1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-30 07:22:55 +01:00
Commit Graph

973 Commits

Author SHA1 Message Date
Chris Lattner
d59fba1bce Update to use the new MathExtras.h support for log2 computation.
Patch contributed by Jim Laskey!

llvm-svn: 22592
2005-08-02 19:16:58 +00:00
Chris Lattner
05431d5ca5 Like the comment says, do not insert cast instructions before phi nodes
llvm-svn: 22586
2005-08-02 03:31:14 +00:00
Chris Lattner
4187b8bebe add a comment, make a check more lenient
llvm-svn: 22581
2005-08-02 02:52:02 +00:00
Chris Lattner
38b0e93bd4 Simplify for loop, clear a per-loop map after processing each loop
llvm-svn: 22580
2005-08-02 02:44:31 +00:00
Chris Lattner
954842274e Add a comment
Make LSR ignore GEP's that have loop variant base values, as we currently
cannot codegen them

llvm-svn: 22576
2005-08-02 01:32:29 +00:00
Chris Lattner
ec624cdcb5 Fix an iterator invalidation problem
llvm-svn: 22575
2005-08-02 00:41:11 +00:00
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
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
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
a9214fec08 core changes for varargs
llvm-svn: 22254
2005-06-18 18:34:52 +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
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
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
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
Andrew Lenharth
e68b566084 hack to fix bzip2 (bug 571)
llvm-svn: 22192
2005-06-04 12:43:56 +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
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
Chris Lattner
b9d99c9b2b When lowering invokes to calls, amke sure to preserve the calling conv. This
fixes Ptrdist/anagram with x86 llcbeta

llvm-svn: 21925
2005-05-13 06:27:02 +00:00
Chris Lattner
dfe45a21b1 Prefer int 0 instead of long 0 for GEP arguments.
llvm-svn: 21924
2005-05-13 06:10:12 +00:00
Chris Lattner
758f2fe1a3 Fix Reassociate/shifttest.ll
llvm-svn: 21839
2005-05-10 03:39:25 +00:00
Chris Lattner
f221558c21 If a function contains no allocas, all of the calls in it are trivially
suitable for tail calls.

llvm-svn: 21836
2005-05-09 23:51:13 +00:00
Chris Lattner
d3bb28d97a implement and.ll:test33
llvm-svn: 21809
2005-05-09 04:58:36 +00:00
Chris Lattner
d5a353a675 Implement Reassociate/mul-neg-add.ll
llvm-svn: 21788
2005-05-08 21:41:35 +00:00
Chris Lattner
f535f6e808 Bail out earlier
llvm-svn: 21786
2005-05-08 21:33:47 +00:00
Chris Lattner
39f74def7f Teach reassociate that 0-X === X*-1
llvm-svn: 21785
2005-05-08 21:28:52 +00:00
Chris Lattner
319ac8f822 Fix PR557 and basictest[34].ll.
This makes reassociate realize that loads should be treated as unmovable, and
gives distinct ranks to distinct values defined in the same basic block, allowing
reassociate to do its thing.

llvm-svn: 21783
2005-05-08 20:57:04 +00:00
Chris Lattner
b5de308c5f Add debugging information
llvm-svn: 21781
2005-05-08 20:09:57 +00:00
Chris Lattner
e74082156b eliminate gotos
llvm-svn: 21780
2005-05-08 19:48:43 +00:00
Chris Lattner
a9d5fdd4fd Improve reassociation handling of inverses, implementing inverses.ll.
llvm-svn: 21778
2005-05-08 18:59:37 +00:00
Chris Lattner
afbdc0b969 clean up and modernize this pass.
llvm-svn: 21776
2005-05-08 18:45:26 +00:00
Chris Lattner
7b41539f32 Strength reduce SAR into SHR if there is no way sign bits could be shifted
in.  This tends to get cases like this:

  X = cast ubyte to int
  Y = shr int X, ...

Tested by: shift.ll:test24

llvm-svn: 21775
2005-05-08 17:34:56 +00:00
Chris Lattner
c2670a0da6 Refactor some code
llvm-svn: 21772
2005-05-08 00:19:31 +00:00
Chris Lattner
cd7caaa866 Handle some simple cases where we can see that values get annihilated.
llvm-svn: 21771
2005-05-08 00:08:33 +00:00
Chris Lattner
1e84d885b7 Fix a miscompilation of crafty by clobbering the "A" variable.
llvm-svn: 21770
2005-05-07 23:49:08 +00:00
Chris Lattner
5662127ed6 Rewrite the guts of the reassociate pass to be more efficient and logical. Instead
of trying to do local reassociation tweaks at each level, only process an expression
tree once (at its root).  This does not improve the reassociation pass in any real way.

llvm-svn: 21768
2005-05-07 21:59:39 +00:00