Richard Sandiford 23c9710636 [SystemZ] Optimize comparisons with truncated extended loads ...

If the extension of a loaded value is compared against zero and used in
other arithmetic, InstCombine will change the comparison to use the
unextended load.  It's also possible that the comparison could be against
the unextended load from the outset.

In DAG form this becomes a truncation of an extending load.  We want to
strip the truncation if possible so that we can use load-and-test instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197804 91177308-0d34-0410-b5e6-96231b3b80d8

2013-12-20 11:56:02 +00:00

..

Analysis

[block-freq] Teach branch probability how to return the edge weight in between a BasicBlock and one of its successors.

2013-12-14 02:24:25 +00:00

AsmParser

Begin adding docs and IR-level support for the inalloca attribute

2013-12-19 02:14:12 +00:00

Bitcode

Begin adding docs and IR-level support for the inalloca attribute

2013-12-19 02:14:12 +00:00

CodeGen

Ranges in the .debug_range section need to have begin and end labels,

2013-12-20 04:34:22 +00:00

DebugInfo

DebugInfo: Move type units into the debug_types section with appropriate comdat grouping and type unit headers

2013-12-13 21:33:40 +00:00

ExecutionEngine

There are no __register_frame and __deregister_frame functions

2013-12-17 08:40:11 +00:00

IR

When parsing data layout string looking for endianness, use the correct default

2013-12-20 02:54:35 +00:00

IRReader

[llvm-c] Expose IRReader interface

2013-11-06 09:21:15 +00:00

Linker

Revert "Move copying of global initializers below the cloning of functions."

2013-11-09 00:43:18 +00:00

LTO

Add TargetLibraryInfo in LTO passes builder

2013-12-12 01:37:39 +00:00

MC

Add a finishParse() callback to the targer asm parser

2013-12-19 18:08:08 +00:00

Object

Support for microMIPS TLS relocations.

2013-12-19 16:02:32 +00:00

Option

Avoid buffer copies when a Twine already is a StringRef.

2013-12-03 18:18:28 +00:00

Support

Add support for krait cpu in llvm::sys::getHostCPUName()

2013-12-20 09:24:13 +00:00

TableGen

Fix most memory leaks in tablegen.

2013-10-31 04:07:41 +00:00

Target

[SystemZ] Optimize comparisons with truncated extended loads

2013-12-20 11:56:02 +00:00

Transforms

Transforms: Don't create bad weights when eliminating dead cases

2013-12-20 08:21:30 +00:00

CMakeLists.txt

…

LLVMBuild.txt

…

Makefile

Reformat Makefile. No other changes.

2013-10-30 04:03:03 +00:00