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Date: Fri, 16 Jan 2009 21:06:00 -0000
Subject: [Bug tree-optimization/38885]  New: missed FRE with BIT_FIELD_REF and vectors
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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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Another one like PR 38884 and 38865.
Simple testcase:
#define vector __attribute__((vector_size(16) ))

vector float global_res;
float x;
int main(int argc)
{
    vector float res = (vector float)(0.0f,0.0f,0.0f,1.0f);
    res += (vector float)(0.0f,0.0f,0.0f,1.0f);
    global_res = res;
    x = *(float*)(&global_res);
    return 0;
}


-- 
           Summary: missed FRE with BIT_FIELD_REF and vectors
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38885