https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104511
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Richard Biener <[email protected]>: https://gcc.gnu.org/g:2cd7683cdbccf5d3fce58aa279e77c8baa48e4bd commit r10-10500-g2cd7683cdbccf5d3fce58aa279e77c8baa48e4bd Author: Richard Biener <[email protected]> Date: Mon Feb 14 10:09:10 2022 +0100 tree-optimization/104511 - avoid FP to DFP conversion for VEC_PACK_TRUNC This avoids forwprop from matching DFP <-> FP vector conversions using VEC_[UN]PACK{_TRUNC,_LO,_HI}. Maybe DFP vectors shouldn't be a thing, but they appearantly are. Re-using CONVERT/NOP_EXPR for DFP <-> FP conversions was probably a mistake. 2022-02-14 Richard Biener <[email protected]> PR tree-optimization/104511 * tree-ssa-forwprop.c (simplify_vector_constructor): Avoid touching DFP <-> FP conversions. * gcc.dg/pr104511.c: New testcase. (cherry picked from commit f320197c8b495324dc6997a99d53e7f45ecf5840)
