search for: visitsext

...4 %L_tid, 32 %idxprom = ashr exact i64 %sext, 32 Sext(trunk()) remains nice until code gen and one asm instruction of the sort "move %eax, %rax" is generated, as I want (see asm sample at the end of this message). I implemented this locally in InstCombineCasts.cpp, in InstCombiner::visitSExt(). The code looks for the specific pattern of sext32to64(trunk64to32()) and doesn't let it become ashr(shl()). Another way that I can think of, is to keep ashr32(shl32()) together and then it's possible to replace both instructions with one asm instruction (a la "move %eax, %rax&quot...