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Simon Pilgrim 33e1fb27fd Fix constant folding of fp2int to large integers 
We make the assumption in most of our constant folding code that a fp2int will target an integer of 128-bits or less, calling the APFloat::convertToInteger with only uint64_t[2] of raw bits for the result.

Fuzz testing (PR24662) showed that we don't handle other cases at all, resulting in stack overflows and all sorts of crashes.

This patch uses the APSInt version of APFloat::convertToInteger instead to better handle such cases.

Differential Revision: https://reviews.llvm.org/D31074

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298226 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-19 16:50:25 +00:00
bindings [DebugInfo] Emit address space with DW_AT_address_class attribute for pointer and reference types 2017-03-08 23:55:44 +00:00
cmake [cmake] Refactor warning flag logic to use Unix warnings with clang-cl 2017-03-16 17:05:16 +00:00
docs Fix docs-llvm-html build. 2017-03-17 22:31:13 +00:00
examples llvm/examples/Kaleidoscope/BuildingAJIT: More fixup corresponding to r295636. 2017-02-20 10:07:41 +00:00
include [CodeGen] Update hasSideEffects comment. NFC. 2017-03-19 16:12:45 +00:00
lib Fix constant folding of fp2int to large integers 2017-03-19 16:50:25 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +00:00
resources
runtimes
test Fix constant folding of fp2int to large integers 2017-03-19 16:50:25 +00:00
tools LTO: Fix a potential race condition in the caching API. 2017-03-17 00:34:07 +00:00
unittests SmallString doesn't have implicit conversion from const char*. 2017-03-17 00:28:23 +00:00
utils Add SystemZ to utils/update_llc_test_checks.py. 2017-03-17 07:11:42 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore [.gitignore] Update .gitignore to ignore a nested build directory 2017-02-24 23:09:30 +00:00
CMakeLists.txt remove Cmake option for LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING 2017-03-07 00:51:07 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure
CREDITS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT

README.txt 

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.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.