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52b925e4c9
llvm-mirror/lib
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Silviu Baranga 52b925e4c9 [InstCombine] Preserve fast math flags when combining PHIs 
Summary:
When optimizing PHIs which have inputs floating point binary
operators, we preserve all IR flags except the fast math
flags.

This change removes the logic which tracked some of the IR flags
(no wrap, exact) and replaces it by doing an and on the IR flags of
all inputs to the PHI - which will also handle the fast math
flags.

Reviewers: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D19370

llvm-svn: 267139
2016-04-22 11:21:36 +00:00
..
Analysis Revert "Initial implementation of optimization bisect support." 2016-04-22 06:51:37 +00:00
AsmParser IR: Enable debug info type ODR uniquing for forward decls 2016-04-19 18:00:19 +00:00
Bitcode ValueMapper/Enumerator: Clean up code in post-order traversals, NFC 2016-04-22 02:33:06 +00:00
CodeGen Fix -Wunused-variable in non-asserts build. 2016-04-22 09:50:31 +00:00
DebugInfo Fix PDB warnings and test 2016-04-21 22:37:55 +00:00
ExecutionEngine [RuntimeDyld] Fix conservative over-allocation of memory for common symbols. 2016-04-21 20:08:06 +00:00
Fuzzer [libFuzzer] added -detect_leaks flag (0 by default for now). When enabled, it will help finding leaks while fuzzing 2016-04-20 00:24:21 +00:00
IR Revert "Initial implementation of optimization bisect support." 2016-04-22 06:51:37 +00:00
IRReader Remove autoconf support 2016-01-26 21:29:08 +00:00
LibDriver LibDriver: Silently do nothing when provided no inputs. 2016-04-13 19:36:04 +00:00
LineEditor Fix Clang-tidy modernize-deprecated-headers warnings in some files; other minor fixes. 2016-03-28 17:40:08 +00:00
Linker Fix recursive -only-needed. 2016-04-21 14:56:33 +00:00
LTO [ThinLTO] Remove unused/incomplete lazy summary reading support (NFC) 2016-04-22 01:52:00 +00:00
MC MachO: enable .data_region directives everywhere 2016-04-21 23:00:17 +00:00
Object Clean the API for CollectAsmUndefinedRefs, taking a Triple and a String InlineAsm instead of a Module (NFC) 2016-04-22 04:58:12 +00:00
ObjectYAML [lanai] Add Lanai backend. 2016-03-28 13:09:54 +00:00
Option Option parser: class for consuming a joined arg in addition to all remaining args 2016-04-15 00:23:30 +00:00
Passes Port DemandedBits to the new pass manager. 2016-04-18 23:55:01 +00:00
ProfileData [ProfileData] Report errors from InstrProfSymtab::create 2016-04-21 21:07:25 +00:00
Support CachePruning: early exit if no path supplied 2016-04-21 06:43:45 +00:00
TableGen [NFC] Header cleanup 2016-04-18 09:17:29 +00:00
Target [mips][microMIPS] Implement SLT, SLTI, SLTIU, SLTU microMIPS32r6 instructions 2016-04-22 11:18:40 +00:00
Transforms [InstCombine] Preserve fast math flags when combining PHIs 2016-04-22 11:21:36 +00:00
CMakeLists.txt Move ObjectYAML code to a new library. 2016-03-01 19:15:06 +00:00
LLVMBuild.txt Add LLVMBuild for ObjectYAML. 2016-03-01 21:29:33 +00:00