http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59535
--- Comment #15 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Another testcase where the thumb1 code is poor is
gcc.c-torture/execute/pr28982b.c
With LRA we often get sequences such as:
mov r3, sp
ldr r2, .L8+16
add r3, r3, r2 // r2 dead.
str r0, [r3]
Instead of:
ldr r2, .L8+16
add r2, r2, sp
str r0, [r2]
Which is both shorter and needs fewer registers.
