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vcvtdq2pd
2014 Oct 13
2
[LLVMdev] Unexpected spilling of vector register during lane extraction on some x86_64 targets
...S=0 /* no spilling */
$ objdump -dC --no-show-raw-insn ./a.out
...
00000000004004f0 <main>:
4004f0: vmovdqa 0x2004c8(%rip),%xmm0 # 6009c0 <x>
4004f8: vpsrld $0x17,%xmm0,%xmm0
4004fd: vpaddd 0x17b(%rip),%xmm0,%xmm0 # 400680
<__dso_handle+0x8>
400505: vcvtdq2ps %xmm0,%xmm1
400509: vdivps 0x17f(%rip),%xmm1,%xmm1 # 400690
<__dso_handle+0x18>
400511: vcvttps2dq %xmm1,%xmm1
400515: vpmullw 0x183(%rip),%xmm1,%xmm1 # 4006a0
<__dso_handle+0x28>
40051d: vpsubd %xmm1,%xmm0,%xmm0
400521: vmovq %xmm0,%rax
400526: mo...