David Majnemer c86bdc73e8 InstCombine: Don't unconditionally preserve 'nsw' when shrinking constants ...

Consider:
  %add = add nsw i32 %a, -16777216
  %and = and i32 %add, 255

Regardless of whether or not we demand the sign bit of %add, we cannot
replace -16777216 with 2130706432 without also removing 'nsw' from the
instruction.

This fixes PR20377.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216261 91177308-0d34-0410-b5e6-96231b3b80d8

2014-08-22 07:56:32 +00:00

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Analysis

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Assembler

IR: Implement uselistorder assembly directives

2014-08-19 21:30:15 +00:00

Bindings

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Bitcode

verify-uselistorder: Force -preserve-bc-use-list-order

2014-08-19 21:08:27 +00:00

BugPoint

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CodeGen

[FastISel][AArch64] Add support for variable shift.

2014-08-21 23:06:07 +00:00

DebugInfo

Use DILexicalBlockFile, rather than DILexicalBlock, to track discriminator changes to ensure discriminator changes don't introduce new DWARF DW_TAG_lexical_blocks.

2014-08-21 22:45:21 +00:00

ExecutionEngine

[MCJIT] Add an i386 RuntimeDyldMachO test case.

2014-08-19 21:26:36 +00:00

Feature

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FileCheck

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Instrumentation

[dfsan] Fix non-determinism bug in non-zero label check annotator.

2014-08-22 01:18:18 +00:00

Integer

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JitListener

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Linker

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LTO

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MC

[mips] Add assembler support for .set arch=x directive.

2014-08-19 14:22:52 +00:00

Object

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Other

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TableGen

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tools

Rewrite the gold plugin to fix pr19901.

2014-08-21 20:28:55 +00:00

Transforms

InstCombine: Don't unconditionally preserve 'nsw' when shrinking constants

2014-08-22 07:56:32 +00:00

Unit

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Verifier

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YAMLParser

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.clang-format

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CMakeLists.txt

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lit.cfg

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lit.site.cfg.in

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Makefile

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Makefile.tests

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TestRunner.sh

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