Re: [PATCH][Backport][GCC10] Fix SSA corruption due to widening_mul opt on conflict across an abnormal edge [PR111407]

On Apr 2, 2024, at 03:06, Richard Biener wrote: On Mon, Apr 1, 2024 at 3:36 PM Qing Zhao mailto:qing.z...@oracle.com>> wrote: This is a bug in tree-ssa-math-opts.c, when applying the widening mul optimization, the compiler needs to check whether the operand is in a ABNORMAL PHI, if YES, we sh

Re: [PATCH][Backport][GCC10] Fix SSA corruption due to widening_mul opt on conflict across an abnormal edge [PR111407]

On Mon, Apr 1, 2024 at 3:36 PM Qing Zhao wrote: > > This is a bug in tree-ssa-math-opts.c, when applying the widening mul > optimization, the compiler needs to check whether the operand is in a > ABNORMAL PHI, if YES, we should avoid the transformation. > > PR tree-optimization/111407 > >

[PATCH][Backport][GCC10] Fix SSA corruption due to widening_mul opt on conflict across an abnormal edge [PR111407]

This is a bug in tree-ssa-math-opts.c, when applying the widening mul optimization, the compiler needs to check whether the operand is in a ABNORMAL PHI, if YES, we should avoid the transformation. PR tree-optimization/111407 gcc/ChangeLog: * tree-ssa-math-opts.c (convert_mult_to