[Bug middle-end/71078] x/abs(x) -> sign(1.0,x)

["thopre01 at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71078

Thomas Preud'homme <thopre01 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #13 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to prathamesh3492 from comment #11)
> (In reply to Thomas Preud'homme from comment #10)
> > Hi,
> > 
> > The following tests are still failing for me on arm-none-eabi targets:
> > 
> > FAIL: gcc.dg/tree-ssa/pr71078-1.c scan-tree-dump forwprop1
> > "__builtin_copysignf"
> > FAIL: gcc.dg/tree-ssa/pr71078-1-double.c scan-tree-dump forwprop1
> > "__builtin_copysign"
> > FAIL: gcc.dg/tree-ssa/pr71078-2.c scan-tree-dump forwprop1
> > "__builtin_copysignf"
> > FAIL: gcc.dg/tree-ssa/pr71078-2-double.c scan-tree-dump forwprop1
> > "__builtin_copysign"
> > FAIL: gcc.dg/tree-ssa/pr71078-3.c scan-tree-dump forwprop1
> > "__builtin_copysign"
> > 
> > 
> > My investigation for pr71078-1.c led me to the first if block in
> > gimple_fold_stmt_to_constant_1. if gimple_simplify returns true as it does
> > when matching the x / abs(x) -> copysign (1.0, x) match.pd pattern. However
> > gimple_simplified_result_is_gimple_val is false because copysign is a
> > builtin and mprts_hook is NULL at this point.
> > 
> > The switch that follows goes in GIMPLE_BINARY_RHS case to return NULL_TREE
> > because it does not recognize an operation it knows about.
> > 
> > I suspect the same happens for the other testcases.
> Hi,
> I committed r239255, which restricts the test-cases to c99_runtime
> because they were failing on bare-metal arm and aarch64 targets,
> The commit worked for me.
> Could you please try with r239255 ?

Sorry for the fuss, it is indeed fixed. The build was from few hours before.

Thanks!

Best regards.