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David Majnemer fe58d13a17 [InstCombine] Clear out nsw/nuw if we modify computation in the chain 
An nsw/nuw operation relies on the values feeding into it to not
overflow if 'poison' is not to be produced.  This means that
optimizations which make modifications to the bottom of a chain (like
SimplifyDemandedBits) must strip out nsw/nuw if they cannot ensure that
they will be preserved.

This fixes PR23309.

llvm-svn: 235544
 		2015-04-22 20:59:28 +00:00
..
Analysis Fix a type mismatch assert in SCEV division 2015-04-22 15:06:40 +00:00
Assembler [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
Bindings DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
Bitcode Have more strict type checks when creating BinOp nodes in BitcodeReader 2015-04-22 09:06:21 +00:00
BugPoint bugpoint Enhancement. 2015-04-20 23:42:22 +00:00
CodeGen [Hexagon] Use A2_tfrsi for constant pool and jump table addresses 2015-04-22 18:25:53 +00:00
DebugInfo DebugInfo: Fixup r235149 after IR change in r235145 2015-04-17 00:37:53 +00:00
ExecutionEngine [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
Feature [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
FileCheck FileCheck: Add CHECK-SAME 2015-02-26 04:53:00 +00:00
Instrumentation [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
Integer [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
JitListener DebugInfo: Move new hierarchy into place 2015-03-03 17:24:31 +00:00
LTO [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
Linker Linker: Add flag to override linkage rules 2015-04-22 04:11:00 +00:00
MC AVX-512: Added VPMOVx2M instructions for SKX, 2015-04-21 14:38:31 +00:00
Object Support arm32 R_ARM_V4BX relocation format 2015-04-22 15:26:43 +00:00
Other [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
SymbolRewriter SymbolRewriter: allow rewriting with comdats 2015-01-27 22:57:39 +00:00
TableGen Add support for v1i128 type. 2015-04-17 16:11:05 +00:00
Transforms [InstCombine] Clear out nsw/nuw if we modify computation in the chain 2015-04-22 20:59:28 +00:00
Unit
…
Verifier [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
YAMLParser
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tools [Mips] Support DT_MIPS_OPTIONS dynamic section tag in the llvm-readobj 2015-04-20 05:34:48 +00:00
.clang-format
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CMakeLists.txt test: Fix the dependencies for the check-llvm-* targets 2015-03-25 08:07:47 +00:00
Makefile test: Make a start on a test suite for libLTO. 2015-03-19 23:55:38 +00:00
Makefile.tests
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TestRunner.sh
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lit.cfg Tell lit.cfg about more Windows triples. 2015-03-20 22:08:40 +00:00
lit.site.cfg.in test: Make a start on a test suite for libLTO. 2015-03-19 23:55:38 +00:00