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08be907489
llvm-mirror/lib
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James Molloy 08be907489 Be less conservative about forming IT blocks. 
In http://reviews.llvm.org/rL215382, IT forming was made more conservative under
the belief that a flag-setting instruction was unpredictable inside an IT block on ARMv6M.

But actually, ARMv6M doesn't even support IT blocks so that's impossible. In the ARMARM for
v7M, v7AR and v8AR it states that the semantics of such an instruction changes inside an
IT block - it doesn't set the flags. So actually it is fine to use one inside an IT block
as long as the flags register is dead afterwards.

This gives significant performance improvements in a variety of MPEG based workloads.

Differential revision: http://reviews.llvm.org/D11680

llvm-svn: 243869
2015-08-03 09:24:48 +00:00
..
Analysis De-constify pointers to Type since they can't be modified. NFC 2015-08-01 22:20:21 +00:00
AsmParser De-constify pointers to Type since they can't be modified. NFC 2015-08-01 22:20:21 +00:00
Bitcode DI: Remove DW_TAG_arg_variable and DW_TAG_auto_variable 2015-07-31 18:58:39 +00:00
CodeGen AsmPrinter: Split out non-DIE printing from DIE::print(), NFC 2015-08-02 20:46:49 +00:00
DebugInfo [dwarfdump] Ignore scattered relocations for mach-o. 2015-07-31 20:22:50 +00:00
ExecutionEngine De-constify pointers to Type since they can't be modified. NFC 2015-08-01 22:20:21 +00:00
Fuzzer [libFuzzer] more refactoring of the Mutator and adding tests to it 2015-08-01 02:23:06 +00:00
IR Add support to set/get ordering for load/store from the C API 2015-08-02 12:16:57 +00:00
IRReader Return a unique_ptr from getLazyBitcodeModule and parseBitcodeFile. NFC. 2015-06-16 22:27:55 +00:00
LibDriver Add support for producing thin archives in llvm-lib. 2015-07-17 16:01:11 +00:00
LineEditor
Linker Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
LTO Remove access to the DataLayout in the TargetMachine 2015-07-24 16:04:22 +00:00
MC Use range-based for loops. NFC 2015-08-02 22:34:02 +00:00
Object Use early return NFC. 2015-08-03 00:10:33 +00:00
Option Add an ArgList::AddAllArgs that accepts a vector of OptSpecifier. 2015-07-29 17:34:41 +00:00
Passes
ProfileData Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Support Add amdopencl environment to triple 2015-07-30 08:16:51 +00:00
TableGen TableGen: Support folding casts from bits to int 2015-07-31 01:12:06 +00:00
Target Be less conservative about forming IT blocks. 2015-08-03 09:24:48 +00:00
Transforms ValueMapper: Only check for cycles if operands change 2015-08-03 03:45:32 +00:00
CMakeLists.txt LibDriver, llvm-lib: introduce. 2015-06-09 21:50:22 +00:00
LLVMBuild.txt Wrap some long lines in LLVMBuild files. NFC 2015-06-12 18:44:57 +00:00
Makefile LibDriver, llvm-lib: introduce. 2015-06-09 21:50:22 +00:00