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d8835d09ec
llvm/lib
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Juergen Ributzka d8835d09ec [FastISel][AArch64] Fix an incorrect kill flag due to a bug in SelectTrunc. 
When we select a trunc instruction we don't emit any code if the type is already
i32 or smaller. This is because the instruction that uses the truncated value
will deal with it.

This behavior can incorrectly transfer a kill flag, which was meant for the
result of the truncate, onto the source register.

%2 = trunc i32 %1 to i16
... = ... %2                -> ... = ... vreg1 <kill>
... = ... %1                   ... = ... vreg1

This commit fixes this by emitting a COPY instruction, so that the result and
source register are distinct virtual registers.

This fixes rdar://problem/18178188.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216750 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-29 17:58:16 +00:00
..
Analysis Make fabs safe to speculatively execute 2014-08-29 16:01:17 +00:00
AsmParser Pass a MemoryBufferRef when we can avoid taking ownership. 2014-08-26 21:49:01 +00:00
Bitcode Fix a double free in llvm::getBitcodeTargetTriple. 2014-08-27 21:11:13 +00:00
CodeGen Use DwarfDebug::attachLowHighPC for the compilation unit DIE. 2014-08-29 09:00:26 +00:00
DebugInfo Don't own the buffer in object::Binary. 2014-08-19 18:44:46 +00:00
ExecutionEngine [MCJIT] Fix format specifiers for debug output in RuntimeDyld. 2014-08-28 04:25:17 +00:00
IR Return a std::unique_ptr when creating a new MemoryBuffer. 2014-08-27 20:03:13 +00:00
IRReader Pass a std::unique_ptr<MemoryBuffer>& to getLazyBitcodeModule. 2014-08-26 22:00:09 +00:00
LineEditor
Linker Set comdats when lazily linking functions. 2014-08-15 20:17:08 +00:00
LTO Return a std::unique_ptr when creating a new MemoryBuffer. 2014-08-27 20:03:13 +00:00
MC Silence a -Wsign-compare warning. NFC. 2014-08-28 13:23:26 +00:00
Object Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or just letting them be implicitly created. 2014-08-27 05:25:25 +00:00
Option Fix PR17239 by changing the semantics of the RemainingArgsClass Option kind 2014-08-22 19:29:17 +00:00
ProfileData llvm-cov: add code coverage tool that's based on coverage mapping format and clang's pgo. 2014-08-22 22:56:03 +00:00
Support Cleaning up static initializers in Signals.inc 2014-08-29 01:05:16 +00:00
TableGen Modernize raw_fd_ostream's constructor a bit. 2014-08-25 18:16:47 +00:00
Target [FastISel][AArch64] Fix an incorrect kill flag due to a bug in SelectTrunc. 2014-08-29 17:58:16 +00:00
Transforms Fix a typo in AddAliasScopeMetadata 2014-08-29 16:33:41 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile