Divergent LOD test

gistfile1.txt

SIMD8 shader: 26 instructions. 0 loops. 572 cycles. 0:0 spills:fills. scheduled with mode top-down. Promoted 0 constants. Compacted 416 to 336 bytes (19%)
   START B0 (352 cycles)
add(16)         g4<1>UW         g1.4<1,4,0>UW   0x11001010V     { align1 WE_all 1H };
pln(8)          g9<1>F          g6<0,1,0>F      g2<8,8,1>F      { align1 1Q compacted };
pln(8)          g10<1>F         g6.4<0,1,0>F    g2<8,8,1>F      { align1 1Q compacted };
mov(8)          g2<1>F          g4<8,4,1>UW                     { align1 1Q };
mov(8)          g3<1>F          g4.4<8,4,1>UW                   { align1 1Q };
add(8)          g2<1>F          g2<8,8,1>F      0x3f000000F  /* 0.5F */ { align1 1Q };
add(8)          g3<1>F          g3<8,8,1>F      0x3f000000F  /* 0.5F */ { align1 1Q };
mov(8)          g4<1>D          g2<8,8,1>F                      { align1 1Q compacted };
mov(8)          g5<1>D          g3<8,8,1>F                      { align1 1Q compacted };
shl(8)          g6<1>D          g5<8,8,1>D      0x00000001UD    { align1 1Q };
add(8)          g7<1>D          g4<8,8,1>D      g6<8,8,1>D      { align1 1Q compacted };
shl(8)          g8<1>D          g7<8,8,1>D      0x00000004UD    { align1 1Q };
add(8)          g2<1>UD         g8<8,8,1>UD     0x00000000UD    { align1 1Q compacted };
send(8)         g2<1>UW         g2<8,8,1>UD     0x02427002
                            sampler MsgDesc: ld SIMD8 Surface = 2 Sampler = 0 mlen 1 rlen 4 { align1 1Q };
cmp.g.f0.0(8)   null<1>F        g2<8,8,1>F      0x0F  /* 0F */  { align1 1Q compacted };
(+f0.0) if(8)   JIP: 72         UIP: 112                        { align1 1Q };
   END B0 ->B1 ->B2
   START B1 <-B0 (208 cycles)
send(8)         g124<1>UW       g9<8,8,1>UD     0x04320003
                            sampler MsgDesc: sample SIMD8 Surface = 3 Sampler = 0 mlen 2 rlen 3 { align1 1Q };
send(8)         g2<1>UW         g9<8,8,1>UD     0x04229003
                            sampler MsgDesc: lod SIMD8 Surface = 3 Sampler = 0 mlen 2 rlen 2 { align1 1Q };
mov(8)          g127<1>UD       g3<8,8,1>UD                     { align1 1Q compacted };
else(8)         JIP: 56         UIP: 56                         { align1 1Q };
   END B1 ->B3
   START B2 <-B0 (8 cycles)
mov(8)          g126<1>UD       0x00000000UD                    { align1 1Q compacted };
mov(8)          g125<1>UD       0x00000000UD                    { align1 1Q compacted };
mov(8)          g124<1>UD       0x00000000UD                    { align1 1Q compacted };
mov(8)          g127<1>UD       0xc1200000UD                    { align1 1Q };
   END B2 ->B3
   START B3 <-B2 <-B1 (4 cycles)
endif(8)        JIP: 16                                         { align1 1Q };
sendc(8)        null<1>UW       g124<0,1,0>F    0x88031400
                            render MsgDesc: RT write SIMD8 LastRT Surface = 0 mlen 4 rlen 0 { align1 1Q EOT };
   END B3