Ahmed Bougacha 8b5527deef [X86] Combine (cmov (and/or (setcc) (setcc))) into (cmov (cmov)). ...

Fold and/or of setcc's to double CMOV:

(CMOV F, T, ((cc1 | cc2) != 0)) -> (CMOV (CMOV F, T, cc1), T, cc2)
(CMOV F, T, ((cc1 & cc2) != 0)) -> (CMOV (CMOV T, F, !cc1), F, !cc2)

When we can't use the CMOV instruction, it might increase branch
mispredicts.  When we can, or when there is no mispredict, this
improves throughput and reduces register pressure.

These can't be catched by generic combines, because the pattern can
appear when legalizing some instructions (such as fcmp une).

rdar://19767934
http://reviews.llvm.org/D7634


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231045 91177308-0d34-0410-b5e6-96231b3b80d8

2015-03-03 01:09:14 +00:00

..

Analysis

TLI: Factor out sanitizeFunctionName. NFC.

2015-03-02 23:24:40 +00:00

AsmParser

Teach the LLParser to fail gracefully when it encounters an invalid label name.

2015-03-02 05:25:09 +00:00

Bitcode

Add missing includes. make_unique proliferated everywhere.

2015-03-01 21:28:53 +00:00

CodeGen

Remap arguments and non-alloca values used by outlined C++ exception handlers.

2015-03-03 00:41:03 +00:00

DebugInfo

[llvm-pdbdump] Many minor fixes and improvements

2015-03-02 04:39:56 +00:00

ExecutionEngine

Add missing includes. make_unique proliferated everywhere.

2015-03-01 21:28:53 +00:00

Fuzzer

[fuzzer] one more experimental search mode: -use_coverage_pairs=1

2015-02-20 03:02:37 +00:00

IR

AsmWriter: Only print one space after the load type

2015-03-02 15:24:41 +00:00

IRReader

Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.

2015-02-11 03:28:02 +00:00

LineEditor

Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.

2015-02-11 03:28:02 +00:00

Linker

Restore LLVMLinkModules C API until it is properly deprecated.

2015-03-02 18:59:38 +00:00

LTO

[LTO API] fix memory leakage introduced at r230290.

2015-02-25 21:20:53 +00:00

MC

Remove useless .debug_macinfo section setup.

2015-03-02 19:52:42 +00:00

Object

Use read{16,32,64}{le,be}() instead of *reinterpret_cast<u{little,big}{16,32,64}_t>().

2015-03-02 21:19:12 +00:00

Option

Prefer SmallVector::append/insert over push_back loops.

2015-02-17 15:29:18 +00:00

ProfileData

Add missing includes. make_unique proliferated everywhere.

2015-03-01 21:28:53 +00:00

Support

Use read{16,32,64}{le,be}() instead of *reinterpret_cast<u{little,big}{16,32,64}_t>().

2015-03-02 21:19:12 +00:00

TableGen

Add missing includes. make_unique proliferated everywhere.

2015-03-01 21:28:53 +00:00

Target

[X86] Combine (cmov (and/or (setcc) (setcc))) into (cmov (cmov)).

2015-03-03 01:09:14 +00:00

Transforms

LowerBitSets: Use byte arrays instead of bit sets to represent in-memory bit sets.

2015-03-03 00:49:28 +00:00

CMakeLists.txt

Reverting r227452, which adds back the fuzzer library. Now excluding the fuzzer library based on LLVM_USE_SANITIZE_COVERAGE being set or unset.

2015-01-29 16:58:29 +00:00

LLVMBuild.txt

…

Makefile

Move DebugInfo to DebugInfo/DWARF.

2015-01-30 18:07:45 +00:00