Andrea Di Biagio 54b0949af9 [X86] Teach how to combine horizontal binop even in the presence of undefs. ... Before this change, the backend was unable to fold a build_vector dag node with UNDEF operands into a single horizontal add/sub. This patch teaches how to combine a build_vector with UNDEF operands into a horizontal add/sub when possible. The algorithm conservatively avoids to combine a build_vector with only a single non-UNDEF operand. Added test haddsub-undef.ll to verify that we correctly fold horizontal binop even in the presence of UNDEFs. llvm-svn: 211265		2014-06-19 10:29:41 +00:00
clang	[OPENMP] Improved diagnostic messages for vars with the predetermined data sharing attributes and reformatting	2014-06-19 09:13:45 +00:00
clang-tools-extra	Unbreak the build after r211244.	2014-06-19 00:43:19 +00:00
compiler-rt	[sanitizer] Intercept pthread_*attr_get*.	2014-06-19 10:19:57 +00:00
debuginfo-tests	relax testcase for LLDB output format compatibility.	2014-03-19 23:06:18 +00:00
libclc	Add pown	2014-06-18 19:42:23 +00:00
libcxx	Formatting improvements in the <string_view> synopsis suggested by RSmith. No functionality change.	2014-06-18 17:44:04 +00:00
libcxxabi	Add a FAQ section, with a question about why the std::exception class destructors live in libc++abi	2014-06-11 16:54:09 +00:00
lld	[Mips] Make r26-1.test test case independent from external input files.	2014-06-19 10:18:58 +00:00
lldb	Actually make a real scoped locker rather than constructing one that gets immediately thrown away...	2014-06-18 23:40:13 +00:00
llvm	[X86] Teach how to combine horizontal binop even in the presence of undefs.	2014-06-19 10:29:41 +00:00
openmp	CMake: remove duplicated source file from list	2014-06-02 13:09:24 +00:00
polly	Missing reduction detection test cases	2014-06-18 23:08:14 +00:00