[Bug target/26505] New: Storing float to int into two different pointers requires stack space

[pinskia at gcc dot gnu dot org]

Testcase (modified from testcase which Chris Latter was looking at):
void foo(float a, int *b) { b[0] = b[1] = a; }
----
Currently we get:
        fctiwz f0,f1
        addi r2,r1,-24
        stfiwx f0,0,r2
        lwz r0,-24(r1)
        stw r0,0(r4)
        stw r0,4(r4)

------
We should be able to get:
fctiwz f0,f1
stfiwx f0,0,r4
li r2, 4
stfiwx f0,r2,r4
---- or -----
fctiwz f0,f1
stfiwx f0,0,r4
addi r4, r4, 4
stfiwx f0,0,r4
Depending on a lot of stuff
I don't know how much this shows up in real code.


-- 
           Summary: Storing float to int into two different pointers
                    requires stack space
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
GCC target triplet: powerpc-darwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26505