Ping... see https://gcc.gnu.org/ml/gcc-patches/2016-05/msg02010.html
Thanks Bernd. On 05/25/16 14:58, Bernd Edlinger wrote: > Hi! > > This restricts the X constraint in asm statements, which > can be easily folded by combine in something completely > invalid. > > It is necessary to allow scratch here, because on i386 > the md_asm_adjust hook inserts them. > > The second test case fails because lra does not > allow all register for anything_ok operands (aka X) > and later it fails to match the two X constraints > in case '0': if (curr_alt[m] == NO_REGS) break. > > There is also an identical bug in the reload pass, > but I do not know how to fix that, as it is almost > used nowhere today. > > > Boot-strapped and regression-tested on x86_64-pc-linux-gnu. > OK for trunk? > > > Thanks > Bernd. >
