Nadav Rotem 34ca89afa8 This patch addresses the problem of poor code generation for the zext ... v8i8 -> v8i32 on AVX machines. The codegen often scalarizes ANY_EXTEND nodes. The DAGCombiner has two optimizations that can mitigate the problem. First, if all of the operands of a BUILD_VECTOR node are extracted from an ZEXT/ANYEXT nodes, then it is possible to create a new simplified BUILD_VECTOR which uses UNDEFS/ZERO values to eliminate the scalar ZEXT/ANYEXT nodes. Second, another dag combine optimization lowers BUILD_VECTOR into a shuffle vector instruction. In the case of zext v8i8->v8i32 on AVX, a value in an XMM register is to be shuffled into a wide YMM register. This patch modifes the second optimization and allows the creation of shuffle vectors even when the newly generated vector and the original vector from which we extract the values are of different types. llvm-svn: 150340		2012-02-12 15:05:31 +00:00
clang	Fix broken link. I believe this has been broken for at least 7 months.	2012-02-12 09:11:39 +00:00
compiler-rt	Back out some changes that accidentally committed.	2012-02-10 16:41:46 +00:00
debuginfo-tests	Revert previous patch as the corresponding clang patch was reverted.	2012-01-26 07:01:33 +00:00
libclc	Update repository paths.	2012-01-08 22:31:18 +00:00
libcxx	Fix up narrowing conversions in switch statement.	2012-02-08 19:15:06 +00:00
libcxxabi	__gxx_personality_v0 and __cxa_call_unexpected are complete on darwin and I *think* linux (not positive), but still unimplemented on arm.	2012-02-03 20:53:52 +00:00
lld	Add support for UndefinedAtom in yaml and native format. Add test cases with undefined atoms	2012-02-07 02:59:54 +00:00
lldb	Made the "--no-inlines" option on	2012-02-11 01:22:21 +00:00
llvm	This patch addresses the problem of poor code generation for the zext	2012-02-12 15:05:31 +00:00
polly	CodeGen: Maintain a valid CFG during code generation	2012-02-12 12:09:53 +00:00