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Sanjay Patel add1397ba7 [InstCombine] improve demanded vector elements analysis of insertelement 
Recurse instead of returning on the first found optimization. Also, return early in the caller
instead of continuing because that allows another round of simplification before we might
potentially lose undef information from a shuffle mask by eliminating the shuffle.

As noted in the review, we could probably do better and be more efficient by moving all of
demanded elements into a separate pass, but this is yet another quick fix to instcombine.

Differential Revision: https://reviews.llvm.org/D37236

llvm-svn: 312248
2017-08-31 15:57:17 +00:00
..
Analysis Remove an unnecessary const_cast. 2017-08-28 23:00:13 +00:00
AsmParser Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
BinaryFormat [BinaryFormat] Fix out of bounds read. 2017-08-31 12:50:42 +00:00
Bitcode Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
CodeGen [codeview] Generalize DIExpression parsing to handle load chains 2017-08-31 15:56:49 +00:00
DebugInfo [dwarfdump] Pretty print location expressions and location lists 2017-08-29 21:41:21 +00:00
Demangle [ItaniumDemangle] Fix a exponential string copying bug 2017-05-28 23:24:52 +00:00
ExecutionEngine [Orc] Add a comment about member variable dependencies to OrcMCJITReplacement. 2017-08-31 01:09:56 +00:00
Fuzzer Moving libFuzzer from LLVM to compiler-rt. 2017-08-21 23:25:12 +00:00
FuzzMutate Re-apply "Introduce FuzzMutate library" 2017-08-21 22:57:06 +00:00
IR Revert "Revert r312139 "Verifier: Verify the correctness of fragment expressions attached to globals."" 2017-08-31 00:07:33 +00:00
IRReader
LineEditor
Linker Linker: Create a function declaration when moving a non-prevailing alias of function type. 2017-08-10 01:07:44 +00:00
LTO Fix thinlto cache key computation for cfi-icall. 2017-08-09 23:24:07 +00:00
MC Untabify. 2017-08-28 06:47:47 +00:00
Object [Object] Verify object sizes before handing out StringRefs pointing out 2017-08-31 12:27:10 +00:00
ObjectYAML [yaml2obj][ELF] Make symbols optional for relocations 2017-08-30 23:13:31 +00:00
Option Revert "Revert r311552: [Bash-autocompletion] Add support for static analyzer flags" 2017-08-29 00:09:31 +00:00
Passes [PM] Switch the CGSCC debug messages to use the standard LLVM debug 2017-08-11 05:47:13 +00:00
ProfileData Fix the bug when SampleProfileWriter writes out number of callsites. 2017-08-03 00:09:18 +00:00
Support Untabify. 2017-08-28 06:47:47 +00:00
TableGen Untabify. 2017-08-28 06:47:47 +00:00
Target Revert r311525: "[XRay][CodeGen] Use PIC-friendly code in XRay sleds; remove synthetic references in .text" 2017-08-31 15:17:17 +00:00
Testing Mark LLVMTestingSupport as not installed in LLVMBuild. 2017-06-19 22:01:50 +00:00
ToolDrivers Simplify writeArchive return type. 2017-08-30 22:11:03 +00:00
Transforms [InstCombine] improve demanded vector elements analysis of insertelement 2017-08-31 15:57:17 +00:00
WindowsManifest Revert "llvm-mt: Fix release of OutputDoc" 2017-08-31 05:32:36 +00:00
XRay [XRay][tools] Support new kinds of instrumentation map entries 2017-08-21 00:14:06 +00:00
CMakeLists.txt Moving libFuzzer from LLVM to compiler-rt. 2017-08-21 23:25:12 +00:00
LLVMBuild.txt Re-apply "Introduce FuzzMutate library" 2017-08-21 22:57:06 +00:00