search for: reg16508

...s it is believed it is not a local live-range. SimpleRegisterCoalescing: This ends up as overlapping live-ranges, where the value numbers did not become one, and Interference is reported. This must then be considered bad code in LLVM. But if I write %reg16507<def> = COPY %reg16445; %reg16508<def> = COPY %reg16468; %reg16506<def> = REG_SEQUENCE %reg16507, hi16, %reg16508, lo16; %reg16509<def> = st_2_1_postMod %reg16506, %reg16441, %reg16454, pred:20, pred:%CCReg; then, there is not an erroneous live-range that interferes, so it coalesces. I suppose this means t...

On May 19, 2011, at 7:47 AM, Jonas Paulsson wrote: > Hi, > > I am combining 16-bit registers to a 32 bit register in order to make a wide store, as per below: > > 732 %reg16506:hi16<def,dead> = COPY %reg16445<kill>; > 740 %reg16506:lo16<def> = COPY %reg16468<kill>; > 748 %r3<def,dead> = store %reg16506<kill>, %r3, > > As you can

Hi, I am combining 16-bit registers to a 32 bit register in order to make a wide store, as per below: 732 %reg16506:hi16<def,dead> = COPY %reg16445<kill>; 740 %reg16506:lo16<def> = COPY %reg16468<kill>; 748 %r3<def,dead> = store %reg16506<kill>, %r3, As you can see, LiveVariables has marked the high part dead, even though the super-register is used at