Andrea Di Biagio f27500040b [InstCombine][X86] Improved folding of calls to Intrinsic::x86_sse4a_insertqi. ... This patch teaches the instruction combiner how to fold a call to 'insertqi' if the 'length field' (3rd operand) is set to zero, and if the sum between field 'length' and 'bit index' (4th operand) is bigger than 64. From the AMD64 Architecture Programmer's Manual: 1. If the sum of the bit index + length field is greater than 64, then the results are undefined; 2. A value of zero in the field length is defined as a length of 64. This patch improves the existing combining logic for intrinsic 'insertqi' adding extra checks to address both point 1. and point 2. Differential Revision: http://reviews.llvm.org/D6583 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224054 91177308-0d34-0410-b5e6-96231b3b80d8		2014-12-11 20:44:59 +00:00
..
Analysis	Fix PR21694. r219517 added a use of SCEV divide in HowFarToZero computation. This divide can produce incorrect results as we are using an unsigned divide for what should be a modular divide. This change reverts back to a more conservative computation using trailing zeros.	2014-12-10 22:53:52 +00:00
AsmParser	AsmParser: Don't crash on an ill-formed MDNodeVector	2014-12-11 20:44:09 +00:00
Bitcode	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
CodeGen	This reverts commit r224043 and r224042.	2014-12-11 20:03:57 +00:00
DebugInfo	Make DWARFAcceleratorTable::dump() const.	2014-11-20 16:21:11 +00:00
ExecutionEngine	Move three methods only used by MCJIT to MCJIT.	2014-12-10 20:46:55 +00:00
IR	Fix LLVMContext to match what MDKind names that the LL parser permits. Fixes PR21799!	2014-12-11 02:10:28 +00:00
IRReader	Remove unused variable. NFC.	2014-11-06 23:16:57 +00:00
LineEditor
Linker	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
LTO	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
MC	clang-formatted ranged loops and assignment, NFC.	2014-12-04 08:30:39 +00:00
Object	Move three methods only used by MCJIT to MCJIT.	2014-12-10 20:46:55 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	llvm-cov: Sink some reporting logic into CoverageMapping	2014-11-14 01:50:32 +00:00
Support	Remove a convoluted way of calling close by moving the call to the only caller.	2014-12-11 20:12:55 +00:00
TableGen	Use range-based for loops. NFC	2014-12-11 07:04:54 +00:00
Target	This reverts commit r224043 and r224042.	2014-12-11 20:03:57 +00:00
Transforms	[InstCombine][X86] Improved folding of calls to Intrinsic::x86_sse4a_insertqi.	2014-12-11 20:44:59 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile