David Majnemer aa3c1f7077 [InstCombine] Don't miscompile select to poison ...

If we have (select a, b, c), it is sometimes valid to simplify this to a
single select operand.  However, doing so is only valid if the
computation doesn't inject poison into the computation.

It might be helpful to consider the following example:
  (select (icmp ne %i, INT_MAX), (add nsw %i, 1), INT_MIN)

The select is equivalent to (add %i, 1) but not (add nsw %i, 1).

Self hosting on x86_64 revealed that this occurs very, very rarely so
bailing out is hopefully pretty reasonable.

llvm-svn: 239215

2015-06-06 02:30:43 +00:00

..

Analysis

[DependenceAnalysis] Extend unifySubscriptType for handling coupled subscript groups.

2015-05-29 16:58:08 +00:00

Assembler

Make the test introduced in r239015 more targeted.

2015-06-04 07:21:42 +00:00

Bindings

IR: Give 'DI' prefix to debug info metadata

2015-04-29 16:38:44 +00:00

Bitcode

[BitcodeReader] Diagnose type mismatches with aliases

2015-06-03 01:30:13 +00:00

BugPoint

IR: Give 'DI' prefix to debug info metadata

2015-04-29 16:38:44 +00:00

CodeGen

Revert r238473, "Thumb2: Modify codegen for memcpy intrinsic to prefer LDM/STM."

2015-06-05 18:01:28 +00:00

DebugInfo

Revert "[Object, ELF] Fix segmentation fault in ELFFile::getSectionName()."

2015-06-04 23:58:31 +00:00

ExecutionEngine

Re-commit r238838, r238844 with fix for host/target endian mismatch and windows buildbot.

2015-06-03 10:27:28 +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

…

Instrumentation

[ASan] New approach to dynamic allocas unpoisoning. Patch by Max Ostapenko!

2015-05-28 07:51:49 +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

IR: Give 'DI' prefix to debug info metadata

2015-04-29 16:38:44 +00:00

Linker

Changed renaming of local symbols by inserting a dot vefore the numeric suffix.

2015-05-12 16:47:30 +00:00

LTO

Revert changes to LTO test case since llvm-lto can't handle textual IR inputs

2015-04-24 18:13:27 +00:00

MC

Handle 16 bit PC relative relocations.

2015-06-06 02:29:56 +00:00

Object

[Object, MachO] Don't crash on incomplete MachO segment load commands.

2015-06-04 22:26:44 +00:00

Other

Let llc and opt override "-target-cpu" and "-target-features" via command line

2015-05-06 23:54:14 +00:00

SymbolRewriter

…

TableGen

Use std::bitset for SubtargetFeatures.

2015-05-26 10:47:10 +00:00

tools

[dsymutil] Fix misspelled CHECK line.

2015-06-05 23:46:18 +00:00

Transforms

[InstCombine] Don't miscompile select to poison

2015-06-06 02:30:43 +00:00

Unit

…

Verifier

[Verifier] Assert gc_relocate always return a pointer type

2015-05-18 19:50:14 +00:00

YAMLParser

YAML: Implement block scalar parsing.

2015-05-13 23:10:51 +00:00

.clang-format

…

CMakeLists.txt

Remove duplicate cmake target I added in r236792.

2015-05-08 16:59:53 +00:00

lit.cfg

Add yaml-bench to the list of tools make check needs to run

2015-05-07 22:53:11 +00:00

lit.site.cfg.in

…

Makefile

…

Makefile.tests

…

TestRunner.sh

…