llvm-6502/lib/Target/Hexagon
Ahmed Bougacha 7fac1d945f [SelectionDAG] Allow targets to specify legality of extloads' result
type (in addition to the memory type).

The *LoadExt* legalization handling used to only have one type, the
memory type.  This forced users to assume that as long as the extload
for the memory type was declared legal, and the result type was legal,
the whole extload was legal.

However, this isn't always the case.  For instance, on X86, with AVX,
this is legal:
    v4i32 load, zext from v4i8
but this isn't:
    v4i64 load, zext from v4i8
Whereas v4i64 is (arguably) legal, even without AVX2.

Note that the same thing was done a while ago for truncstores (r46140),
but I assume no one needed it yet for extloads, so here we go.

Calls to getLoadExtAction were changed to add the value type, found
manually in the surrounding code.

Calls to setLoadExtAction were mechanically changed, by wrapping the
call in a loop, to match previous behavior.  The loop iterates over
the MVT subrange corresponding to the memory type (FP vectors, etc...).
I also pulled neighboring setTruncStoreActions into some of the loops;
those shouldn't make a difference, as the additional types are illegal.
(e.g., i128->i1 truncstores on PPC.)

No functional change intended.

Differential Revision: http://reviews.llvm.org/D6532


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225421 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-08 00:51:32 +00:00
..
Disassembler [Hexagon] Adding deallocframe and circular addressing loads. 2014-12-26 20:30:58 +00:00
MCTargetDesc Reverting 225045 and 225043 and XFAIL multiline.ll on hexagon 2014-12-31 17:14:35 +00:00
TargetInfo
CMakeLists.txt
Hexagon.h
Hexagon.td [Hexagon] Adding dealloc_return encoding and absolute address stores. 2015-01-06 16:15:15 +00:00
HexagonAsmPrinter.cpp
HexagonAsmPrinter.h
HexagonCallingConv.td
HexagonCallingConvLower.cpp
HexagonCallingConvLower.h
HexagonCFGOptimizer.cpp [Hexagon] Adding encodings for JR class instructions. Updating complier usages. 2014-12-10 21:24:10 +00:00
HexagonCopyToCombine.cpp [Hexagon] Dropping old combine instructions without encodings. 2014-12-30 17:53:54 +00:00
HexagonExpandPredSpillCode.cpp [Hexagon] Adding post-increment register form stores and register-immediate form stores with tests. 2014-12-29 20:44:51 +00:00
HexagonFixupHwLoops.cpp [Hexagon] Removing old variants of instructions and updating references. 2014-12-19 20:29:29 +00:00
HexagonFrameLowering.cpp [Hexagon] Adding dealloc_return encoding and absolute address stores. 2015-01-06 16:15:15 +00:00
HexagonFrameLowering.h
HexagonHardwareLoops.cpp [Hexagon] Removing old variants of instructions and updating references. 2014-12-19 20:29:29 +00:00
HexagonInstrFormats.td [Hexagon] Reapplying 224775 load words. 2014-12-23 20:02:16 +00:00
HexagonInstrFormatsV4.td [Hexagon] Adding compound jump encodings. 2015-01-06 20:03:31 +00:00
HexagonInstrInfo.cpp [Hexagon] Adding dealloc_return encoding and absolute address stores. 2015-01-06 16:15:15 +00:00
HexagonInstrInfo.h
HexagonInstrInfo.td [Hexagon] Adding round reg/imm and bitsplit instructions. 2015-01-05 18:08:21 +00:00
HexagonInstrInfoV3.td [Hexagon] Adding double word add/min/minu/max/maxu instructions and tests. 2014-12-12 21:29:25 +00:00
HexagonInstrInfoV4.td [Hexagon] Adding compound jump encodings. 2015-01-06 20:03:31 +00:00
HexagonInstrInfoV5.td [Hexagon] Fix 225372 USR register is not fully complete. Removing Uses = [USR] maintains existing functionality to old instructions without encodings. 2015-01-07 20:43:38 +00:00
HexagonIntrinsics.td [Hexagon] Adding doubleregs for control registers. Renaming control register class. 2014-12-19 18:56:10 +00:00
HexagonIntrinsicsDerived.td [Hexagon] Removing old multiply defs and updating references to new versions. 2014-12-16 16:10:01 +00:00
HexagonIntrinsicsV3.td
HexagonIntrinsicsV4.td
HexagonIntrinsicsV5.td
HexagonISelDAGToDAG.cpp [Hexagon] Adding post-increment register form stores and register-immediate form stores with tests. 2014-12-29 20:44:51 +00:00
HexagonISelLowering.cpp [SelectionDAG] Allow targets to specify legality of extloads' result 2015-01-08 00:51:32 +00:00
HexagonISelLowering.h [Hexagon] Adding encoding for popcount, fastcorner, dword asr with rounding. 2015-01-07 20:07:28 +00:00
HexagonMachineFunctionInfo.cpp
HexagonMachineFunctionInfo.h
HexagonMachineScheduler.cpp
HexagonMachineScheduler.h
HexagonMCInstLower.cpp
HexagonNewValueJump.cpp [Hexagon] Adding J class call instructions. 2014-12-12 21:12:27 +00:00
HexagonOperands.td [Hexagon] Adding encoding for misc v4 instructions: boundscheck, tlbmatch, dcfetch. 2015-01-06 19:03:20 +00:00
HexagonPeephole.cpp [Hexagon] Dropping old combine instructions without encodings. 2014-12-30 17:53:54 +00:00
HexagonRegisterInfo.cpp [Hexagon] Adding post-increment register form stores and register-immediate form stores with tests. 2014-12-29 20:44:51 +00:00
HexagonRegisterInfo.h
HexagonRegisterInfo.td [Hexagon] Adding deallocframe and circular addressing loads. 2014-12-26 20:30:58 +00:00
HexagonRemoveSZExtArgs.cpp
HexagonSchedule.td
HexagonScheduleV4.td
HexagonSelectCCInfo.td
HexagonSelectionDAGInfo.cpp
HexagonSelectionDAGInfo.h
HexagonSplitConst32AndConst64.cpp
HexagonSplitTFRCondSets.cpp [Hexagon] Updating rr/ri 32/64 transfer encodings and adding tests. 2014-12-09 20:23:30 +00:00
HexagonSubtarget.cpp
HexagonSubtarget.h
HexagonTargetMachine.cpp [CodeGen] Add print and verify pass after each MachineFunctionPass by default 2014-12-11 21:26:47 +00:00
HexagonTargetMachine.h
HexagonTargetObjectFile.cpp
HexagonTargetObjectFile.h
HexagonVarargsCallingConvention.h
HexagonVLIWPacketizer.cpp [Hexagon] Updating constant extender def, adding alu-not instructions, compare to general register, and inverted compares. 2014-12-30 15:44:17 +00:00
LLVMBuild.txt
Makefile