Nate Begeman 5a8441ea3f Teach the legalizer how to promote SINT_TO_FP to a wider SINT_TO_FP that ... the target natively supports. This eliminates some special-case code from the x86 backend and generates better code as well. For an i8 to f64 conversion, before & after: _x87 before: subl $2, %esp movb 6(%esp), %al movsbw %al, %ax movw %ax, (%esp) filds (%esp) addl $2, %esp ret _x87 after: subl $2, %esp movsbw 6(%esp), %ax movw %ax, (%esp) filds (%esp) addl $2, %esp ret _sse before: subl $12, %esp movb 16(%esp), %al movsbl %al, %eax cvtsi2sd %eax, %xmm0 addl $12, %esp ret _sse after: subl $12, %esp movsbl 16(%esp), %eax cvtsi2sd %eax, %xmm0 addl $12, %esp ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22452 91177308-0d34-0410-b5e6-96231b3b80d8		2005-07-16 02:02:34 +00:00
..
SelectionDAG	Teach the legalizer how to promote SINT_TO_FP to a wider SINT_TO_FP that	2005-07-16 02:02:34 +00:00
AsmPrinter.cpp	aCC and STLport complained about this, because they're like that	2005-05-15 13:05:48 +00:00
BranchFolding.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
ELFWriter.cpp	Add support for 64-bit elf files	2005-07-12 06:57:52 +00:00
IntrinsicLowering.cpp	Fix lowering of ctlz, so now UnitTests/2005-05-11-Popcount-ffs-fls passes	2005-05-11 20:24:12 +00:00
LiveInterval.cpp	Print the symbolic register name in a register allocator debug dump.	2005-05-14 05:34:15 +00:00
LiveInterval.h	Print the symbolic register name in a register allocator debug dump.	2005-05-14 05:34:15 +00:00
LiveIntervalAnalysis.cpp	Print the symbolic register name in a register allocator debug dump.	2005-05-14 05:34:15 +00:00
LiveIntervalAnalysis.h
LiveVariables.cpp	allow a virtual register to be associated with live-in values.	2005-05-13 07:08:07 +00:00
MachineBasicBlock.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
MachineCodeEmitter.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
MachineFunction.cpp	print stack object alignment in -print-machineinstr dumps	2005-05-13 22:54:44 +00:00
MachineInstr.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
Makefile
Passes.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
PHIElimination.cpp	* Order #includes alphabetically	2005-05-05 23:45:17 +00:00
PhysRegTracker.h
PrologEpilogInserter.cpp	When inserting callee-save register reloads, make sure to skip over any	2005-05-15 03:09:58 +00:00
RegAllocIterativeScan.cpp
RegAllocLinearScan.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
RegAllocLocal.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
RegAllocSimple.cpp	Convert tabs to spaces	2005-04-22 04:01:18 +00:00
TwoAddressInstructionPass.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
UnreachableBlockElim.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
VirtRegMap.cpp	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
VirtRegMap.h	Remove trailing whitespace	2005-04-21 22:36:52 +00:00