Chris Lattner 2392ae7d73 Implement rdar://7860110 (also in target/readme.txt) narrowing ... a load/or/and/store sequence into a narrower store when it is safe. Daniel tells me that clang will start producing this sort of thing with bitfields, and this does trigger a few dozen times on 176.gcc produced by llvm-gcc even now. This compiles code like CodeGen/X86/2009-05-28-DAGCombineCrash.ll into: movl %eax, 36(%rdi) instead of: movl $4294967295, %eax ## imm = 0xFFFFFFFF andq 32(%rdi), %rax shlq $32, %rcx addq %rax, %rcx movq %rcx, 32(%rdi) and each of the testcases into a single store. Each of them used to compile into craziness like this: _test4: movl $65535, %eax ## imm = 0xFFFF andl (%rdi), %eax shll $16, %esi addl %eax, %esi movl %esi, (%rdi) ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101343 91177308-0d34-0410-b5e6-96231b3b80d8		2010-04-15 04:48:01 +00:00
..
CallingConvLower.cpp	Change errs() to dbgs().	2010-01-05 01:24:50 +00:00
CMakeLists.txt	Rename SelectionDAGLowering to SelectionDAGBuilder, and rename	2009-11-23 18:04:58 +00:00
DAGCombiner.cpp	Implement rdar://7860110 (also in target/readme.txt) narrowing	2010-04-15 04:48:01 +00:00
FastISel.cpp	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
FunctionLoweringInfo.cpp	Add more const qualifiers for LLVM IR pointers in CodeGen.	2010-04-15 04:33:49 +00:00
FunctionLoweringInfo.h	Add more const qualifiers for LLVM IR pointers in CodeGen.	2010-04-15 04:33:49 +00:00
InstrEmitter.cpp	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
InstrEmitter.h	reapply 99444/99445, which I speculatively reverted in	2010-03-25 04:41:16 +00:00
LegalizeDAG.cpp	More 80 violations.	2010-04-15 01:25:27 +00:00
LegalizeFloatTypes.cpp	More 80 violations.	2010-04-15 01:25:27 +00:00
LegalizeIntegerTypes.cpp	More 80 violations.	2010-04-15 01:25:27 +00:00
LegalizeTypes.cpp	80 col violations.	2010-04-15 01:01:55 +00:00
LegalizeTypes.h	Turn calls to copysignl into an FCOPYSIGN node. Handle FCOPYSIGN nodes	2010-03-14 21:08:40 +00:00
LegalizeTypesGeneric.cpp	More 80 violations.	2010-04-15 01:25:27 +00:00
LegalizeVectorOps.cpp	Revert an earlier change to SIGN_EXTEND_INREG for vectors. The VTSDNode	2010-01-09 02:13:55 +00:00
LegalizeVectorTypes.cpp	More 80 violations.	2010-04-15 01:25:27 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00
ScheduleDAGFast.cpp	Trim unneeded includes.	2010-01-21 21:44:43 +00:00
ScheduleDAGList.cpp	Change errs() to dbgs().	2010-01-05 01:24:43 +00:00
ScheduleDAGRRList.cpp	Three changes:	2010-04-07 05:20:54 +00:00
ScheduleDAGSDNodes.cpp	Scheduler assumes SDDbgValue nodes are in source order. That's true currently. But add an assertion to verify it.	2010-03-25 07:16:57 +00:00
ScheduleDAGSDNodes.h	Three changes:	2010-04-07 05:20:54 +00:00
SDNodeDbgValue.h	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
SDNodeOrdering.h	Allow 0 as an order number. Don't assign an order to formal arguments.	2009-12-22 21:35:02 +00:00
SelectionDAG.cpp	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
SelectionDAGBuilder.cpp	Add more const qualifiers for LLVM IR pointers in CodeGen.	2010-04-15 04:33:49 +00:00
SelectionDAGBuilder.h	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
SelectionDAGISel.cpp	Add more const qualifiers for LLVM IR pointers in CodeGen.	2010-04-15 04:33:49 +00:00
SelectionDAGPrinter.cpp	Change errs() to dbgs().	2010-01-05 01:24:45 +00:00
TargetLowering.cpp	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00