David Majnemer e0134d95cc InstCombine: Annotate sub with nsw when we prove it's safe ...

We can prove that a 'sub' can be a 'sub nsw' under certain conditions:
- The sign bits of the operands is the same.
- Both operands have more than 1 sign bit.

The subtraction cannot be a signed overflow in either case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216037 91177308-0d34-0410-b5e6-96231b3b80d8

2014-08-19 23:36:30 +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] Factor out ADDS/SUBS instruction emission and add support for extensions and shift folding.

2014-08-19 22:29:55 +00:00

DebugInfo

Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594).

2014-08-19 19:44:10 +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

Revert r215415 which causse MSan to crash on a great deal of C++ code.

2014-08-13 09:19:39 +00:00

Integer

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JitListener

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Linker

Set comdats when lazily linking functions.

2014-08-15 20:17:08 +00:00

LTO

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MC

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

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

Object

llvm-objdump: don't print relocations in non-relocatable files.

2014-08-17 19:09:37 +00:00

Other

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TableGen

llvm/test/TableGen/*Foreach*.td: Remove XFAIL:vg_leak. They have not been failing since r215176.

2014-08-12 14:06:21 +00:00

tools

Make llvm-objdump handle both arm and thumb disassembly from the same Mach-O

2014-08-18 20:21:02 +00:00

Transforms

InstCombine: Annotate sub with nsw when we prove it's safe

2014-08-19 23:36:30 +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

Delete support for AuroraUX.

2014-08-14 15:15:09 +00:00

Makefile.tests

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TestRunner.sh

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