On Sat, Mar 1, 2014 at 11:23 PM, Paulo J. Matos <pa...@matos-sorge.com> wrote:
>
> This patch fixes lto/55113 for powerpc.
> Combining -fshort-double with -flto is now working fine.
>
> I attach patch and testcase (unsure if testcase is in the right place).
> Tested with target powerpc-abispe.
>
>
> 2014-03-01 Paulo Matos <pa...@matos-sorge.com>
>
> * c-family/c.opt: Add LTO FE support for fshort-double option.
> * tree-streamer.c (record_common_node): Assert we don't record
> nodes with type double.
> (preload_common_node): Skip type double, complex double and
> double pointer since it is now frontend dependent due to
> fshort-double option.
>
> 2014-03-01 Paulo Matos <pa...@matos-sorge.com>
>
> * gcc.target/powerpc/pr55113.c: New testcase.
>
>
> OK to commit?
Index: gcc/c-family/c.opt
===================================================================
--- gcc/c-family/c.opt (revision 208249)
+++ gcc/c-family/c.opt (working copy)
@@ -1141,7 +1141,7 @@ C++ ObjC++ Optimization Var(flag_rtti) I
Generate run time type descriptor information
fshort-double
-C ObjC C++ ObjC++ Optimization Var(flag_short_double)
+C ObjC C++ ObjC++ LTO Optimization Var(flag_short_double)
Use the same size for double as for float
This hunk isn't needed.
Index: gcc/testsuite/gcc.target/powerpc/pr55113.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/pr55113.c (revision 0)
+++ gcc/testsuite/gcc.target/powerpc/pr55113.c (working copy)
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int main()
+{
+ static float f;
+ float a = 1.0;
+ float b = 2.0;
+ f = a + b * 1e-12;
+ printf("%f\n", f);
+ return 0;
+}
that doesn't seem to be run with -flto nor -fshort-double. The proper
place for a testcase is gcc.dg/lto/ with sth like
{ dg-lto-do link }
{ dg-lto-options { { -O2 -fshort-double -flto } } }
and naming the testcase pr55113_0.c. Your testcase doens't use
doubles at all ... (well, ok, a + b * 1e-12 uses them implicitely, but
for that we have fsingle-precision-constant)
Richard.
> --
> PMatos
