On 11/06/2018 04:38 AM, Alexandre Oliva wrote:
Just like CONST_INT, CONST_WIDE_INT is VOIDmode, so LRA might be
tempted to build a SUBREG to "convert" it to the wanted mode. That's
no use. Test for CONST_SCALAR_INT_P instead of CONST_INT_P so that we
skip the subreg creation for both.
Regstrapped on x86_64- and i686-linux-gnu. Ok to install?
Yes. Thank you, Alex.
for gcc/ChangeLog
PR rtl-optimization/87874
* lra.c (lra_substitute_pseudo): Do not create a subreg for
const wide ints.
for gcc/testsuite/ChangeLog
PR rtl-optimization/87874
* gcc.dg/pr87874.c: New.
