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authorMatt Turner <[email protected]>2016-05-02 23:32:13 -0700
committerMatt Turner <[email protected]>2016-05-05 10:18:28 -0700
commitf01d92f4734a7ca62926dceda1d004c0cb10548c (patch)
treef5c3ac8ddaccf61de72f36a227ad60a22bb77c8c /Makefile.am
parent9d86a5eea79ac30bb90af363c66a5ba8529b37d8 (diff)
i965/fs: Don't follow pow with an instruction with two dest regs.
Beginning with commit 7b208a73, Unigine Valley began hanging the GPU on Gen >= 8 platforms. Evidently that commit allowed the scheduler to make different choices that somehow finally ran afoul of a hardware bug in which POW and FDIV instructions may not be followed by an instruction with two destination registers (including compressed instructions). I presume the conditions are more complex than that, but the internal hardware bug report (BDWGFX bug_de 1696294) does not contain much more information. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94924 Reviewed-by: Topi Pohjolainen <[email protected]> [v1] Tested-by: Mark Janes <[email protected]> [v1] Reviewed-by: Francisco Jerez <[email protected]>
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