[Bug target/52684] [4.7 regression] glibc long double math tests fail on sparc 64-bit

[davem at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52684

--- Comment #6 from davem at gcc dot gnu.org 2012-05-02 07:01:24 UTC ---
Created attachment 27283
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27283
Simplest test case.  Build with -O1 -ffloat-store -m64 on sparc

This is the most simplest test case which generates a long double soft-fp
libcall on sparc64, and DSE erroneously eliminates the stores that setup the
arguments.