Chris Lattner 2bb6f41282 Don't bother sign/zext_inreg'ing the result of an and operation if we know ...

the result does change as a result of the extend.

This improves codegen for Alpha on this testcase:

int %a(ushort* %i) {
        %tmp.1 = load ushort* %i
        %tmp.2 = cast ushort %tmp.1 to int
        %tmp.4 = and int %tmp.2, 1
        ret int %tmp.4
}

Generating:

a:
        ldgp $29, 0($27)
        ldwu $0,0($16)
        and $0,1,$0
        ret $31,($26),1

instead of:

a:
        ldgp $29, 0($27)
        ldwu $0,0($16)
        and $0,1,$0
        addl $0,0,$0
        ret $31,($26),1

btw, alpha really should switch to livein/outs for args :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21213 91177308-0d34-0410-b5e6-96231b3b80d8

2005-04-10 23:37:16 +00:00

..

SelectionDAG

Don't bother sign/zext_inreg'ing the result of an and operation if we know

2005-04-10 23:37:16 +00:00

AsmPrinter.cpp

add support for prefix/suffix strings to go around GlobalValue(s)

2005-04-02 12:21:51 +00:00

BranchFolding.cpp

Changes For Bug 352

2004-09-01 22:55:40 +00:00

IntrinsicLowering.cpp

First step in adding pcmarker intrinsic. Second step (soon) is adding backend support.

2005-03-28 20:05:49 +00:00

LiveInterval.cpp

Prevent accessing past the end of the intervals vector, this fixes

2004-12-04 01:22:09 +00:00

LiveInterval.h

Fix typeo

2004-11-18 04:31:10 +00:00

LiveIntervalAnalysis.cpp

there is no need to remove this instruction, linscan does it already as it

2005-04-09 16:24:20 +00:00

LiveIntervalAnalysis.h

Allow the live interval analysis pass to be a bit more aggressive about

2005-03-09 23:05:19 +00:00

LiveVariables.cpp

Consider the livein/out set for a function, allowing targets to not have to

2005-04-09 15:23:25 +00:00

MachineBasicBlock.cpp

print the machine CFG in the -print-machineinstrs dump

2005-04-01 06:48:38 +00:00

MachineCodeEmitter.cpp

Fix the FIXME, nuke the JIT specific forceCompilationOf method.

2004-11-22 21:54:35 +00:00

MachineFunction.cpp

Improve conformance with the Misha spelling benchmark suite

2005-01-30 00:09:23 +00:00

MachineInstr.cpp

Allow machine operands to represent global variables with offsets. This is

2004-10-15 04:38:41 +00:00

Makefile

Change Library Names Not To Conflict With Others When Installed

2004-10-27 23:18:45 +00:00

Passes.cpp

Changes For Bug 352

2004-09-01 22:55:40 +00:00

PHIElimination.cpp

Changes For Bug 352

2004-09-01 22:55:40 +00:00

PhysRegTracker.h

Improved PhysRegTracker interface. RegAlloc lazily allocates the register tracker using a std::auto_ptr

2004-02-23 06:10:13 +00:00

PrologEpilogInserter.cpp

Simplify/speedup the PEI by not having to scan for uses of the callee saved

2005-01-23 23:13:12 +00:00

RegAllocIterativeScan.cpp

Update these register allocators to set the PhysRegUsed info in MachineFunction.

2005-01-23 22:45:13 +00:00

RegAllocLinearScan.cpp

Update these register allocators to set the PhysRegUsed info in MachineFunction.

2005-01-23 22:45:13 +00:00

RegAllocLocal.cpp

Update this pass to set PhysRegsUsed info in MachineFunction.

2005-01-23 22:51:56 +00:00

RegAllocSimple.cpp

Update physregsused info.

2005-01-23 22:55:45 +00:00

TwoAddressInstructionPass.cpp

Use the TargetInstrInfo::commuteInstruction method to commute instructions

2005-01-19 07:08:42 +00:00

UnreachableBlockElim.cpp

Fix the missing symbols problem Bill was hitting. Patch contributed by

2005-03-17 15:38:16 +00:00

VirtRegMap.cpp

Make sure to notice that explicit physregs are used in the function

2005-04-04 21:35:34 +00:00

VirtRegMap.h

When a virtual register is folded into an instruction, keep track of whether

2004-10-01 23:15:36 +00:00