[Mesa-dev] [Bug 89759] WebGL OGL ES GLSL conformance test with mesa drivers fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89759

--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
FTR, the issue is that before the copy prop we have

DCL TEMP[1..4], ARRAY(1), LOCAL
DCL TEMP[5..8], ARRAY(2), LOCAL
DCL TEMP[9..12], ARRAY(3), LOCAL
DCL TEMP[13..16], ARRAY(4), LOCAL
DCL TEMP[17..20], ARRAY(5), LOCAL
DCL TEMP[21..24], ARRAY(6), LOCAL
DCL TEMP[25..26], LOCAL

 28: MOV TEMP[25].x, TEMP[14].xxxx
 30: ADD TEMP[14].x, TEMP[14].xxxx, IMM[0].yyyy
 46: FSEQ TEMP[26].x, TEMP[25].xxxx, IMM[0].yyyy

And the copy propagation pass decides to copy-prop TEMP[14] into TEMP[25] on
line 46. This ends poorly. Perhaps because file == PROGRAM_ARRAY isn't properly
supported by the pass? Not sure. Sent a patch to just remove.

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