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Duncan P. N. Exon Smith dfd04582ae IR: Reduce RAUW traffic in ConstantExpr 
Avoid RAUW-ing `ConstantExpr` when an operand changes unless the new
`ConstantExpr` already has users.  This prevents the RAUW from rippling
up the expression tree unnecessarily.

This commit indirectly adds test coverage for r215953 (this is how I
came across the bug).

This is part of PR20515.

llvm-svn: 215960
 		2014-08-19 01:12:53 +00:00
..
Analysis Answer to Philip Reames comments 2014-08-18 22:18:14 +00:00
AsmParser LLParser: Handle BlockAddresses on-the-fly 2014-08-19 00:13:19 +00:00
Bitcode BitcodeReader: Only create one basic block for each blockaddress 2014-08-16 01:54:37 +00:00
CodeGen Teach the AArch64 backend to handle f16 2014-08-18 14:22:39 +00:00
DebugInfo Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
ExecutionEngine Use a range loop. NFC. 2014-08-18 23:15:59 +00:00
IR IR: Reduce RAUW traffic in ConstantExpr 2014-08-19 01:12:53 +00:00
IRReader Pass a std::uinque_ptr to ParseAssembly to make the ownership explicit. NFC. 2014-08-17 21:36:47 +00:00
LTO Revert "Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size." 2014-08-18 00:24:38 +00:00
LineEditor [CMake] Use LINK_LIBS instead of target_link_libraries(). 2014-02-26 06:41:29 +00:00
Linker Set comdats when lazily linking functions. 2014-08-15 20:17:08 +00:00
MC TableGen: allow use of uint64_t for available features mask. 2014-08-18 11:49:42 +00:00
Object Make llvm-objdump handle both arm and thumb disassembly from the same Mach-O 2014-08-18 20:21:02 +00:00
Option [Option] Support MultiArg in --help 2014-08-15 21:35:07 +00:00
ProfileData Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Support Convert an ownership comment with std::uinque_ptr. 2014-08-17 22:20:33 +00:00
TableGen Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Target NVPTX: Use RAUW instead of reinventing the wheel 2014-08-19 00:20:02 +00:00
Transforms Revert "Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size." 2014-08-18 00:24:38 +00:00
CMakeLists.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
LLVMBuild.txt ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00
Makefile ProfileData: Introduce the InstrProfReader interface and a text reader 2014-03-21 17:24:48 +00:00