David Majnemer 98232aa5c9 [X86] Don't transform X << 1 to X + X during type legalization ... While legalizing a 64-bit shift left by 1, the following occurs: We split the shift operand in half: a high half and a low half. We then create an ADDC with the low half and a ADDE with the high half + the carry bit from the ADDC. This is problematic if X is any_ext'd because the high half computation is now undef + undef + carry bit and there is no way to ensure that the two undef values had the same bitwise representation. This results in the lowest bit in the high half turning into garbage. Instead, do not try to turn shifts into arithmetic during type legalization. This fixes PR26350. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259065 91177308-0d34-0410-b5e6-96231b3b80d8		2016-01-28 18:20:05 +00:00
..
Analysis	[DemandedBits] Fix computation of demanded bits for ICmps	2016-01-25 14:49:36 +00:00
Assembler	Fix constant folding of constant vector GEPs with undef or null as pointer argument.	2016-01-19 16:34:31 +00:00
Bindings
Bitcode	[WinEH] Verify unwind edges against EH pad tree	2016-01-10 04:28:38 +00:00
BugPoint
CodeGen	[X86] Don't transform X << 1 to X + X during type legalization	2016-01-28 18:20:05 +00:00
DebugInfo	Followup to 258750; update more tests to use .p2align .	2016-01-26 00:35:07 +00:00
Examples
ExecutionEngine	[RuntimeDyld][AArch64] Add support for the MachO ARM64_RELOC_SUBTRACTOR reloc.	2016-01-21 21:59:50 +00:00
Feature	MachineScheduler: Honor optnone functions in the pre-ra scheduler.	2016-01-20 22:38:25 +00:00
FileCheck
Instrumentation	[sanitizer] [msan] Fix origin store of array types	2016-01-11 19:55:27 +00:00
Integer
JitListener	Fix several accidental DOS line endings in source files	2016-01-03 17:22:03 +00:00
LibDriver
Linker	[ThinLTO] Find all needed metadata when linking metadata as postpass	2016-01-25 22:04:56 +00:00
LTO	[LTO] Restore original linkage of externals prior to splitting	2016-01-18 23:24:54 +00:00
MC	AMDGPU: waitcnt operand fixes	2016-01-28 17:13:44 +00:00
Object	Fix identify_magic() to check that a file that starts with MH_MAGIC is	2016-01-26 23:43:37 +00:00
Other	Recommit r256952 "Filtering IR printing for print-after-all/print-before-all"	2016-01-06 22:55:03 +00:00
SymbolRewriter
TableGen	[llvm-tblgen] Stop emitting the intrinsic name matching code	2016-01-26 23:01:21 +00:00
tools	[llvm-nm] Remove redundant check for file validity.	2016-01-27 20:27:44 +00:00
Transforms	[PlaceSafepoints] Clean up tests; NFC	2016-01-28 18:01:03 +00:00
Unit
Verifier	Add a "gc-transition" operand bundle	2016-01-20 19:50:25 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.cfg	Introduce sanstats tool and llvm::CreateSanitizerStatReport function.	2016-01-16 00:31:11 +00:00
lit.site.cfg.in	Make WinCOFFObjectWriter.cpp's timestamp writing not use ENABLE_TIMESTAMPS	2016-01-06 19:05:19 +00:00
TestRunner.sh