David Majnemer 2af441e26e InstCombine: mul to shl shouldn't preserve nsw ...

consider:
mul i32 nsw %x, -2147483648

this instruction will not result in poison if %x is 1

however, if we transform this into:
shl i32 nsw %x, 31

then we will be generating poison because we just shifted into the sign
bit.

This fixes PR21242.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219566 91177308-0d34-0410-b5e6-96231b3b80d8

2014-10-11 10:19:52 +00:00

..

Analysis

This patch teaches ScalarEvolution to pick and use !range metadata.

2014-10-10 21:22:34 +00:00

Assembler

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

Bindings

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

Bitcode

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

BugPoint

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

CodeGen

Add basic conditional branches in mips fast-isel

2014-10-11 00:55:18 +00:00

DebugInfo

[dwarfdump] Prettyprint DW_AT_APPLE_property_attribute bitfield values.

2014-10-10 15:51:10 +00:00

ExecutionEngine

[mips] Remove XFAIL from two XPASS'ing tests on the llvm-mips-linux builder

2014-10-03 08:49:44 +00:00

Feature

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

FileCheck

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Instrumentation

DebugInfo+DFSan: Ensure that debug info references to llvm::Functions remain pointing to the underlying function when wrappers are created

2014-10-07 22:59:46 +00:00

Integer

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JitListener

Revert "Revert "DI: Fold constant arguments into a single MDString""

2014-10-03 20:01:09 +00:00

Linker

[dwarfdump] Print the name for referenced specification of abstract_origin DIEs.

2014-10-06 03:36:31 +00:00

LTO

LTO: Add missing target triple from r218784

2014-10-01 18:49:58 +00:00

MC

[mips][microMIPS] Implement ADDIUSP instruction

2014-10-10 14:37:30 +00:00

Object

llvm-ar: Start adding support for mri scripts.

2014-10-10 18:33:51 +00:00

Other

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TableGen

[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.

2014-09-30 11:32:22 +00:00

tools

llvm-readobj: add test for r219228

2014-10-08 02:06:11 +00:00

Transforms

InstCombine: mul to shl shouldn't preserve nsw

2014-10-11 10:19:52 +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

llvm/test/lit.cfg: Suppress dwarf stuff for targeting x86_64-mingw32 while investigating since r219108.

2014-10-06 23:29:06 +00:00

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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