Benjamin Kramer 9c64030445 Emit a more efficient magic number multiplication for exact sdivs. ... We have to do this in DAGBuilder instead of DAGCombiner, because the exact bit is lost after building. struct foo { char x[24]; }; long bar(struct foo *a, struct foo *b) { return a-b; } is now compiled into movl 4(%esp), %eax subl 8(%esp), %eax sarl $3, %eax imull $-1431655765, %eax, %eax instead of movl 4(%esp), %eax subl 8(%esp), %eax movl $715827883, %ecx imull %ecx movl %edx, %eax shrl $31, %eax sarl $2, %edx addl %eax, %edx movl %edx, %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134695 91177308-0d34-0410-b5e6-96231b3b80d8		2011-07-08 10:31:30 +00:00
..
Mangler.h
Target.td	Eliminate asm parser's dependency on TargetMachine:	2011-07-08 01:53:10 +00:00
TargetAsmBackend.h
TargetAsmInfo.h	Move a function out-of-line.	2011-07-07 21:05:13 +00:00
TargetAsmLexer.h
TargetAsmParser.h
TargetCallingConv.h
TargetCallingConv.td
TargetData.h
TargetELFWriterInfo.h
TargetFrameLowering.h	Use ArrayRef instead of a std::vector&.	2011-07-07 04:42:01 +00:00
TargetInstrInfo.h	Hide the call to InitMCInstrInfo into tblgen generated ctor.	2011-07-01 17:57:27 +00:00
TargetIntrinsicInfo.h
TargetJITInfo.h
TargetLibraryInfo.h
TargetLowering.h	Emit a more efficient magic number multiplication for exact sdivs.	2011-07-08 10:31:30 +00:00
TargetLoweringObjectFile.h	Use the presence of the __compact_unwind section to indicate that a target	2011-06-23 05:13:28 +00:00
TargetMachine.h	Eliminate asm parser's dependency on TargetMachine:	2011-07-08 01:53:10 +00:00
TargetOpcodes.h	Change the REG_SEQUENCE SDNode to take an explict register class ID as its first operand. This operand is lowered away by the time we reach MachineInstrs, so the actual register-allocation handling of them doesn't need to change.	2011-06-16 18:17:13 +00:00
TargetOptions.h	Rename TargetOptions::StackAlignment to StackAlignmentOverride.	2011-06-23 18:15:47 +00:00
TargetRegisterInfo.h	Constify getCompactUnwindRegNum.	2011-07-06 20:33:48 +00:00
TargetRegistry.h	Eliminate asm parser's dependency on TargetMachine:	2011-07-08 01:53:10 +00:00
TargetSchedule.td
TargetSelect.h
TargetSelectionDAG.td	Add one more argument to the prefetch intrinsic to indicate whether it's a data	2011-06-14 04:58:37 +00:00
TargetSelectionDAGInfo.h
TargetSubtargetInfo.h	Rename TargetSubtarget to TargetSubtargetInfo for consistency.	2011-07-01 21:01:15 +00:00