = phi (X, X). 
This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll

llvm-svn: 22232
 2005-06-17 01:45:53 +00:00
Chris Lattner
226f919ead avoid constructing out of range shift amounts. 
llvm-svn: 22230
 2005-06-17 01:29:28 +00:00
Chris Lattner
f95b989825 Fix PR583 and testcase Transforms/InstCombine/2005-06-15-DivSelectCrash.ll 
llvm-svn: 22227
 2005-06-16 04:55:52 +00:00
Chris Lattner
4af04a8d54 Fix PR571, removing code that does just the WRONG thing :) 
llvm-svn: 22225
 2005-06-16 03:00:08 +00:00
Chris Lattner
b99bf21182 Fix a bug in my previous patch. Do not get the shift amount type (which 
is always ubyte, get the type being shifted).  This unbreaks espresso

llvm-svn: 22224
 2005-06-16 01:52:07 +00:00
Chris Lattner
4cff3f786f Fix PR575, patch provided by John Mellor-Crummey. Thanks! 
llvm-svn: 22223
 2005-06-15 22:49:30 +00:00
Chris Lattner
f1369e9532 Fix PR582. The rewriter can move casts around, which invalidated the 
BB iterator.  This fixes Transforms/IndVarsSimplify/2005-06-15-InstMoveCrash.ll

llvm-svn: 22221
 2005-06-15 21:29:31 +00:00
Chris Lattner
369ba5da69 Do not promote globals only used by main to locals if there are constantexprs 
or other uses hanging off of them.

llvm-svn: 22219
 2005-06-15 21:11:48 +00:00
Chris Lattner
d553048155 Fix PR577 and testcase InstCombine/2005-06-15-ShiftSetCCCrash.ll. 
Do not perform undefined out of range shifts.

llvm-svn: 22217
 2005-06-15 20:53:31 +00:00
Reid Spencer
3a30fa7ec0 Put the hack back in that removes features, causes regressions to fail, but 
allows test programs to succeed. Actual fix for this is forthcoming.

llvm-svn: 22213
 2005-06-15 18:25:30 +00:00
Reid Spencer
202eb6ff93 Unbreak several InstCombine regression checks introduced by a hack to 
fix the bzip2 test. A better hack is needed.

llvm-svn: 22209
 2005-06-13 06:41:26 +00:00
Chris Lattner
9d3c2260d0 Fix a 64-bit problem, passing (int)0 through ... instead of (void*)0 
llvm-svn: 22206
 2005-06-09 03:32:54 +00:00
Chris Lattner
092a738e18 Fix a problem on 64-bit targets where we passed (int)0 through ... instead of 
(void*)0.

llvm-svn: 22205
 2005-06-09 02:59:00 +00:00
Andrew Lenharth
e68b566084 hack to fix bzip2 (bug 571) 
llvm-svn: 22192
 2005-06-04 12:43:56 +00:00
Reid Spencer
59580db70f Make the registration hash_map static. No other module needs it. Also, 
document what its for a little better.

llvm-svn: 22164
 2005-05-21 01:27:04 +00:00
Reid Spencer
6c0f6b6458 Adjust the file comment to read a little easier. 
llvm-svn: 22163
 2005-05-21 00:57:44 +00:00
Reid Spencer
5161c39bfe Make sure ... arguments are casted to sbyte* where needed. 
llvm-svn: 22162
 2005-05-21 00:39:30 +00:00
Reid Spencer
0a43070283 Add a "brief" comment for CastToCStr 
llvm-svn: 22161
 2005-05-21 00:23:23 +00:00
Chris Lattner
d7d4a57a4f Fix mismatched type problem that crashed on cases like this: 
sprintf(P, "%s", X);

Where X is not an sbyte*.  This fixes the bug JohnMC reported on llvm-bugs.

llvm-svn: 22159
 2005-05-20 22:22:25 +00:00
Chris Lattner
b13335fff2 Fix Transforms/SimplifyCFG/switch-simplify-crash.ll 
llvm-svn: 22158
 2005-05-20 22:19:54 +00:00
Chris Lattner
df9c75fb12 teach the inliner about coldcc and noreturn functions 
llvm-svn: 22113
 2005-05-18 04:30:33 +00:00
Reid Spencer
720fbd937a Don't look for __builtin_ffs, we'll never see it from llvm-gcc and there's 
not reason to include it for other front ends.

llvm-svn: 22070
 2005-05-15 21:27:34 +00:00
Reid Spencer
58ad53e9d3 Provide this optimization as well: 
ffs(x) -> (x == 0 ? 0 : 1+llvm.cttz(x))

llvm-svn: 22068
 2005-05-15 21:19:45 +00:00
Reid Spencer
24104523b5 Duh .. you actually have to #include Config/config.h before you can test 
for one of the values that it defines!

llvm-svn: 22058
 2005-05-15 17:20:47 +00:00
Reid Spencer
9cd1000c52 Changes for ffs lib call simplification: 
* Check for availability of ffsll call in configure script
* Support ffs, ffsl, and ffsll conversion to constant value if the argument
  is constant.

llvm-svn: 22027
 2005-05-14 16:42:52 +00:00
Chris Lattner
bcd4c17bfd Preserve calling conv when hacking on calls 
llvm-svn: 22025
 2005-05-14 12:28:32 +00:00
Chris Lattner
7771ae3fcc preserve calling conventions when hacking on code 
llvm-svn: 22024
 2005-05-14 12:25:32 +00:00
Chris Lattner
214f1a8cf9 Make sure to preserve the calling convention when changing an invoke into 
a call.  This fixes Prolangs-C++/deriv2, kimwitu++, and Misc-C++/bigfib
on X86 with -enable-x86-fastcc.

llvm-svn: 22023
 2005-05-14 12:21:56 +00:00
Chris Lattner
b06ee3dd65 calling a function with the wrong CC is undefined, turn it into an unreachable 
instruction.  This is useful for catching optimizers that don't preserve
calling conventions

llvm-svn: 21928
 2005-05-13 07:09:09 +00:00