[Bug 79649] New: [PATCH RFC] r300/compiler: recursive look for RC_OPCODE_S**

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=79649

          Priority: medium
            Bug ID: 79649
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [PATCH RFC] r300/compiler: recursive look for
                    RC_OPCODE_S**
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: david.heidelberger@ixit.cz
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r300
           Product: Mesa

Created attachment 100416
  --> https://bugs.freedesktop.org/attachment.cgi?id=100416&action=edit
0001-r300-compiler-recursive-look-for-RC_OPCODE_S.patch

Get rid of error "Failed to build loop info" by fixing failure in cases
like
4:   SGE temp[2].x, temp[0].xxxx, const[0].wwww;
5:   CMP temp[1].x, -temp[2].xxxx, const[0].zzzz, temp[1].xxxx;
6:   IF temp[1].xxxx;

On RS690
 - fixes piglit glean "do-loop with continue and break"
 - changes error from Failed to build loop info ->
   Not a native swizzle: 00000e89
   r300_fragprog_emit.c::begin_tex(): Too many texture indirections
   for "discard statement in for loop"
 - hide Failed to build loop info for
   "precision log2", "while-loop with continue",
   "for-loop with continue" and return "1 1 1 1" insted of "0 0 0 1"

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