search for: reg1024d

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2009 Apr 22
2
[LLVMdev] Def/Kill flags for subregisters
...me trouble understanding the semantics of def/kill flags on machine operands when using subregisters. I compile this function: define void @i56_ls(i56 %x) nounwind { store i56 %x, i56* @i56_s ret void } And get this initial machine code: Live Ins: %R0 %R1 %reg1025D<def> = MOVE %R1 %reg1024D<def> = MOVE %R0 %reg1026D<def> = MOVE %reg1025D %reg1027P<def> = LOAD32imm <ga:i56_s> %reg1028D<def> = SRLd %reg1025D, 16 %reg1029D16L<def> = EXTRACT_SUBREG %reg1026D, 1 %reg1030P<def> = ADDimm7 %reg1027P, 4 STORE16pi %reg1029D16L, %reg1030P, Mem:ST(2...
2009 Apr 22
0
[LLVMdev] Def/Kill flags for subregisters
...machine operands when using subregisters. > > I compile this function: > > define void @i56_ls(i56 %x) nounwind { > store i56 %x, i56* @i56_s > ret void > } > > And get this initial machine code: > > Live Ins: %R0 %R1 > %reg1025D<def> = MOVE %R1 > %reg1024D<def> = MOVE %R0 > %reg1026D<def> = MOVE %reg1025D > %reg1027P<def> = LOAD32imm <ga:i56_s> > %reg1028D<def> = SRLd %reg1025D, 16 > %reg1029D16L<def> = EXTRACT_SUBREG %reg1026D, 1 > %reg1030P<def> = ADDimm7 %reg1027P, 4 > STORE16pi %re...