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llvm-mirror/lib/Transforms
Hal Finkel c078e835f2 [BDCE] Don't forget uses of root instructions seen before the instruction itself
When visiting the initial list of "root" instructions (those which must always
be alive), for those that are integer-valued (such as invokes returning an
integer), we mark their bits as (initially) all dead (we might, obviously, find
uses of those bits later, but all bits are assumed dead until proven
otherwise). Don't do so, however, if we're already seen a use of those bits by
another root instruction (such as a store).

Fixes a miscompile of the sanitizer unit tests on x86_64.

Also, add a debug line for visiting the root instructions, and remove a debug
line which tried to print instructions being removed (printing dead
instructions is dangerous, and can sometimes crash).

llvm-svn: 229618
2015-02-18 03:12:28 +00:00
..
Hello [CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32. 2014-07-13 13:36:48 +00:00
InstCombine InstCombine: fold more cases of (fp_to_u/sint (u/sint_to_fp val)) 2015-02-16 21:47:54 +00:00
Instrumentation Prefer SmallVector::append/insert over push_back loops. 2015-02-17 15:29:18 +00:00
IPO [BDCE] Add a bit-tracking DCE pass 2015-02-17 01:36:59 +00:00
ObjCARC Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition. 2015-02-15 22:54:22 +00:00
Scalar [BDCE] Don't forget uses of root instructions seen before the instruction itself 2015-02-18 03:12:28 +00:00
Utils Prefer SmallVector::append/insert over push_back loops. 2015-02-17 15:29:18 +00:00
Vectorize Enabled cost calculation for masked memory operations. 2015-02-15 08:08:48 +00:00
CMakeLists.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
LLVMBuild.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
Makefile Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00