[Bug tree-optimization/19126] Missed IV optimization (redundant instruction in loop)

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-01-23 16:03 -------
I get different asm for AMD64 as well: 
 
.L4:                                  | .L11: 
        movslq  %r10d,%rax                      movslq  %r10d,%rax 
        movslq  %r11d,%rdx                      movslq  %r11d,%rdx 
        incl    %r9d                            incl    %r9d 
        leaq    (%rcx,%rax,4), %rax   |         leaq    (%rsi,%rax), %rax 
        movss   (%rbx,%rdx,4), %xmm0  |         movss   (%rbx,%rdx), %xmm0 
        addl    %esi, %r11d           |         addl    %ecx, %r11d 
        addl    %r8d, %r10d                     addl    %r8d, %r10d 
        cmpl    %r9d, %edi                      cmpl    %r9d, %edi 
        addss   (%rax), %xmm0                   addss   (%rax), %xmm0 
        movss   %xmm0, (%rax)                   movss   %xmm0, (%rax) 
        jg      .L4                   |         jg      .L11 
 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19126