On Tue, Sep 10, 2013 at 5:53 PM, Yufeng Zhang <yufeng.zh...@arm.com> wrote: > Hi, > > Following Bin's patch in > http://gcc.gnu.org/ml/gcc-patches/2013-09/msg00695.html, this patch tweaks > backtrace_base_for_ref () to strip of any widening conversion after the > first TREE_CODE check fails. Without this patch, the test > (gcc.dg/tree-ssa/slsr-39.c) in Bin's patch will fail on AArch64, as > backtrace_base_for_ref () will stop if not seeing an ssa_name since the tree > code can be nop_expr instead. > > Regtested on arm and aarch64; still bootstrapping x86_64. > > OK for the trunk if the x86_64 bootstrap succeeds?
Please add a testcase. Richard. > Thanks, > Yufeng > > gcc/ > > * gimple-ssa-strength-reduction.c (backtrace_base_for_ref): Call > get_unwidened and check 'base_in' again.
