search for: movzx32rm16

...g16390. Furthermore, how should I handle this case. 1: # Machine code for function test5: Frame Objects: fi#-2: size=2, align=4, fixed, at location [SP+8] fi#-1: size=2, align=8, fixed, at location [SP+4] Function Live Outs: %AX BB#0: derived from LLVM BB %entry %reg16390<def> = MOVZX32rm16 <fi#-2>, 1, %reg0, 0, %reg0; mem:LD2[FixedStack-2] GR32:%reg16390 %reg16385<def> = COPY %reg16390:sub_16bit<kill>; GR16:%reg16385 GR32:%reg16390 %reg16391<def> = MOVZX32rm16 <fi#-1>, 1, %reg0, 0, %reg0; mem:LD2[FixedStack-1] GR32:%reg16391 %reg1...

...hat mechanics in LLVM will tell me that I cannot make this move during register allocation, or how can I tell from (1) that I cannot execute %reg16385<def> = COPY %reg16390. Furthermore, how should I handle this case. > BB#0: derived from LLVM BB %entry > %reg16390<def> = MOVZX32rm16 <fi#-2>, 1, %reg0, 0, %reg0; mem:LD2[FixedStack-2] GR32:%reg16390 > %reg16385<def> = COPY %reg16390:sub_16bit<kill>; GR16:%reg16385 GR32:%reg16390 > %reg16391<def> = MOVZX32rm16 <fi#-1>, 1, %reg0, 0, %reg0; mem:LD2[FixedStack-1] GR32:%reg16391 &gt...