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a358c1db5c
this: %ESI<def> = MOV32rr %EDI<kill> ADJCALLSTACKDOWN64 0, %RSP<imp-def>, %EFLAGS<imp-def,dead>, %RSP<imp-use> %reg1027<def> = MOVZX64rr32 %ESI %reg1027<def> = ADD64ri8 %reg1027, 15, %EFLAGS<imp-def,dead> %reg1027<def> = AND64ri8 %reg1027, -16, %EFLAGS<imp-def,dead> %RDI<def> = MOV64rr %RSP %RDI<def> = SUB64rr %RDI, %reg1027<kill>, %EFLAGS<imp-def,dead> %RSP<def> = MOV64rr %RDI into this: 4 %reg1024<def> = MOV32rr %EDI<kill> 12 ADJCALLSTACKDOWN64 0, %RSP<imp-def>, %EFLAGS<imp-def,dead>, %RSP<imp-use> 20 %reg1025<def> = MOVZX64rr32 %reg1024 28 %reg1026<def> = MOV64rr %reg1025<kill> 36 %reg1026<def> = ADD64ri8 %reg1026, 15, %EFLAGS<imp-def,dead> 44 %reg1027<def> = MOV64rr %reg1026<kill> 52 %reg1027<def> = AND64ri8 %reg1027, -16, %EFLAGS<imp-def,dead> 60 %reg1028<def> = MOV64rr %RSP 68 %reg1029<def> = MOV64rr %reg1028<kill> 76 %reg1029<def> = SUB64rr %reg1029, %reg1027<kill>, %EFLAGS<imp-def,dead> 84 %RSP<def> = MOV64rr %reg1029 This helps greatly when debugging register allocation and coalescing problems. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76615 91177308-0d34-0410-b5e6-96231b3b80d8
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