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Evgeniy Stepanov cff19ee233 [asan] Prevent rematerialization of &__asan_shadow.

Summary:
In the mode when ASan shadow base is computed as the address of an
external global (__asan_shadow, currently on android/arm32 only),
regalloc prefers to rematerialize this value to save register spills.
Even in -Os. On arm32 it is rather expensive (2 loads + 1 constant
pool entry).

This changes adds an inline asm in the function prologue to suppress
this behavior. It reduces AsanTest binary size by 7%.

Reviewers: pcc, vitalybuka

Subscribers: aemerson, kristof.beyls, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D40048

llvm-svn: 318235

2017-11-15 00:11:51 +00:00

clang

Simplify CpuIs code to use include from LLVM

2017-11-15 00:11:24 +00:00

clang-tools-extra

add new check for property declaration

2017-11-13 23:54:31 +00:00

compiler-rt

[profile] Update InstrProfData.inc to sync with llvm

2017-11-14 23:57:58 +00:00

debuginfo-tests

Revert "Update test_debuginfo.pl script to point to new tree location."

2017-11-13 23:33:29 +00:00

libclc

native_powr: Switch implementation to native_exp2 and native_log2

2017-11-14 21:55:41 +00:00

libcxx

Add two new macros: _LIBCPP_NODISCARD_AFTER_CXX17 and _LIBCPP_CONSTEXPR_AFTER_CXX17, along with a way to turn off the NODISCARD one: _LIBCPP_DISABLE_NODISCARD_AFTER_CXX17. No one is using these yet, but we will be ... soon

2017-11-14 22:26:50 +00:00

libcxxabi

Remove excess whitespace from syslog message; NFC

2017-11-13 15:40:31 +00:00

libunwind

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lld

Note that the benchmark set has been updated.

2017-11-14 17:48:48 +00:00

lldb

Update xcode project file to track ArchSpec.cpp

2017-11-14 23:15:35 +00:00

llgo

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llvm

[asan] Prevent rematerialization of &__asan_shadow.

2017-11-15 00:11:51 +00:00

openmp

[OpenMP] Remove the unused testsuite/ directory

2017-11-13 17:44:48 +00:00

parallel-libs

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polly

[polly] Remove redundant return [NFC]

2017-11-10 20:33:08 +00:00

README.md

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README.md

Low Level Virtual Machine (LLVM)

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.

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C 13%

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Other 2.8%