Manuel Jacob 1578ec8860 Partially fix memcpy / memset / memmove lowering in SelectionDAG construction if address space != 0. ... Summary: Previously SelectionDAGBuilder asserted that the pointer operands of memcpy / memset / memmove intrinsics are in address space < 256. This assert implicitly assumed the X86 backend, where all address spaces < 256 are equivalent to address space 0 from the code generator's point of view. On some targets (R600 and NVPTX) several address spaces < 256 have a target-defined meaning, so this assert made little sense for these targets. This patch removes this wrong assertion and adds extra checks before lowering these intrinsics to library calls. If a pointer operand can't be casted to address space 0 without changing semantics, a fatal error is reported to the user. The new behavior should be valid for all targets that give address spaces != 0 a target-specified meaning (NVPTX, R600, X86). NVPTX lowers big or variable-sized memory intrinsics before SelectionDAG construction. All other memory intrinsics are inlined (the threshold is set very high for this target). R600 doesn't support memcpy / memset / memmove library calls (previously the illegal emission of a call to such library function triggered an error somewhere in the code generator). X86 now emits inline loads and stores for address spaces 256 and 257 up to the same threshold that is used for address space 0 and reports a fatal error otherwise. I call this a "partial fix" because there are still cases that can't be lowered. A fatal error is reported in these cases. Reviewers: arsenm, theraven, compnerd, hfinkel Subscribers: hfinkel, llvm-commits, alex Differential Revision: http://reviews.llvm.org/D7241 llvm-svn: 255441		2015-12-12 21:33:31 +00:00
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Analysis	Try to appease a buildbot	2015-12-12 05:53:20 +00:00
AsmParser	[IR] Reformulate LLVM's EH funclet IR	2015-12-12 05:38:55 +00:00
Bitcode	[IR] Reformulate LLVM's EH funclet IR	2015-12-12 05:38:55 +00:00
CodeGen	Partially fix memcpy / memset / memmove lowering in SelectionDAG construction if address space != 0.	2015-12-12 21:33:31 +00:00
DebugInfo	[llvm-dwp] Retrieve the DWOID from the CU for the cu_index entry	2015-12-04 17:20:04 +00:00
ExecutionEngine	[Orc] Rename IndirectStubsManagerBase to IndirectStubsManager.	2015-12-06 19:44:45 +00:00
Fuzzer	[LibFuzzer] Introducing FUZZER_FLAG_UNSIGNED and using it for seeding.	2015-12-10 20:41:53 +00:00
IR	[IR] Reformulate LLVM's EH funclet IR	2015-12-12 05:38:55 +00:00
IRReader	Return a unique_ptr from getLazyBitcodeModule and parseBitcodeFile. NFC.	2015-06-16 22:27:55 +00:00
LTO	MSVC complains about this being ambiguous.	2015-12-04 22:26:21 +00:00
LibDriver	[Option] Use an ArrayRef to store the Option Infos in OptTable. NFC	2015-10-21 16:30:42 +00:00
LineEditor	…
Linker	Fix another case where the linkage was not set.	2015-12-10 18:44:26 +00:00
MC	Replace uint16_t with the MCPhysReg typedef in many places. A lot of physical register arrays already use this typedef.	2015-12-05 07:13:35 +00:00
Object	Use make_range to reduce mentions of iterator type. NFC	2015-12-06 05:08:07 +00:00
Option	[Option] Use an ArrayRef to store the Option Infos in OptTable. NFC	2015-10-21 16:30:42 +00:00
Passes	[PM] Port StripDeadPrototypes to the new pass manager	2015-10-30 23:28:12 +00:00
ProfileData	[PGO] Stop using invalid char in instr variable names.	2015-12-12 17:28:03 +00:00
Support	Avoid buffered reads of /dev/urandom	2015-12-11 22:52:32 +00:00
TableGen	[TblGen] ArrayRefize TGParser. No functional change intended.	2015-10-24 12:46:45 +00:00
Target	[IR] Reformulate LLVM's EH funclet IR	2015-12-12 05:38:55 +00:00
Transforms	[PGO] Stop using invalid char in instr variable names.	2015-12-12 17:28:03 +00:00
CMakeLists.txt	LibDriver, llvm-lib: introduce.	2015-06-09 21:50:22 +00:00
LLVMBuild.txt	Wrap some long lines in LLVMBuild files. NFC	2015-06-12 18:44:57 +00:00
Makefile	LibDriver, llvm-lib: introduce.	2015-06-09 21:50:22 +00:00