Commit Graph

174 Commits

Author SHA1 Message Date
Matt Arsenault 130e0ef6f4 Respect address space sizes in isEliminableCastPair.
This avoids constant folding bitcast/ptrtoint/inttoptr combinations
that have illegal bitcasts between differently sized address spaces.

llvm-svn: 187455
2013-07-30 22:27:10 +00:00
Matt Arsenault b4019ae13c Revert "Remove isCastable since nothing uses it now"
Apparently dragonegg uses it.

llvm-svn: 187454
2013-07-30 22:02:14 +00:00
Matt Arsenault f63dfbb198 Remove isCastable since nothing uses it now
llvm-svn: 187448
2013-07-30 21:11:17 +00:00
Matt Arsenault cacbb2377a Change behavior of calling bitcasted alias functions.
It will now only convert the arguments / return value and call
the underlying function if the types are able to be bitcasted.
This avoids using fp<->int conversions that would occur before.

llvm-svn: 187444
2013-07-30 20:45:05 +00:00
Matt Arsenault 50a16a4275 Fix copypaste error in test.
Thename says it's an i32*, but it was actually creating another i8*

llvm-svn: 185239
2013-06-28 23:24:10 +00:00
Bill Wendling e0d97dfa4e Add unit test to test a trivial verifier check.
llvm-svn: 184338
2013-06-19 19:26:44 +00:00
Arnold Schwaighofer eb4f2d63e9 Add missing PatternMatch.cpp to CMakeLists.txt
llvm-svn: 181147
2013-05-05 02:14:28 +00:00
Arnold Schwaighofer e972d03f64 PatternMatch: Matcher for (un)ordered floating point min/max
Add support for matching 'ordered' and 'unordered' floating point min/max
constructs.

In LLVM we can express min/max functions as a combination of compare and select.
We have support for matching such constructs for integers but not for floating
point. In floating point math there is no total order because of the presence of
'NaN'. Therefore, we have to be careful to preserve the original fcmp semantics
when interpreting floating point compare select combinations as a minimum or
maximum function. The resulting 'ordered/unordered' floating point maximum
function has to select the same value as the select/fcmp combination it is based
on.

 ordered_max(x,y)   = max(x,y) iff x and y are not NaN, y otherwise
 unordered_max(x,y) = max(x,y) iff x and y are not NaN, x otherwise
 ordered_min(x,y)   = min(x,y) iff x and y are not NaN, y otherwise
 unordered_min(x,y) = min(x,y) iff x and y are not NaN, x otherwise

This matches the behavior of the underlying select(fcmp(olt/ult/.., L, R), L, R)
construct.

Any code using this predicate has to preserve this semantics.

A follow-up patch will use this to implement floating point min/max reductions
in the vectorizer.

radar://13723044

llvm-svn: 181143
2013-05-05 01:54:46 +00:00
Benjamin Kramer eee73f5fcf Fix a disconcerting bug in Value::isUsedInBasicBlock, which gave wrong answers for blocks larger than 3 instrs.
Also add a unit test. PR15727.

llvm-svn: 179370
2013-04-12 08:33:11 +00:00
Dan Gohman 20a2ae9df5 Change GetPointerBaseWithConstantOffset's DataLayout argument from a
reference to a pointer, so that it can handle the case where DataLayout
is not available and behave conservatively.

llvm-svn: 174024
2013-01-31 02:00:45 +00:00
Bill Wendling a7a55ee2fc Fix test to not use the AttributeSet's AttributeWithIndex creation method.
llvm-svn: 173608
2013-01-27 03:39:10 +00:00
NAKAMURA Takumi 508baf7900 llvm/unittests: Use OwningPtr to fix --vg-leak.
llvm-svn: 173240
2013-01-23 08:33:13 +00:00
NAKAMURA Takumi 6d951b7cff IRTests/WaymarkTest.cpp: Fix in --vg-leak.
llvm-svn: 173239
2013-01-23 08:33:05 +00:00
NAKAMURA Takumi d86cd7855b IRTests/IRBuilderTest.cpp: GetIntTy: Delete DL at yourself since it is not linked.
llvm-svn: 173238
2013-01-23 08:31:28 +00:00
NAKAMURA Takumi 7493658645 IRTests/IRBuilderTest.cpp: Let GV added to the module.
It fixes --vg-leak.

llvm-svn: 173237
2013-01-23 08:30:39 +00:00
NAKAMURA Takumi 0c8f08d305 IRTests/ConstantsTest.cpp: AsInstructionsTest: Delete each instruction immediately if it is not linked.
llvm-svn: 173236
2013-01-23 08:30:26 +00:00
NAKAMURA Takumi 773f74cb10 Untabify.
llvm-svn: 173235
2013-01-23 08:30:21 +00:00
NAKAMURA Takumi afda71e911 DominatorTreeTest.cpp: Add the file header.
llvm-svn: 173233
2013-01-23 08:30:10 +00:00
Evgeniy Stepanov 2338264ad9 Allow vectors in CreatePointerCast of constants.
llvm-svn: 172615
2013-01-16 14:41:46 +00:00
Evgeniy Stepanov a259b26c50 A test for r172535.
llvm-svn: 172614
2013-01-16 14:38:50 +00:00
Dmitri Gribenko fb37aca9d5 Improve r172464: const_cast is not needed if the variable is not const
llvm-svn: 172474
2013-01-14 21:23:37 +00:00
David Greene 4c66a58b64 Fix Casts
Use const_cast<> to avoid cast-away-const errors.

llvm-svn: 172464
2013-01-14 21:04:35 +00:00
Benjamin Kramer 410780b82c Add a unit test to verifies that attribute uniquing works so it doesn't break again.
The folding set details can be subtle and broke twice in the last couple of weeks.

llvm-svn: 172313
2013-01-12 14:13:45 +00:00
Chandler Carruth 74b6a77d75 Rename the VMCore unittest tree to IR. Somehow was missed when doing the
library rename.

llvm-svn: 171747
2013-01-07 15:35:46 +00:00