Sanjay Patel a3209ae52e [DAGCombiner] fold assertzexts separated by trunc ...

If we have an AssertZext of a truncated value that has already been AssertZext'ed, 
we can assert on the wider source op to improve the zext-y knowledge:
 assert (trunc (assert X, i8) to iN), i1 --> trunc (assert X, i1) to iN

This moves a fold from being Mips-specific to general combining, and x86 shows
improvements.

Differential Revision: https://reviews.llvm.org/D37017



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313577 91177308-0d34-0410-b5e6-96231b3b80d8

2017-09-18 22:05:35 +00:00

..

Analysis

[TargetTransformInfo] Static alloca has 0 cost

2017-09-15 22:28:12 +00:00

Assembler

Parse and print DIExpressions inline to ease IR and MIR testing

2017-08-23 20:31:27 +00:00

Bindings

[llvm] Get rid of "%T" expansions

2017-08-15 20:29:24 +00:00

Bitcode

[AutoUpgrade] Fix a compatibility issue with module flag

2017-09-15 21:12:14 +00:00

BugPoint

…

CodeGen

[DAGCombiner] fold assertzexts separated by trunc

2017-09-18 22:05:35 +00:00

DebugInfo

[dwarfdump] Make .eh_frame an alias for .debug_frame

2017-09-18 14:15:57 +00:00

DllTool

[llvm-dlltool] Fix creating stdcall/fastcall import libraries for i386

2017-08-16 05:18:36 +00:00

Examples

…

ExecutionEngine

[AsmParser] Recommit: Hash is not a comment on some targets

2017-08-21 09:58:37 +00:00

Feature

Add ‘llvm.experimental.constrained.fma‘ Intrinsic.

2017-08-24 04:18:24 +00:00

FileCheck

…

Instrumentation

[SanitizeCoverage] Enable stack-depth coverage for -fsanitize=fuzzer

2017-08-30 22:49:31 +00:00

Integer

…

JitListener

…

LibDriver

[llvm] Get rid of "%T" expansions

2017-08-15 20:29:24 +00:00

Linker

llvm-dwarfdump: Make -brief the default and add a -verbose option instead.

2017-09-11 23:05:20 +00:00

LTO

Reland r313157, "ThinLTO: Correctly follow aliasee references when dead stripping." which was reverted in r313222.

2017-09-14 05:02:59 +00:00

MC

[AArch64] Add V8_2aOps feature to Cortex-A55 and 75

2017-09-18 14:46:14 +00:00

Object

[MachO] Prevent heap overflow when load command extends past EOF

2017-09-13 13:43:01 +00:00

ObjectYAML

[WebAssembly] Update relocation names to match spec

2017-09-01 17:32:01 +00:00

Other

[PM/CGSCC] Teach the CGSCC pass manager components to gracefully handle

2017-09-14 08:33:57 +00:00

SafepointIRVerifier

…

SymbolRewriter

…

TableGen

TableGen support for parameterized register class information

2017-09-14 16:56:21 +00:00

ThinLTO/X86

ModuleSummaryAnalysis: Correctly handle all function operand references.

2017-09-07 05:35:35 +00:00

tools

llvm-dwarfdump: add a --show-parents options when selectively dumping DIEs.

2017-09-18 21:27:44 +00:00

Transforms

[InstCombine] auto-generate complete checks; NFC

2017-09-18 21:57:56 +00:00

Unit

Resubmit "[lit] Force site configs to run before source-tree configs"

2017-09-15 22:10:46 +00:00

Verifier

Revert "Revert r312139 "Verifier: Verify the correctness of fragment expressions attached to globals.""

2017-08-31 00:07:33 +00:00

YAMLParser

…

.clang-format

…

CMakeLists.txt

Add llvm-isel-fuzzer to test/CMakeLists.txt

2017-09-03 03:00:27 +00:00

lit.cfg

Resubmit "Add a shared llvm.lit module that all test suites can use."

2017-09-16 18:46:21 +00:00

lit.site.cfg.in

Resubmit "Add a shared llvm.lit module that all test suites can use."

2017-09-16 18:46:21 +00:00

TestRunner.sh

…