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Mirror of https://github.com/RPCS3/llvm-mirror
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2fddd75212
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Andrea Di Biagio 2fddd75212 Fix for PR23103. Correctly propagate the 'IsUndef' flag to the register operands of a commuted instruction. 
Revision 220239 exposed a latent bug in method
'TargetInstrInfo::commuteInstruction'. When commuting the operands of a machine
instruction, method 'commuteInstruction' didn't correctly propagate the
'IsUndef' flag to the register operands of the new (commuted) instruction.

Before this patch, the following instruction:
  %vreg4<def> = VADDSDrr  %vreg14, %vreg5<undef>; FR64:%vreg4,%vreg14,%vreg5

was wrongly converted by method 'commuteInstruction' into:
  %vreg4<def> = VADDSDrr  %vreg5, %vreg14<undef>; FR64:%vreg4,%vreg5,%vreg14

The correct instruction should have been:
  %vreg4<def> = VADDSDrr  %vreg5<undef>, %vreg14; FR64:%vreg4,%vreg5,%vreg14

This patch fixes the problem in method 'TargetInstrInfo::commuteInstruction'.
When swapping the operands of a machine instruction, we now make sure that
'IsUndef' flags are correctly set.
Added test case 'pr23103.ll'.

Differential Revision: http://reviews.llvm.org/D9406

llvm-svn: 236258
2015-04-30 21:03:29 +00:00
autoconf Clean up docs references to './configure' in preparation for deprecating in-source builds 2015-04-29 20:06:41 +00:00
bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
cmake Allow building the gold plugin even if the gold binary is not found. 2015-04-27 21:08:47 +00:00
docs Add a note about permitting default member initializers 2015-04-30 18:17:12 +00:00
examples IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
include Exhaustively test all triples in TripleTest. 2015-04-30 20:08:44 +00:00
lib Fix for PR23103. Correctly propagate the 'IsUndef' flag to the register operands of a commuted instruction. 2015-04-30 21:03:29 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
test Fix for PR23103. Correctly propagate the 'IsUndef' flag to the register operands of a commuted instruction. 2015-04-30 21:03:29 +00:00
tools For llvm-objdump, with the -archive-headers and -macho options, use the -non-verbose 2015-04-30 20:30:42 +00:00
unittests Exhaustively test all triples in TripleTest. 2015-04-30 20:08:44 +00:00
utils [NFC] Updating FileCheck to reduce the std::vector interface used via cl::list. 2015-04-29 21:45:24 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore Ignore compile_commands.json only at the root of the tree. 2015-03-26 18:55:42 +00:00
CMakeLists.txt [CMake] Updates to llvm-shlib to support overriding exports list and added an option to export all symbols. 2015-04-13 21:29:46 +00:00
CODE_OWNERS.TXT Add myself as the Constant Folder owner. 2015-04-20 23:19:10 +00:00
configure Clean up docs references to './configure' in preparation for deprecating in-source builds 2015-04-29 20:06:41 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Try to unbreak Clang build to export LLVM_ABI_BREAKING_CHECKS, fixup for r233310. 2015-04-01 11:46:15 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +00:00
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.