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4005d5
2014 Oct 13
2
[LLVMdev] Unexpected spilling of vector register during lane extraction on some x86_64 targets
...NG_ENSUES=0 /* no spilling */
$ objdump -dC --no-show-raw-insn ./a.out
...
00000000004005c0 <main>:
4005c0: movdqa 0x1a58(%rip),%xmm0 # 402020 <x>
4005c8: psrld $0x17,%xmm0
4005cd: paddd 0x12b(%rip),%xmm0 # 400700 <.LCPI0_0>
4005d5: cvtdq2ps %xmm0,%xmm1
4005d8: divps 0x131(%rip),%xmm1 # 400710 <.LCPI0_1>
4005df: cvttps2dq %xmm1,%xmm1
4005e3: pmullw 0x135(%rip),%xmm1 # 400720 <.LCPI0_2>
4005eb: psubd %xmm1,%xmm0
4005ef: movq %xmm0,%rax
4005f4: movslq %eax,%rcx
4005f7: sar $0x20,%rax
4005fb: punpckhqdq %xmm0,%...