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d25126faae
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Andrea Di Biagio d25126faae [InstCombine] Fix regression introduced at r227197. 
This patch fixes a problem I accidentally introduced in an instruction combine
on select instructions added at r227197. That revision taught the instruction
combiner how to fold a cttz/ctlz followed by a icmp plus select into a single
cttz/ctlz with flag 'is_zero_undef' cleared.

However, the new rule added at r227197 would have produced wrong results in the
case where a cttz/ctlz with flag 'is_zero_undef' cleared was follwed by a
zero-extend or truncate. In that case, the folded instruction would have
been inserted in a wrong location thus leaving the CFG in an inconsistent
state.

This patch fixes the problem and add two reproducible test cases to
existing test 'InstCombine/select-cmp-cttz-ctlz.ll'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229124 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-13 16:33:34 +00:00
autoconf Fix some bashims. More information on https://wiki.ubuntu.com/DashAsBinSh. Reported initially on https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772302 & https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772301 2015-02-01 14:55:43 +00:00
bindings [PM] Remove the old 'PassManager.h' header file at the top level of 2015-02-13 10:01:29 +00:00
cmake Teach llvm_add_library() to find include dirs. 2015-02-10 05:04:37 +00:00
docs Help: Document how to build and install with CMake. 2015-02-13 16:15:32 +00:00
examples [PM] Update the examples to reflect the removal of the 2015-02-13 10:21:05 +00:00
include [PBQP] Conservativelly allocatable nodes can be spilled and give a better solution 2015-02-13 12:04:42 +00:00
lib [InstCombine] Fix regression introduced at r227197. 2015-02-13 16:33:34 +00:00
projects
test [InstCombine] Fix regression introduced at r227197. 2015-02-13 16:33:34 +00:00
tools [PM] Remove the old 'PassManager.h' header file at the top level of 2015-02-13 10:01:29 +00:00
unittests [PM] Remove the old 'PassManager.h' header file at the top level of 2015-02-13 10:01:29 +00:00
utils [X86] Add support for parsing and printing the mnemonic aliases for the XOP VPCOM instructions. 2015-02-13 07:42:25 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Add one more vim swap file pattern 2015-01-30 21:59:28 +00:00
CMakeLists.txt Revert "Raising minimum required CMake version to 2.8.12.2." 2015-02-09 22:07:49 +00:00
CODE_OWNERS.TXT Assume code ownership for the PS4 to ensure patches get reviewed, per the Developer Policy. 2015-01-28 18:33:39 +00:00
configure Fix some bashims. More information on https://wiki.ubuntu.com/DashAsBinSh. Reported initially on https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772302 & https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772301 2015-02-01 14:55:43 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Revert test commit 2015-02-04 18:46:00 +00:00

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