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H.J. Lu wrote:Agreed. jeffWhen I add SSE_FIRST_REG/xmm0 to CLASS_LIKELY_SPILLED_P, all testcases compile. However, xmm0 is used for FP return for x86-64, I don't know the performance impact of this change. xmm0 is a fixed register only for a handful SSE4 insns, which can only be generated from intrinsics. Should we really go down this route?
Yes, that is the correct fix. As for being a return register, it should be no worse than for eax, which is also likely-spilled.
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